Opinions from F. H. Knowlton 1919
- 'Abies belongs to Abietineae'
- 'Abies linkii belongs to Abies' according to Roemer 1839
- 'Abies linkii is recombined as Abietites linkii' according to Dunker 1846
- 'Abies linkii is recombined as Abietites linkii'
- 'Abies mariana belongs to Abies' according to Miller 1768
- 'Abies mariana is recombined as Picea mariana' according to Britton 1888
- 'Abies mariana is recombined as Picea mariana'
- 'Abies setigera belongs to Abies' according to Lesquereux 1872
- 'Abies setigera is recombined as Abietites setiger' according to Lesquereux 1878
- 'Abies setigera is recombined as Abietites setiger'
- 'Abietineae was reranked as a subfamily and belongs to Pinaceae'
- 'Abietites belongs to Abietineae'
- 'Abietites angusticarpus belongs to Abietites' according to Fontaine 1890
- 'Abietites angusticarpus is a subjective synonym of Abietites macrocarpus'
- 'Abietites cretacea belongs to Abietites' according to Newberry 1898
- 'Abietites cretacea belongs to Abietites'
- 'Abietites dubius belongs to Abietites' according to Lesquereux 1868
- 'Abietites dubius belongs to Abietites'
- 'Abietites ellipticus belongs to Abietites' according to Fontaine 1890
- 'Abietites ellipticus is a subjective synonym of Abietites macrocarpus'
- 'Abietites ernestinae belongs to Abietites' according to Lesquereux 1874
- 'Abietites ernestinae belongs to Abietites'
- 'Abietites macrocarpus belongs to Abietites' according to Fontaine 1890
- 'Abietites macrocarpus belongs to Abietites'
- 'Abietites marylandicus belongs to Abietites' according to Fontaine 1905
- 'Abietites marylandicus belongs to Abietites'
- 'Abietites tyrrellii belongs to Abietites'
- 'Abietites tyrrellii belongs to Abietites' according to Dawson 1885
- 'Acacia belongs to Mimosaceae'
- 'Acacia lamarensis belongs to Acacia'
- 'Acacia macrosperma belongs to Acacia'
- 'Acacia oregoniana belongs to Acacia' according to Lesquereux 1888
- 'Acacia oregoniana belongs to Acacia'
- 'Acacia septentrionalis belongs to Acacia' according to Lesquereux 1873
- 'Acacia septentrionalis belongs to Acacia'
- 'Acacia wardii belongs to Acacia'
- 'Acacia wilcoxensis belongs to Acacia' according to Berry 1916
- 'Acacia wilcoxensis belongs to Acacia'
- 'Acaciaephyllum belongs to Mimosaceae'
- 'Acaciaephyllum ellipticum belongs to Acaciaephyllum' according to Fontaine 1905
- 'Acaciaephyllum ellipticum belongs to Acaciaephyllum'
- 'Acaciaephyllum longifolium is a subjective synonym of Thinnfeldia granulata'
- 'Acaciaephyllum microphyllum belongs to Acaciaephyllum' according to Fontaine 1889
- 'Acaciaephyllum microphyllum is a subjective synonym of Thinnfeldia granulata'
- 'Acaciaephyllum pachyphyllum belongs to Acaciaephyllum' according to Fontaine 1905
- 'Acaciaephyllum pachyphyllum belongs to Acaciaephyllum'
- 'Acaciaephyllum spatulatum belongs to Acaciaephyllum' according to Fontaine 1889
- 'Acaciaephyllum spatulatum is a subjective synonym of Thinnfeldia granulata'
- 'Acaciaephyllum variabile belongs to Acaciaephyllum' according to Fontaine 1889
- 'Acaciaephyllum variabile is a subjective synonym of Thinnfeldia granulata'
- 'Acaciaphyllites belongs to Mimosaceae'
- 'Acaciaphyllites grevilleoides belongs to Acaciaphyllites'
- 'Acalypha belongs to Euphorbiaceae'
- 'Acalypha myricina belongs to Acalypha'
- 'Acalypha myricina belongs to Acalypha' according to Cockerell 1909
- 'Acer belongs to Aceraceae'
- 'Acer aequidentatum belongs to Acer'
- 'Acer amboyense belongs to Acer' according to Newberry 1895
- 'Acer amboyense belongs to Acer'
- 'Acer arcticum belongs to Acer' according to Heer 1877
- 'Acer arcticum belongs to Acer'
- 'Acer bendirei belongs to Acer' according to Lesquereux 1888
- 'Acer bendirei belongs to Acer'
- 'Acer bolanderi belongs to Acer'
- 'Acer dimorphum belongs to Acer' according to Lesquereux 1888
- 'Acer dimorphum belongs to Acer'
- 'Acer dubium belongs to Acer' according to Penhallow 1902
- 'Acer dubium belongs to Acer'
- 'Acer florigerum belongs to Acer' according to Cockerell 1908
- 'Acer florigerum belongs to Acer'
- 'Acer florissanti belongs to Acer'
- 'Acer florissanti belongs to Acer' according to Kirchner 1898
- 'Acer fragilis belongs to Acer' according to Knowlton 1917
- 'Acer fragilis belongs to Acer'
- 'Acer gigas belongs to Acer' according to Knowlton 1902
- 'Acer gigas belongs to Acer'
- 'Acer gracilescens belongs to Acer' according to Lesquereux 1883
- 'Acer gracilescens belongs to Acer'
- 'Acer grahamensis belongs to Acer' according to Knowlton and Cockerell 1919
- 'Acer grossedentatum belongs to Acer' according to Heer 1859
- 'Acer grossedentatum belongs to Acer'
- 'Acer indivisum belongs to Acer' according to Lesquereux 1883
- 'Acer indivisum is a subjective synonym of Acer lesquereuxii'
- 'Acer kirchnerianum belongs to Acer' according to Knowlton 1916
- 'Acer kirchnerianum belongs to Acer'
- 'Acer lesquereuxii belongs to Acer'
- 'Acer lesquereuxii belongs to Acer' according to Knowlton 1898
- 'Acer macropterum belongs to Acer' according to Heer 1868
- 'Acer macropterum belongs to Acer' according to Visiani 1860
- 'Acer macropterum is replaced by Acer grahamensis'
- 'Acer medianum belongs to Acer' according to Knowlton 1902
- 'Acer medianum belongs to Acer'
- 'Acer merriami belongs to Acer' according to Knowlton 1902
- 'Acer merriami belongs to Acer'
- 'Acer minor belongs to Acer' according to Knowlton 1902
- 'Acer minor belongs to Acer'
- 'Acer minutum belongs to Acer' according to Hollick 1892
- 'Acer minutum belongs to Acer'
- 'Acer mysticum belongs to Acer' according to Kirchner 1898
- 'Acer mysticum belongs to Acer'
- 'Acer oregonianum belongs to Acer' according to Knowlton 1902
- 'Acer oregonianum belongs to Acer'
- 'Acer osmonti belongs to Acer'
- 'Acer osmonti belongs to Acer' according to Knowlton 1902
- 'Acer paucidentatum belongs to Acer' according to Hollick 1897
- 'Acer paucidentatum belongs to Acer'
- 'Acer perditum belongs to Acer' according to Cockerell 1908
- 'Acer perditum belongs to Acer'
- 'Acer pleistocenicum belongs to Acer' according to Penhallow 1890
- 'Acer pleistocenicum belongs to Acer'
- 'Acer pseudochrysophylla belongs to Acer' according to Lesquereux 1878
- 'Acer pseudochrysophylla belongs to Acer'
- 'Acer rubrum belongs to Acer'
- 'Acer saccharinum belongs to Acer'
- 'Acer saccharinum belongs to Acer' according to Wangenheim 1758
- 'Acer saccharinum is replaced by Acer saccharum'
- 'Acer saccharum belongs to Acer' according to Marshall 1785
- 'Acer saccharum belongs to Acer'
- 'Acer saskatchewense belongs to Acer'
- 'Acer saskatchewense belongs to Acer' according to Dawson 1885
- 'Acer secreta belongs to Acer' according to Lesquereux 1871
- 'Acer secreta belongs to Acer'
- 'Acer spicatum belongs to Acer' according to Lamarck 1786
- 'Acer spicatum belongs to Acer'
- 'Acer torontoniensis belongs to Acer' according to Penhallow 1907
- 'Acer torontoniensis belongs to Acer'
- 'Acer tricuspidatum belongs to Acer' according to Braun 1845
- 'Acer tricuspidatum is a subjective synonym of Acer trilobatum'
- 'Acer vitifolium belongs to Acer' according to Opiz 1829
- 'Acer vitifolium belongs to Acer' according to Braun 1845
- 'Acer vitifolium is replaced by Acer vitiphyllum'
- 'Acer vitiphyllum belongs to Acer' according to Knowlton and Cockerell 1919
- 'Acer vivarium belongs to Acer'
- 'Aceraceae belongs to Sapindales'
- 'Acerates belongs to Asclepiadaceae'
- 'Acerates amboyensis belongs to Acerates' according to Berry 1909
- 'Acerates amboyensis belongs to Acerates'
- 'Acerates fructifer belongs to Acerates' according to Cockerell 1908
- 'Acerates fructifer belongs to Acerates'
- 'Aceriphyllum is a subjective synonym of Araliaephyllum'
- 'Aceriphyllum aralioides is a subjective synonym of Araliaephyllum magnifolium'
- 'Acerites belongs to Aceraceae'
- 'Acerites multiformis belongs to Acerites' according to Lesquereux 1891
- 'Acerites multiformis belongs to Acerites'
- 'Acerites negundifolium belongs to Acerites' according to Dawson 1890
- 'Acerites negundifolium belongs to Acerites'
- 'Acerites pristinus belongs to Acerites' according to Newberry 1868
- 'Acerites pristinus is a subjective synonym of Liquidambar obtusilobatus'
- 'Acorites belongs to Plantae'
- 'Acorites menispermifolius is recombined as Menispermites menispermifolius' according to Knowlton 1898
- 'Acorites menispermifolius is recombined as Menispermites menispermifolius'
- 'Acorites menispermifolius belongs to Acorites' according to Lesquereux 1868
- 'Acorus belongs to Araceae'
- 'Acorus affinis belongs to Acorus' according to Lesquereux 1873
- 'Acorus affinis belongs to Acorus'
- 'Acorus brachystachys belongs to Acorus' according to Heer 1870
- 'Acorus brachystachys belongs to Acorus'
- 'Acorus calamus belongs to Acorus'
- 'Acrostichides is a subjective synonym of Acrostichites'
- 'Acrostichites belongs to Osmundaceae'
- 'Acrostichites brevipennis belongs to Acrostichites' according to Ward 1900
- 'Acrostichites brevipennis belongs to Acrostichites'
- 'Acrostichites coniopteroides belongs to Acrostichites' according to Ward 1900
- 'Acrostichites coniopteroides belongs to Acrostichites'
- 'Acrostichites densifolius belongs to Acrostichites' according to Fontaine 1883
- 'Acrostichites densifolius belongs to Acrostichites'
- 'Acrostichites fructifer belongs to Acrostichites' according to Ward 1900
- 'Acrostichites fructifer belongs to Acrostichites'
- 'Acrostichites microphyllus belongs to Acrostichites' according to Fontaine 1883
- 'Acrostichites microphyllus belongs to Acrostichites'
- 'Acrostichites oblongus belongs to Acrostichites' according to Emmons 1856
- 'Acrostichites oblongus is recombined as Lonchopteris oblonga' according to Fontaine 1883
- 'Acrostichites oblongus is recombined as Lonchopteris oblonga'
- 'Acrostichites rhombifolius belongs to Acrostichites' according to Fontaine 1883
- 'Acrostichites rhombifolius is a subjective synonym of Acrostichites tenuifolius'
- 'Acrostichopteris belongs to Schizaeaceae'
- 'Acrostichopteris cyclopteroides belongs to Acrostichopteris' according to Fontaine 1889
- 'Acrostichopteris cyclopteroides belongs to Acrostichopteris'
- 'Acrostichopteris densifolia belongs to Acrostichopteris' according to Fontaine 1889
- 'Acrostichopteris densifolia is a subjective synonym of Acrostichopteris longipennis'
- 'Acrostichopteris fimbriata belongs to Acrostichopteris' according to Knowlton 1907
- 'Acrostichopteris fimbriata belongs to Acrostichopteris'
- 'Acrostichopteris longipennis belongs to Acrostichopteris'
- 'Acrostichopteris parcelobata belongs to Acrostichopteris' according to Fontaine 1889
- 'Acrostichopteris parcelobata is a subjective synonym of Acrostichopteris parvifolia'
- 'Acrostichopteris parvifolia belongs to Acrostichopteris' according to Fontaine 1889
- 'Acrostichopteris parvifolia belongs to Acrostichopteris'
- 'Acrostichum belongs to Polypodiaceae'
- 'Acrostichum crassifolium belongs to Acrostichum' according to Fontaine 1889
- 'Acrostichum crassifolium belongs to Acrostichum'
- 'Acrostichum georgianum belongs to Acrostichum'
- 'Acrostichum haddeni belongs to Acrostichum' according to Hollick 1902
- 'Acrostichum haddeni belongs to Acrostichum'
- 'Acrostichum hesperium belongs to Acrostichum' according to Newberry 1882
- 'Acrostichum hesperium belongs to Acrostichum'
- 'Adiantites belongs to Polypodiaceae'
- 'Adiantites amurensis belongs to Adiantites' according to Heer 1876
- 'Adiantites amurensis is a subjective synonym of Coniopteris hymenophylloides'
- 'Adiantites gracillimus belongs to Adiantites' according to Lesquereux 1883
- 'Adiantites gracillimus is recombined as Anemia gracillima' according to Cockerell 1908
- 'Adiantites gracillimus is recombined as Anemia gracillima'
- 'Adiantites nympharum belongs to Adiantites' according to Heer 1876
- 'Adiantites nympharum belongs to Adiantites'
- 'Adiantites orovillensis belongs to Adiantites' according to Fontaine 1896
- 'Adiantites orovillensis belongs to Adiantites'
- 'Adiantites parvifolius belongs to Adiantites' according to Fontaine 1889
- 'Adiantites parvifolius is a subjective synonym of Onychiopsis nervosa'
- 'Adiantites praelongus belongs to Adiantites' according to Dawson 1882
- 'Adiantites praelongus belongs to Adiantites'
- 'Adiantum belongs to Polypodiaceae'
- 'Adiantum montanensis belongs to Adiantum' according to Knowlton 1907
- 'Adiantum montanensis belongs to Adiantum'
- 'Aesculophyllum belongs to Hippocastanaceae'
- 'Aesculophyllum hastingsense belongs to Aesculophyllum'
- 'Aesculus belongs to Hippocastanaceae'
- 'Aesculus antiquus belongs to Aesculus' according to Dawson 1875
- 'Aesculus antiquus belongs to Aesculus'
- 'Aesculus arctica belongs to Aesculus' according to Knowlton 1904
- 'Aesculus arctica belongs to Aesculus'
- 'Aesculus simulata belongs to Aesculus' according to Knowlton 1902
- 'Aesculus simulata belongs to Aesculus'
- 'Agaricaceae belongs to Agaricales'
- 'Agaricales belongs to Basidiomycota'
- 'Agaricites belongs to Agaricaceae'
- 'Agaricites conwentzi belongs to Agaricites' according to Platen 1907
- 'Agaricites conwentzi belongs to Agaricites'
- 'Ailanthophyllum belongs to Simarubaceae'
- 'Ailanthophyllum incertum belongs to Ailanthophyllum'
- 'Ailanthus belongs to Simarubaceae'
- 'Ailanthus americana belongs to Ailanthus' according to Cockerell 1908
- 'Ailanthus americana belongs to Ailanthus'
- 'Ailanthus longepetiolata belongs to Ailanthus' according to Lesquereux 1883
- 'Ailanthus longepetiolata belongs to Ailanthus'
- 'Ailanthus ovata belongs to Ailanthus' according to Lesquereux 1883
- 'Ailanthus ovata belongs to Ailanthus'
- 'Albertia latifolia belongs to Albertia' according to Emmons 1857
- 'Albertia latifolia is replaced by Otozamites carolinensis'
- 'Alethopteris was reranked as Pecopteris (Alethopteris) and belongs to Pecopteris' according to Oldham and Morris 1862
- 'Aleurites eocenica is recombined as Grewiopsis eocenica'
- 'Aleurites eocenica belongs to Aleurites' according to Lesquereux 1872
- 'Aleurites eocenica is recombined as Grewiopsis eocenica' according to Knowlton 1898
- 'Algae was reranked as a class and belongs to Plantae'
- 'Algites belongs to Algae'
- 'Algites americana belongs to Algites'
- 'Alismaceae belongs to Najadales'
- 'Alismacites belongs to Alismaceae'
- 'Alismacites dakotensis belongs to Alismacites' according to Lesquereux 1891
- 'Alismacites dakotensis belongs to Alismacites'
- 'Alismaphyllites belongs to Alismaceae'
- 'Alismaphyllites crassifolium belongs to Alismaphyllites'
- 'Alismaphyllum belongs to Alismaceae'
- 'Allantodiopsis belongs to Polypodiaceae'
- 'Alnites belongs to Betulaceae'
- 'Alnites crassus belongs to Alnites' according to Lesquereux 1893
- 'Alnites crassus belongs to Alnites'
- 'Alnites curta belongs to Alnites'
- 'Alnites curta belongs to Alnites' according to Dawson 1890
- 'Alnites insignis belongs to Alnites' according to Dawson 1882
- 'Alnites insignis belongs to Alnites'
- 'Alnites kefersteinii belongs to Alnites' according to Göppert 1837
- 'Alnites kefersteinii is recombined as Alnus kefersteinii' according to Unger 1869
- 'Alnites kefersteinii is recombined as Alnus kefersteinii'
- 'Alnites macquarrii belongs to Alnites' according to Forbes 1851
- 'Alnites macquarrii is recombined as Corylus macquarrii' according to Heer 1865
- 'Alnites unequilateralis belongs to Alnites' according to Lesquereux 1875
- 'Alnites unequilateralis is recombined as Alnus inaequilateralis'
- 'Alnus belongs to Betulaceae'
- 'Alnus alaskana belongs to Alnus' according to Newberry 1882
- 'Alnus alaskana belongs to Alnus'
- 'Alnus americana belongs to Alnus' according to Ettingshausen 1883
- 'Alnus americana belongs to Alnus'
- 'Alnus auraria belongs to Alnus' according to Knowlton and Cockerell 1919
- 'Alnus carpinifolia belongs to Alnus'
- 'Alnus carpinifolia belongs to Alnus' according to Lesquereux 1888
- 'Alnus carpinoides belongs to Alnus' according to Lesquereux 1883
- 'Alnus carpinoides belongs to Alnus'
- 'Alnus cordata belongs to Alnus' according to Duby 1828
- 'Alnus cordata belongs to Alnus' according to Lesquereux 1883
- 'Alnus cordata is replaced by Alnus praecordata'
- 'Alnus corrallina belongs to Alnus' according to Lesquereux 1883
- 'Alnus corrallina belongs to Alnus'
- 'Alnus corylifolia belongs to Alnus' according to Lesquereux 1882
- 'Alnus corylifolia is corrected as Alnus corylina and belongs to Alnus'
- 'Alnus grandiflora belongs to Alnus' according to Newberry 1882
- 'Alnus grandiflora belongs to Alnus'
- 'Alnus grandifolia belongs to Alnus' according to Newberry 1869
- 'Alnus grandifolia is recombined as Alnites grandifolia'
- 'Alnus grewiopsis belongs to Alnus' according to Ward 1885
- 'Alnus grewiopsis belongs to Alnus'
- 'Alnus kanseana belongs to Alnus' according to Lesquereux 1874
- 'Alnus kanseana is recombined as Quercus kanseana' according to Knowlton 1898
- 'Alnus kanseana is recombined as Quercus kanseana'
- 'Alnus macrodonta belongs to Alnus' according to Knowlton 1902
- 'Alnus macrodonta belongs to Alnus'
- 'Alnus praecordata belongs to Alnus' according to Cockerell 1908
- 'Alnus praecordata belongs to Alnus'
- 'Alnus rhamnifolia belongs to Alnus' according to Nuttall 1911
- 'Alnus rhamnifolia belongs to Alnus'
- 'Alnus rubra belongs to Alnus' according to Bongard 1833
- 'Alnus rubra belongs to Alnus'
- 'Alnus rugosa belongs to Alnus' according to Koch 1872
- 'Alnus rugosa belongs to Alnus'
- 'Alnus rugosa belongs to Alnus' according to Lesquereux 1888
- 'Alnus rugosa is replaced by Alnus auraria'
- 'Alnus serrata belongs to Alnus' according to Newberry 1868
- 'Alnus serrata belongs to Alnus'
- 'Alnus serrulata belongs to Alnus' according to Newberry 1898
- 'Alnus serrulata belongs to Alnus'
- 'Amelanchier belongs to Pomaceae'
- 'Amelanchier alnifolia belongs to Amelanchier' according to Nuttall 1911
- 'Amelanchier alnifolia belongs to Amelanchier'
- 'Amelanchier canadensis belongs to Amelanchier' according to Medikus 1789
- 'Amelanchier canadensis rotundifolia belongs to Amelanchier canadensis' according to Michaux 1892
- 'Amelanchier canadensis rotundifolia is recombined as Amelanchier rotundifolia'
- 'Amelanchier obovata belongs to Amelanchier' according to Knowlton 1917
- 'Amelanchier obovata belongs to Amelanchier'
- 'Amelanchier peritula belongs to Amelanchier' according to Cockerell 1908
- 'Amelanchier peritula belongs to Amelanchier'
- 'Amelanchier scudderi belongs to Amelanchier' according to Cockerell 1906
- 'Amelanchier scudderi belongs to Amelanchier'
- 'Amelanchier similis belongs to Amelanchier'
- 'Amelanchier typica belongs to Amelanchier' according to Lesquereux 1883
- 'Amelanchier typica belongs to Amelanchier'
- 'Amelanchier whitei belongs to Amelanchier' according to Hollick 1906
- 'Amelanchier whitei belongs to Amelanchier'
- 'Ampelophyllum is replaced by Ampelophyllites'
- 'Ampelophyllum attenuatum is recombined as Ampelophyllites attenuatus'
- 'Ampelophyllum firmus is recombined as Ampelophyllites firmus'
- 'Ampelopsis belongs to Vitaceae'
- 'Ampelopsis montanensis belongs to Ampelopsis' according to Cockerell 1908
- 'Ampelopsis montanensis belongs to Ampelopsis'
- 'Ampelopsis quinquefolia belongs to Ampelopsis' according to Michaux 1803
- 'Ampelopsis quinquefolia belongs to Ampelopsis'
- 'Ampelopsis tertiaria belongs to Ampelopsis' according to Lesquereux 1871
- 'Ampelopsis tertiaria belongs to Ampelopsis'
- 'Amygdalus belongs to Drupaceae'
- 'Amygdalus gracilis belongs to Amygdalus' according to Lesquereux 1883
- 'Amygdalus gracilis belongs to Amygdalus'
- 'Anabacaulus duplicatus belongs to Anabacaulus'
- 'Anabacaulus sulcatus belongs to Anabacaulus' according to Emmons 1857
- 'Anabacaulus sulcatus belongs to Anabacaulus'
- 'Anacardiaceae belongs to Sapindales'
- 'Anacardioxylon belongs to Anacardiaceae'
- 'Anacardioxylon magniporosum belongs to Anacardioxylon' according to Platen 1907
- 'Anacardioxylon magniporosum belongs to Anacardioxylon'
- 'Anacardites belongs to Anacardiaceae'
- 'Anacardites antiquus belongs to Anacardites' according to Lesquereux 1891
- 'Anacardites antiquus belongs to Anacardites'
- 'Anacardites falcatus belongs to Anacardites'
- 'Anacardites falcatus belongs to Anacardites' according to Berry 1916
- 'Anacardites grevillaefolia belongs to Anacardites' according to Berry 1916
- 'Anacardites grevillaefolia belongs to Anacardites'
- 'Anacardites marshallensis belongs to Anacardites' according to Berry 1916
- 'Anacardites marshallensis belongs to Anacardites'
- 'Anacardites metopifolia belongs to Anacardites' according to Berry 1916
- 'Anacardites metopifolia belongs to Anacardites'
- 'Anacardites minor belongs to Anacardites' according to Berry 1916
- 'Anacardites minor belongs to Anacardites'
- 'Anacardites puryearensis belongs to Anacardites' according to Berry 1916
- 'Anacardites puryearensis belongs to Anacardites'
- 'Anacardites serratus belongs to Anacardites' according to Berry 1916
- 'Anacardites serratus belongs to Anacardites'
- 'Andromeda belongs to Ericaceae'
- 'Andromeda acuminata belongs to Andromeda' according to Lesquereux 1875
- 'Andromeda acuminata is replaced by Andromeda dakotana'
- 'Andromeda affinis belongs to Andromeda' according to Lesquereux 1874
- 'Andromeda affinis belongs to Andromeda'
- 'Andromeda angustifolia belongs to Andromeda'
- 'Andromeda angustifolia belongs to Andromeda' according to Berry 1914
- 'Andromeda cookii belongs to Andromeda' according to Berry 1909
- 'Andromeda cookii belongs to Andromeda'
- 'Andromeda crassa belongs to Andromeda' according to Lesquereux 1888
- 'Andromeda crassa belongs to Andromeda'
- 'Andromeda cretacea belongs to Andromeda'
- 'Andromeda dakotana belongs to Andromeda' according to Knowlton and Cockerell 1919
- 'Andromeda delicatula belongs to Andromeda' according to Lesquereux 1883
- 'Andromeda delicatula belongs to Andromeda'
- 'Andromeda dubia belongs to Andromeda' according to Lesquereux 1859
- 'Andromeda dubia is a subjective synonym of Diospyros brachysepala'
- 'Andromeda eolignitica belongs to Andromeda' according to Hollick 1899
- 'Andromeda eolignitica is recombined as Mespilodaphne eolignitica' according to Berry 1916
- 'Andromeda eolignitica is recombined as Mespilodaphne eolignitica'
- 'Andromeda euphorbiophylloides belongs to Andromeda'
- 'Andromeda flexuosa belongs to Andromeda' according to Moon 1849
- 'Andromeda flexuosa belongs to Andromeda' according to Newberry 1896
- 'Andromeda flexuosa is replaced by Andromeda cookii'
- 'Andromeda grandifolia belongs to Andromeda'
- 'Andromeda grayana belongs to Andromeda' according to Heer 1865
- 'Andromeda grayana belongs to Andromeda'
- 'Andromeda lanceolata belongs to Andromeda' according to Knowlton 1917
- 'Andromeda lanceolata belongs to Andromeda'
- 'Andromeda latifolia belongs to Andromeda' according to Newberry 1895
- 'Andromeda latifolia is a subjective synonym of Andromeda grandifolia'
- 'Andromeda linearifolia belongs to Andromeda' according to Lesquereux 1887
- 'Andromeda linearifolia belongs to Andromeda'
- 'Andromeda linifolia belongs to Andromeda' according to Lesquereux 1891
- 'Andromeda linifolia belongs to Andromeda'
- 'Andromeda novaecaesareae belongs to Andromeda'
- 'Andromeda parlatorii belongs to Andromeda'
- 'Andromeda parlatorii is recombined as Prunus parlatorii' according to Lesquereux 1868
- 'Andromeda pfaffiana belongs to Andromeda' according to Heer 1882
- 'Andromeda pfaffiana belongs to Andromeda'
- 'Andromeda protogaea belongs to Andromeda'
- 'Andromeda protogaea belongs to Andromeda' according to Unger 1850
- 'Andromeda racemosa is recombined as Leucothoe racemosa' according to Gray 1860
- 'Andromeda racemosa is recombined as Leucothoe racemosa'
- 'Andromeda reticulata belongs to Andromeda' according to Ettingshausen 1850
- 'Andromeda reticulata belongs to Andromeda'
- 'Andromeda scripta belongs to Andromeda' according to Knowlton 1917
- 'Andromeda scripta belongs to Andromeda'
- 'Andromeda scudderiana belongs to Andromeda' according to Cockerell 1908
- 'Andromeda scudderiana is a subjective synonym of Cotinus fraterna'
- 'Andromeda snowii belongs to Andromeda' according to Lesquereux 1891
- 'Andromeda snowii belongs to Andromeda'
- 'Andromeda tenuinervis belongs to Andromeda' according to Lesquereux 1891
- 'Andromeda tenuinervis belongs to Andromeda'
- 'Andromeda wardiana belongs to Andromeda'
- 'Androvettia belongs to Coniferales'
- 'Androvettia carolinensis belongs to Androvettia' according to Berry 1910
- 'Androvettia carolinensis belongs to Androvettia'
- 'Androvettia elegans belongs to Androvettia'
- 'Androvettia statenensis belongs to Androvettia'
- 'Anemia belongs to Schizaeaceae'
- 'Anemia eocenica belongs to Anemia' according to Berry 1916
- 'Anemia eocenica belongs to Anemia'
- 'Anemia fremonti belongs to Anemia' according to Knowlton 1917
- 'Anemia fremonti belongs to Anemia'
- 'Anemia hesperia belongs to Anemia'
- 'Anemia hesperia belongs to Anemia' according to Knowlton 1916
- 'Anemia occidentalis belongs to Anemia' according to Knowlton 1917
- 'Anemia occidentalis belongs to Anemia'
- 'Anemia perplexa belongs to Anemia' according to Hollick 1898
- 'Anemia perplexa is a subjective synonym of Anemia elongata'
- 'Anemia robusta belongs to Anemia' according to Hollick 1902
- 'Anemia robusta belongs to Anemia'
- 'Anemia stricta is a subjective synonym of Dicksonia groenlandica'
- 'Anemia stricta belongs to Anemia' according to Newberry 1895
- 'Anemia supercretacea belongs to Anemia' according to Hollick 1902
- 'Anemia supercretacea belongs to Anemia'
- 'Angiopteridium belongs to Marattiaceae'
- 'Angiopteridium auriculatum is recombined as Taeniopteris auriculata'
- 'Angiopteridium californicum belongs to Angiopteridium' according to Fontaine 1896
- 'Angiopteridium canmorense belongs to Angiopteridium' according to Dawson 1892
- 'Angiopteridium densinerve belongs to Angiopteridium' according to Fontaine 1889
- 'Angiopteridium densinerve is a subjective synonym of Taeniopteris nervosa'
- 'Angiopteridium dentatum belongs to Angiopteridium' according to Fontaine 1889
- 'Angiopteridium ellipticum belongs to Angiopteridium' according to Fontaine 1889
- 'Angiopteridium nervosum is recombined as Taeniopteris nervosa'
- 'Angiopteridium nervosum belongs to Angiopteridium' according to Fontaine 1889
- 'Angiopteridium nervosum is recombined as Taeniopteris nervosa' according to Berry 1910
- 'Angiopteridium oregonense belongs to Angiopteridium' according to Fontaine 1895
- 'Angiopteridium oregonense is recombined as Sagenopteris oregonensis' according to Fontaine 1905
- 'Angiopteridium oregonense is recombined as Sagenopteris oregonensis'
- 'Angiopteridium ovatum belongs to Angiopteridium' according to Fontaine 1889
- 'Angiopteridium pachyphyllum belongs to Angiopteridium' according to Fontaine 1889
- 'Angiopteridium pachyphyllum is a subjective synonym of Taeniopteris nervosa'
- 'Angiopteridium strictinerve belongs to Angiopteridium' according to Fontaine 1889
- 'Angiopteridium strictinerve is a subjective synonym of Taeniopteris nervosa'
- 'Angiospermae was reranked as a class and belongs to Spermatophyta'
- 'Anisophyllum belongs to Dicotyledones'
- 'Annonaceae is corrected as Anonaceae and belongs to Ranales'
- 'Anomalofilicites belongs to Polypodiaceae'
- 'Anomalofilicites monstrosus belongs to Anomalofilicites'
- 'Anomaspis belongs to Coniferales'
- 'Anomaspis hispida belongs to Anomaspis' according to Hollick and Jeffrey 1909
- 'Anomaspis hispida belongs to Anomaspis'
- 'Anomaspis tuberculata belongs to Anomaspis'
- 'Anomophyllites belongs to Monocotyledones'
- 'Anomophyllites bridgetonensis belongs to Anomophyllites' according to Hollick 1897
- 'Anomophyllites bridgetonensis belongs to Anomophyllites'
- 'Anomozamites belongs to Cycadaceae'
- 'Anomozamites acutilobus belongs to Anomozamites' according to Heer 1876
- 'Anomozamites acutilobus belongs to Anomozamites'
- 'Anomozamites angustifolius belongs to Anomozamites' according to Fontaine 1889
- 'Anomozamites angustifolius is a subjective synonym of Taeniopteris nervosa'
- 'Anomozamites egyptiacus belongs to Anomozamites' according to Fontaine 1900
- 'Anomozamites egyptiacus belongs to Anomozamites'
- 'Anomozamites schmidtii belongs to Anomozamites' according to Heer 1876
- 'Anomozamites schmidtii belongs to Anomozamites'
- 'Anomozamites virginicus belongs to Anomozamites' according to Fontaine 1889
- 'Anomozamites virginicus is a subjective synonym of Taeniopteris nervosa'
- 'Anona belongs to Anonaceae'
- 'Anona ampla belongs to Anona' according to Berry 1916
- 'Anona ampla belongs to Anona'
- 'Anona cretacea belongs to Anona' according to Lesquereux 1883
- 'Anona cretacea belongs to Anona'
- 'Anona eolignitica belongs to Anona' according to Berry 1916
- 'Anona eolignitica belongs to Anona'
- 'Anona glabra belongs to Anona'
- 'Anona robusta belongs to Anona' according to Lesquereux 1883
- 'Anona robusta belongs to Anona'
- 'Anona spoliata belongs to Anona' according to Cockerell 1908
- 'Anona spoliata belongs to Anona'
- 'Anona wilcoxiana belongs to Anona' according to Berry 1916
- 'Anona wilcoxiana belongs to Anona'
- 'Antholithes amissus belongs to Antholithes' according to Heer 1868
- 'Antholithes amissus belongs to Antholithes'
- 'Antholithes amoenus belongs to Antholithes' according to Lesquereux 1883
- 'Antholithes amoenus belongs to Antholithes'
- 'Antholithes improbus belongs to Antholithes' according to Lesquereux 1883
- 'Antholithes improbus belongs to Antholithes'
- 'Antholithes obtusilobus belongs to Antholithes' according to Lesquereux 1883
- 'Antholithes obtusilobus belongs to Antholithes'
- 'Antholithes pediloides belongs to Antholithes' according to Cockerell 1915
- 'Antholithes pediloides belongs to Antholithes'
- 'Antholithus belongs to Plantae'
- 'Antholithus arundites belongs to Antholithus' according to Berry 1916
- 'Antholithus arundites belongs to Antholithus'
- 'Antholithus gaudiumrosae is recombined as Antholithes gaudiumrosae'
- 'Antholithus gaudiumrosae belongs to Antholithus' according to Ward 1895
- 'Antholithus gaudiumrosae is recombined as Antholithes gaudiumrosae' according to Ward 1905
- 'Antholithus marshallensis belongs to Antholithus' according to Berry 1916
- 'Antholithus marshallensis belongs to Antholithus'
- 'Apeibopsis belongs to Tiliaceae'
- 'Apeibopsis cyclophylla belongs to Apeibopsis' according to Lesquereux 1891
- 'Apeibopsis cyclophylla belongs to Apeibopsis'
- 'Apeibopsis gaudini belongs to Apeibopsis'
- 'Apeibopsis heerii belongs to Apeibopsis' according to Lesquereux 1861
- 'Apeibopsis heerii belongs to Apeibopsis'
- 'Apeibopsis neomexicana belongs to Apeibopsis' according to Knowlton 1917
- 'Apeibopsis neomexicana belongs to Apeibopsis'
- 'Apeibopsis parva belongs to Apeibopsis' according to Perkins 1904
- 'Apeibopsis parva belongs to Apeibopsis'
- 'Apocynaceae belongs to Gentianales'
- 'Apocynophyllum belongs to Apocynaceae'
- 'Apocynophyllum constrictum belongs to Apocynophyllum' according to Berry 1916
- 'Apocynophyllum constrictum belongs to Apocynophyllum'
- 'Apocynophyllum lesquereuxii belongs to Apocynophyllum' according to Ettingshausen 1883
- 'Apocynophyllum lesquereuxii belongs to Apocynophyllum'
- 'Apocynophyllum linifolium belongs to Apocynophyllum' according to Knowlton 1917
- 'Apocynophyllum linifolium belongs to Apocynophyllum'
- 'Apocynophyllum mississippiensis belongs to Apocynophyllum' according to Berry 1916
- 'Apocynophyllum mississippiensis belongs to Apocynophyllum'
- 'Apocynophyllum pealii belongs to Apocynophyllum'
- 'Apocynophyllum pealii belongs to Apocynophyllum' according to Ettingshausen 1883
- 'Apocynophyllum sapindifolium belongs to Apocynophyllum' according to Hollick 1899
- 'Apocynophyllum sapindifolium belongs to Apocynophyllum'
- 'Apocynophyllum scudderi belongs to Apocynophyllum' according to Lesquereux 1883
- 'Apocynophyllum scudderi belongs to Apocynophyllum'
- 'Apocynophyllum sordidum belongs to Apocynophyllum' according to Lesquereux 1891
- 'Apocynophyllum sordidum belongs to Apocynophyllum'
- 'Apocynophyllum wilcoxensis belongs to Apocynophyllum' according to Berry 1916
- 'Apocynophyllum wilcoxensis belongs to Apocynophyllum'
- 'Araceae belongs to Arales'
- 'Araceaeites belongs to Araceae'
- 'Araceaeites friteli belongs to Araceaeites' according to Berry 1916
- 'Araceaeites friteli belongs to Araceaeites'
- 'Arales belongs to Monocotyledones'
- 'Aralia belongs to Araliaceae'
- 'Aralia acerifolia belongs to Aralia' according to Lesquereux 1883
- 'Aralia acerifolia is replaced by Aralia dakotana'
- 'Aralia angustiloba belongs to Aralia'
- 'Aralia berberidifolia belongs to Aralia'
- 'Aralia berberidifolia belongs to Aralia' according to Lesquereux 1891
- 'Aralia brittoniana belongs to Aralia' according to Berry 1903
- 'Aralia brittoniana belongs to Aralia'
- 'Aralia coloradensis belongs to Aralia' according to Knowlton 1917
- 'Aralia coloradensis belongs to Aralia'
- 'Aralia concinna belongs to Aralia' according to Newberry 1895
- 'Aralia concinna is a subjective synonym of Aralia wellingtoniana'
- 'Aralia concreta belongs to Aralia' according to Lesquereux 1875
- 'Aralia concreta belongs to Aralia'
- 'Aralia coriacea belongs to Aralia' according to Velenovsky 1884
- 'Aralia coriacea belongs to Aralia'
- 'Aralia cottondalensis belongs to Aralia' according to Berry 1919
- 'Aralia cottondalensis belongs to Aralia'
- 'Aralia dakotana belongs to Aralia' according to Knowlton and Cockerell 1919
- 'Aralia digitata belongs to Aralia' according to Roxburgh 1814
- 'Aralia digitata belongs to Aralia' according to Ward 1885
- 'Aralia digitata is replaced by Aralia wardiana'
- 'Aralia dissecta belongs to Aralia' according to Lesquereux 1883
- 'Aralia dissecta belongs to Aralia'
- 'Aralia eutawensis belongs to Aralia'
- 'Aralia fontainei belongs to Aralia' according to Knowlton 1898
- 'Aralia fontainei is a subjective synonym of Sapindopsis magnifolia'
- 'Aralia formosa belongs to Aralia' according to Heer 1869
- 'Aralia formosa belongs to Aralia'
- 'Aralia groenlandica belongs to Aralia' according to Heer 1882
- 'Aralia groenlandica belongs to Aralia'
- 'Aralia jorgenseni belongs to Aralia' according to Heer 1883
- 'Aralia jorgenseni belongs to Aralia'
- 'Aralia lasseniana belongs to Aralia' according to Lesquereux 1888
- 'Aralia looziana belongs to Aralia' according to Saporta and Marion 1878
- 'Aralia looziana belongs to Aralia'
- 'Aralia macrophylla belongs to Aralia' according to Lindley 1844
- 'Aralia macrophylla belongs to Aralia' according to Newberry 1882
- 'Aralia macrophylla is replaced by Aralia wyomingensis'
- 'Aralia masoni belongs to Aralia'
- 'Aralia masoni belongs to Aralia' according to Lesquereux 1891
- 'Aralia mattewanensis belongs to Aralia' according to Berry 1903
- 'Aralia mattewanensis belongs to Aralia'
- 'Aralia nassauensis belongs to Aralia' according to Hollick 1894
- 'Aralia nassauensis belongs to Aralia'
- 'Aralia newberryi belongs to Aralia' according to Berry 1907
- 'Aralia newberryi belongs to Aralia'
- 'Aralia notata belongs to Aralia' according to Lesquereux 1878
- 'Aralia notata belongs to Aralia'
- 'Aralia palmata belongs to Aralia' according to Newberry 1895
- 'Aralia palmata is a subjective synonym of Aralia newberryi'
- 'Aralia patens belongs to Aralia' according to Newberry 1895
- 'Aralia patens belongs to Aralia'
- 'Aralia polymorpha belongs to Aralia' according to Newberry 1895
- 'Aralia polymorpha belongs to Aralia'
- 'Aralia pungens belongs to Aralia' according to Lesquereux 1883
- 'Aralia pungens is recombined as Artocarpus pungens' according to Hollick 1899
- 'Aralia pungens is recombined as Artocarpus pungens'
- 'Aralia quinquepartita belongs to Aralia'
- 'Aralia quinquepartita belongs to Aralia' according to Lesquereux 1875
- 'Aralia radiata belongs to Aralia' according to Lesquereux 1883
- 'Aralia radiata belongs to Aralia'
- 'Aralia ravniana belongs to Aralia' according to Heer 1882
- 'Aralia ravniana belongs to Aralia'
- 'Aralia rotundata belongs to Aralia' according to Dawson 1885
- 'Aralia rotundata belongs to Aralia'
- 'Aralia rotundiloba belongs to Aralia' according to Newberry 1895
- 'Aralia rotundiloba belongs to Aralia'
- 'Aralia saportana belongs to Aralia' according to Lesquereux 1875
- 'Aralia saportana belongs to Aralia'
- 'Aralia semiorbiculata belongs to Aralia' according to Lesquereux 1875
- 'Aralia semiorbiculata is a subjective synonym of Aralia concreta'
- 'Aralia serrata belongs to Aralia' according to Knowlton 1917
- 'Aralia serrata belongs to Aralia'
- 'Aralia serrulata belongs to Aralia'
- 'Aralia subemarginata belongs to Aralia' according to Lesquereux 1883
- 'Aralia subemarginata belongs to Aralia'
- 'Aralia tenuinervis belongs to Aralia' according to Lesquereux 1883
- 'Aralia tenuinervis belongs to Aralia'
- 'Aralia towneri belongs to Aralia' according to Lesquereux 1875
- 'Aralia towneri belongs to Aralia'
- 'Aralia triloba belongs to Aralia' according to Newberry 1868
- 'Aralia triloba belongs to Aralia'
- 'Aralia tripartita is recombined as Sterculia tripartita' according to Knowlton 1898
- 'Aralia tripartita is recombined as Sterculia tripartita'
- 'Aralia tripartita belongs to Aralia' according to Lesquereux 1874
- 'Aralia veatchii belongs to Aralia' according to Knowlton 1917
- 'Aralia veatchii belongs to Aralia'
- 'Aralia vernonensis belongs to Aralia' according to Fontaine 1905
- 'Aralia vernonensis belongs to Aralia'
- 'Aralia wardiana belongs to Aralia' according to Knowlton and Cockerell 1919
- 'Aralia washingtoniana belongs to Aralia' according to Berry 1910
- 'Aralia washingtoniana belongs to Aralia'
- 'Aralia wellingtoniana belongs to Aralia' according to Lesquereux 1891
- 'Aralia wellingtoniana belongs to Aralia'
- 'Aralia westoni belongs to Aralia' according to Dawson 1885
- 'Aralia westoni belongs to Aralia'
- 'Aralia whitneyi belongs to Aralia'
- 'Aralia wrightii belongs to Aralia'
- 'Aralia wyomingensis belongs to Aralia' according to Knowlton and Cockerell 1919
- 'Aralia zaddachi belongs to Aralia' according to Heer 1869
- 'Aralia zaddachi belongs to Aralia'
- 'Araliaceae belongs to Umbellales'
- 'Araliaephyllum belongs to Araliaceae'
- 'Araliaephyllum aceroides belongs to Araliaephyllum' according to Fontaine 1889
- 'Araliaephyllum aceroides is a subjective synonym of Araliaephyllum magnifolium'
- 'Araliaephyllum acutilobum belongs to Araliaephyllum' according to Fontaine 1889
- 'Araliaephyllum acutilobum is a subjective synonym of Araliaephyllum crassinerve'
- 'Araliaephyllum magnifolium belongs to Araliaephyllum' according to Fontaine 1889
- 'Araliaephyllum magnifolium belongs to Araliaephyllum'
- 'Araliaephyllum obtusilobum is a subjective synonym of Araliaephyllum crassinerve'
- 'Aralinium belongs to Araliaceae'
- 'Aralinium excellens belongs to Aralinium'
- 'Aralinium lindgreni belongs to Aralinium' according to Platen 1907
- 'Aralinium lindgreni belongs to Aralinium'
- 'Aralinium multiradiatum belongs to Aralinium' according to Platen 1908
- 'Aralinium multiradiatum belongs to Aralinium'
- 'Aralinium parenchymaticum belongs to Aralinium'
- 'Aralinium parenchymaticum belongs to Aralinium' according to Platen 1908
- 'Araliopsis is replaced by Araliopsoides'
- 'Araliopsis breviloba belongs to Araliopsis' according to Berry 1911
- 'Araliopsis breviloba is recombined as Araliopsoides breviloba' according to Berry 1916
- 'Araliopsoides belongs to Araliaceae'
- 'Araucaria belongs to Araucariaceae'
- 'Araucaria bladenensis belongs to Araucaria'
- 'Araucaria clarkii belongs to Araucaria' according to Berry 1910
- 'Araucaria clarkii belongs to Araucaria'
- 'Araucaria darlingtonensis belongs to Araucaria'
- 'Araucaria hatcheri belongs to Araucaria' according to Wieland 1908
- 'Araucaria hatcheri belongs to Araucaria'
- 'Araucaria hespera belongs to Araucaria'
- 'Araucaria jeffreyi belongs to Araucaria'
- 'Araucaria marylandica belongs to Araucaria' according to Berry 1916
- 'Araucaria marylandica belongs to Araucaria'
- 'Araucaria obtusifolia belongs to Araucaria' according to Fontaine 1889
- 'Araucaria obtusifolia belongs to Araucaria'
- 'Araucaria peregrina belongs to Araucaria' according to Lindley and Hutton 1833
- 'Araucaria peregrina is recombined as Pachyphyllum peregrinum' according to Fontaine 1883
- 'Araucaria peregrina is recombined as Pagiophyllum peregrinum' according to Schenk 1884
- 'Araucaria peregrina is recombined as Pagiophyllum peregrinum'
- 'Araucaria podocarpoides belongs to Araucaria' according to Fontaine 1889
- 'Araucaria podocarpoides belongs to Araucaria'
- 'Araucaria spatulata belongs to Araucaria' according to Newberry 1868
- 'Araucaria spatulata belongs to Araucaria'
- 'Araucaria zamioides belongs to Araucaria' according to Fontaine 1889
- 'Araucaria zamioides belongs to Araucaria'
- 'Araucariaceae belongs to Coniferales'
- 'Araucariopitys belongs to Araucariaceae'
- 'Araucariopitys americana belongs to Araucariopitys'
- 'Araucarioxylon belongs to Araucariaceae'
- 'Araucarioxylon arizonicum belongs to Araucarioxylon'
- 'Araucarioxylon arizonicum belongs to Araucarioxylon' according to Knowlton 1888
- 'Araucarioxylon hoppertonae belongs to Araucarioxylon' according to Knowlton 1899
- 'Araucarioxylon hoppertonae belongs to Araucarioxylon'
- 'Araucarioxylon noveboracense belongs to Araucarioxylon' according to Hollick and Jeffrey 1909
- 'Araucarioxylon noveboracense belongs to Araucarioxylon'
- 'Araucarioxylon obscurum belongs to Araucarioxylon' according to Knowlton 1900
- 'Araucarioxylon obscurum belongs to Araucarioxylon'
- 'Araucarioxylon prosseri belongs to Araucarioxylon' according to Penhallow 1900
- 'Araucarioxylon prosseri belongs to Araucarioxylon'
- 'Araucarioxylon virginianum belongs to Araucarioxylon' according to Knowlton 1889
- 'Araucarioxylon virginianum belongs to Araucarioxylon'
- 'Araucarioxylon woodworthi belongs to Araucarioxylon' according to Knowlton 1899
- 'Araucarioxylon woodworthi belongs to Araucarioxylon'
- 'Araucarites belongs to Araucariaceae'
- 'Araucarites aquiensis belongs to Araucarites'
- 'Araucarites carolinensis belongs to Araucarites' according to Fontaine 1883
- 'Araucarites carolinensis is a nomen dubium'
- 'Araucarites chiquito belongs to Araucarites' according to Ward 1900
- 'Araucarites chiquito belongs to Araucarites'
- 'Araucarites cuneatus belongs to Araucarites' according to Ward 1899
- 'Araucarites cuneatus belongs to Araucarites'
- 'Araucarites ovatus belongs to Araucarites' according to Hollick 1897
- 'Araucarites ovatus belongs to Araucarites'
- 'Araucarites patapscoensis belongs to Araucarites'
- 'Araucarites pennsylvanicus belongs to Araucarites' according to Fontaine 1900
- 'Araucarites pennsylvanicus belongs to Araucarites'
- 'Araucarites reichenbachi is recombined as Geinitzia reichenbachi' according to Hollick and Jeffrey 1909
- 'Araucarites reichenbachi is recombined as Sequoia reichenbachi'
- 'Araucarites virginicus belongs to Araucarites' according to Fontaine 1889
- 'Araucarites virginicus belongs to Araucarites'
- 'Araucarites wyomingensis belongs to Araucarites' according to Fontaine 1899
- 'Araucarites wyomingensis belongs to Araucarites'
- 'Araucarites yorkensis belongs to Araucarites' according to Fontaine 1900
- 'Araucarites yorkensis belongs to Araucarites'
- 'Araucarites zeilleri belongs to Araucarites' according to Berry 1908
- 'Araucarites zeilleri belongs to Araucarites'
- 'Arbutus belongs to Ericaceae'
- 'Arbutus menziesii belongs to Arbutus'
- 'Arbutus menziesii belongs to Arbutus' according to Pursh 1813
- 'Arctostaphylos belongs to Ericaceae'
- 'Arctostaphylos elliptica belongs to Arctostaphylos'
- 'Arctostaphylos manzanita belongs to Arctostaphylos' according to Parry 1887
- 'Arctostaphylos manzanita belongs to Arctostaphylos'
- 'Arecaceae belongs to Arecales'
- 'Arecales belongs to Monocotyledones'
- 'Arisaema belongs to Araceae'
- 'Arisaema cretacea belongs to Arisaema' according to Lesquereux 1891
- 'Arisaema cretacea belongs to Arisaema'
- 'Arisaema dubia belongs to Arisaema' according to Hollick 1897
- 'Arisaema dubia is a subjective synonym of Arisaema cretacea'
- 'Arisaema mattewanense belongs to Arisaema' according to Hollick 1897
- 'Arisaema mattewanense belongs to Arisaema'
- 'Aristolochia belongs to Aristolochiaceae'
- 'Aristolochia cordifolia is a subjective synonym of Aristolochia crassifolia'
- 'Aristolochia cordifolia belongs to Aristolochia' according to Newberry 1868
- 'Aristolochia curvata belongs to Aristolochia' according to Lesquereux 1861
- 'Aristolochia curvata is recombined as Aristolochites curvatus' according to Perkins 1904
- 'Aristolochia curvata is recombined as Aristolochites curvatus'
- 'Aristolochia elongata belongs to Aristolochia' according to Knowlton 1917
- 'Aristolochia elongata belongs to Aristolochia'
- 'Aristolochia mortua belongs to Aristolochia' according to Cockerell 1908
- 'Aristolochia mortua belongs to Aristolochia'
- 'Aristolochia obscura belongs to Aristolochia' according to Lesquereux 1861
- 'Aristolochia obscura belongs to Aristolochia'
- 'Aristolochia oeningensis belongs to Aristolochia' according to Heer 1856
- 'Aristolochia oeningensis belongs to Aristolochia'
- 'Aristolochia wilcoxiana belongs to Aristolochia' according to Berry 1916
- 'Aristolochia wilcoxiana belongs to Aristolochia'
- 'Aristolochia williardiana belongs to Aristolochia' according to Knowlton 1916
- 'Aristolochia williardiana belongs to Aristolochia'
- 'Aristolochiaceae belongs to Aristolochiales'
- 'Aristolochiaephyllum belongs to Aristolochiaceae'
- 'Aristolochiaephyllum cellulare belongs to Aristolochiaephyllum' according to Ward 1905
- 'Aristolochiaephyllum cellulare belongs to Aristolochiaephyllum'
- 'Aristolochiaephyllum crassinerve belongs to Aristolochiaephyllum'
- 'Aristolochiales belongs to Dicotyledones'
- 'Aristolochites belongs to Aristolochiaceae'
- 'Aristolochites acutus belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites acutus belongs to Aristolochites'
- 'Aristolochites apicalis belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites apicalis belongs to Aristolochites'
- 'Aristolochites brandonianus belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites brandonianus belongs to Aristolochites'
- 'Aristolochites coniodeus belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites coniodeus belongs to Aristolochites'
- 'Aristolochites crassicostatus belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites crassicostatus belongs to Aristolochites'
- 'Aristolochites cuneatus belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites cuneatus belongs to Aristolochites'
- 'Aristolochites dentata is recombined as Aristolochia dentata' according to Lesquereux 1883
- 'Aristolochites dentata belongs to Aristolochites'
- 'Aristolochites dubius belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites dubius belongs to Aristolochites'
- 'Aristolochites elegans belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites elegans belongs to Aristolochites'
- 'Aristolochites excavatus belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites excavatus belongs to Aristolochites'
- 'Aristolochites globosus belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites globosus belongs to Aristolochites'
- 'Aristolochites infundibuliformis belongs to Aristolochites' according to Lesquereux 1876
- 'Aristolochites irregularis belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites irregularis belongs to Aristolochites'
- 'Aristolochites latisulcatus belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites latisulcatus belongs to Aristolochites'
- 'Aristolochites majus belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites majus belongs to Aristolochites'
- 'Aristolochites ovoides belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites ovoides belongs to Aristolochites'
- 'Aristolochites rugosus belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites rugosus belongs to Aristolochites'
- 'Aristolochites sulcatus belongs to Aristolochites' according to Perkins 1904
- 'Aristolochites sulcatus belongs to Aristolochites'
- 'Arthrodendron belongs to Algae'
- 'Arthrodendron diffusum belongs to Arthrodendron'
- 'Arthrotaxopsis belongs to Plantae'
- 'Arthrotaxopsis expansa belongs to Arthrotaxopsis' according to Fontaine 1906
- 'Arthrotaxopsis expansa is a subjective synonym of Sequoia ambigua'
- 'Artocarpidium belongs to Moraceae'
- 'Artocarpidium cretaceum belongs to Artocarpidium' according to Ettingshausen 1867
- 'Artocarpidium cretaceum belongs to Artocarpidium'
- 'Artocarpoides belongs to Moraceae'
- 'Artocarpoides wilcoxensis belongs to Artocarpoides' according to Berry 1916
- 'Artocarpoides wilcoxensis belongs to Artocarpoides'
- 'Artocarpophyllum belongs to Moraceae'
- 'Artocarpophyllum occidentale belongs to Artocarpophyllum'
- 'Artocarpus belongs to Moraceae'
- 'Artocarpus californica belongs to Artocarpus' according to Knowlton 1893
- 'Artocarpus californica belongs to Artocarpus'
- 'Artocarpus dissecta belongs to Artocarpus' according to Knowlton 1917
- 'Artocarpus dissecta belongs to Artocarpus'
- 'Artocarpus dubia belongs to Artocarpus' according to Hollick 1899
- 'Artocarpus dubia belongs to Artocarpus'
- 'Artocarpus quercoides belongs to Artocarpus'
- 'Artocarpus similis belongs to Artocarpus' according to Knowlton 1917
- 'Artocarpus similis belongs to Artocarpus'
- 'Arundinaria belongs to Gramineae'
- 'Arundinaria macrosperma belongs to Arundinaria' according to Michaux 1803
- 'Arundinaria macrosperma belongs to Arundinaria'
- 'Arundo belongs to Gramineae'
- 'Arundo cretaceus belongs to Arundo' according to Lesquereux 1868
- 'Arundo cretaceus is recombined as Phragmites cretaceus' according to Lesquereux 1874
- 'Arundo cretaceus is recombined as Phragmites cretaceus'
- 'Arundo goepperti belongs to Arundo' according to Münster 1871
- 'Arundo goepperti belongs to Arundo'
- 'Arundo groenlandica belongs to Arundo'
- 'Arundo obtusa belongs to Arundo' according to Lesquereux 1875
- 'Arundo obtusa belongs to Arundo'
- 'Arundo pseudogoepperti belongs to Arundo'
- 'Arundo reperta belongs to Arundo' according to Lesquereux 1875
- 'Arundo reperta belongs to Arundo'
- 'Asclepiadaceae belongs to Gentianales'
- 'Asimina belongs to Anonaceae'
- 'Asimina eocenica belongs to Asimina' according to Lesquereux 1872
- 'Asimina eocenica belongs to Asimina'
- 'Asimina leiocarpa belongs to Asimina' according to Lesquereux 1869
- 'Asimina leiocarpa belongs to Asimina'
- 'Asimina triloba belongs to Asimina' according to Dunal 1817
- 'Asimina triloba belongs to Asimina'
- 'Aspidiophyllum belongs to Platanaceae'
- 'Aspidiophyllum dentatum belongs to Aspidiophyllum' according to Lesquereux 1883
- 'Aspidiophyllum dentatum belongs to Aspidiophyllum'
- 'Aspidiophyllum platanifolium belongs to Aspidiophyllum'
- 'Aspidiophyllum platanifolium belongs to Aspidiophyllum' according to Lesquereux 1883
- 'Aspidiophyllum trilobatum belongs to Aspidiophyllum'
- 'Aspidium belongs to Polypodiaceae'
- 'Aspidium angustipinnatum belongs to Aspidium' according to Fontaine 1889
- 'Aspidium angustipinnatum is recombined as Dryopteris angustipinnata' according to Knowlton 1898
- 'Dryopteris angustipinnata is a subjective synonym of Cladophlebis albertsii'
- 'Aspidium cystopteroides belongs to Aspidium' according to Fontaine 1889
- 'Aspidium cystopteroides is recombined as Dryopteris cystopteroides' according to Knowlton 1898
- 'Aspidium cystopteroides is recombined as Dryopterites cystopteroides'
- 'Aspidium dentatum belongs to Aspidium' according to Fontaine 1889
- 'Aspidium dentatum is recombined as Dryopteris dentata' according to Knowlton 1898
- 'Aspidium dentatum is recombined as Dryopterites dentata'
- 'Aspidium ellipticum belongs to Aspidium' according to Fontaine 1890
- 'Aspidium ellipticum is recombined as Dryopteris elliptica' according to Knowlton 1898
- 'Aspidium ellipticum is recombined as Dryopterites elliptica'
- 'Aspidium fredericksburgense belongs to Aspidium' according to Fontaine 1889
- 'Aspidium fredericksburgense is recombined as Dryopteris fredericksburgensis' according to Knowlton 1898
- 'Dryopteris fredericksburgensis is a subjective synonym of Cladophlebis distans'
- 'Aspidium heterophyllum belongs to Aspidium' according to Fontaine 1889
- 'Aspidium heterophyllum is recombined as Dryopteris heterophylla' according to Knowlton 1898
- 'Dryopteris heterophylla is a subjective synonym of Cladophlebis parva'
- 'Aspidium kennerlyi is recombined as Dryopteris kennerlyi' according to Knowlton 1898
- 'Aspidium kennerlyi is recombined as Dryopteris kennerlyi'
- 'Aspidium kennerlyi belongs to Aspidium' according to Newberry 1863
- 'Aspidium macrocarpum is recombined as Dryopteris macrocarpa' according to Knowlton 1898
- 'Aspidium macrocarpum is recombined as Dryopterites macrocarpa'
- 'Aspidium microcarpum belongs to Aspidium' according to Fontaine 1889
- 'Aspidium microcarpum is recombined as Dryopteris microcarpa' according to Knowlton 1898
- 'Dryopteris microcarpa is a subjective synonym of Dryopterites dentata'
- 'Aspidium montanense belongs to Aspidium' according to Fontaine 1892
- 'Aspidium montanense is recombined as Dryopteris montanensis' according to Knowlton 1898
- 'Aspidium montanense is recombined as Dryopteris montanensis'
- 'Aspidium oblongifolium belongs to Aspidium' according to Fontaine 1889
- 'Aspidium oblongifolium is recombined as Dryopteris oblongifolia' according to Knowlton 1898
- 'Dryopteris oblongifolia is a subjective synonym of Dryopterites virginica'
- 'Aspidium parvifolium belongs to Aspidium' according to Fontaine 1889
- 'Aspidium parvifolium is recombined as Dryopteris parvifolia' according to Knowlton 1898
- 'Dryopteris parvifolia is a subjective synonym of Cladophlebis ungeri'
- 'Aspidium pinnatifidum belongs to Aspidium' according to Fontaine 1890
- 'Aspidium pinnatifidum is recombined as Dryopteris pinnatifida' according to Knowlton 1898
- 'Aspidium pinnatifidum is recombined as Dryopterites pinnatifida'
- 'Aspidium virginicum belongs to Aspidium' according to Fontaine 1889
- 'Aspidium virginicum is recombined as Dryopteris virginica' according to Knowlton 1898
- 'Aspidium virginicum is recombined as Dryopterites virginica'
- 'Aspleniopteris belongs to Polypodiaceae'
- 'Aspleniopteris adiantifolia belongs to Aspleniopteris' according to Fontaine 1889
- 'Aspleniopteris adiantifolia belongs to Aspleniopteris'
- 'Aspleniopteris pinnatifida belongs to Aspleniopteris'
- 'Asplenites belongs to Polypodiaceae'
- 'Asplenites roesserti belongs to Asplenites' according to Schenk 1883
- 'Asplenites roesserti belongs to Asplenites'
- 'Asplenium belongs to Polypodiaceae'
- 'Asplenium was reranked as Sphenopteris (Asplenium) and belongs to Sphenopteris' according to Newberry 1863
- 'Asplenium albertum belongs to Asplenium' according to Dawson 1885
- 'Asplenium albertum belongs to Asplenium'
- 'Asplenium argutulum belongs to Asplenium' according to Heer 1876
- 'Asplenium argutulum is recombined as Cladophlebis argutula' according to Fontaine 1896
- 'Asplenium cecilensis belongs to Asplenium' according to Berry 1911
- 'Asplenium cecilensis belongs to Asplenium'
- 'Asplenium coloradense belongs to Asplenium' according to Knowlton 1917
- 'Asplenium coloradense belongs to Asplenium'
- 'Asplenium crossii belongs to Asplenium' according to Knowlton 1898
- 'Asplenium crossii belongs to Asplenium'
- 'Asplenium dicksonianum belongs to Asplenium'
- 'Asplenium dicksonianum belongs to Asplenium' according to Heer 1874
- 'Asplenium diforme belongs to Asplenium' according to Sternberg 1822
- 'Asplenium diforme is recombined as Comptonia diforme' according to Berry 1896
- 'Asplenium diforme is recombined as Comptonia diforme'
- 'Asplenium dubium belongs to Asplenium' according to Fontaine 1889
- 'Asplenium dubium belongs to Asplenium'
- 'Asplenium eolignitica belongs to Asplenium' according to Berry 1916
- 'Asplenium eolignitica belongs to Asplenium'
- 'Asplenium foersteri belongs to Asplenium' according to Debey and Ettingshausen 1859
- 'Asplenium foersteri belongs to Asplenium'
- 'Asplenium haguei belongs to Asplenium'
- 'Asplenium hurleyensis belongs to Asplenium' according to Berry 1916
- 'Asplenium hurleyensis belongs to Asplenium'
- 'Asplenium iddingsi belongs to Asplenium'
- 'Asplenium jerseyensis belongs to Asplenium' according to Berry 1911
- 'Asplenium jerseyensis belongs to Asplenium'
- 'Asplenium magnum belongs to Asplenium'
- 'Asplenium martinianum belongs to Asplenium' according to Dawson 1885
- 'Asplenium martinianum belongs to Asplenium'
- 'Asplenium neomexicanum belongs to Asplenium' according to Knowlton 1916
- 'Asplenium neomexicanum belongs to Asplenium'
- 'Asplenium niobrara belongs to Asplenium' according to Dawson 1882
- 'Asplenium niobrara belongs to Asplenium'
- 'Asplenium occidentale belongs to Asplenium' according to Knowlton 1917
- 'Asplenium occidentale belongs to Asplenium'
- 'Asplenium primero belongs to Asplenium' according to Knowlton 1917
- 'Asplenium primero belongs to Asplenium'
- 'Asplenium raritanense belongs to Asplenium' according to Berry 1909
- 'Asplenium raritanense belongs to Asplenium'
- 'Asplenium remotidens belongs to Asplenium'
- 'Asplenium spectabile belongs to Asplenium' according to Heer 1876
- 'Asplenium spectabile is recombined as Cladophlebis spectabilis' according to Fontaine 1896
- 'Asplenium spectabile is recombined as Cladophlebis spectabilis'
- 'Asplenium subcretaceum is a subjective synonym of Anemia elongata'
- 'Asplenium tenellum belongs to Asplenium' according to Knowlton 1900
- 'Asplenium tenellum belongs to Asplenium'
- 'Asplenium tenerum belongs to Asplenium' according to Lesquereux 1883
- 'Asplenium tenerum is a subjective synonym of Dennstaedtia americana'
- 'Asplenium wyomingense belongs to Asplenium' according to Knowlton 1900
- 'Asplenium wyomingense belongs to Asplenium'
- 'Aster belongs to Compositae'
- 'Aster florissantia belongs to Aster'
- 'Aster florissantia belongs to Aster' according to Cockerell 1908
- 'Asterocarpus belongs to Pteridophyta'
- 'Asterocarpus lanceolatus belongs to Asterocarpus' according to Göppert 1838
- 'Asterocarpus lanceolatus is recombined as Laccopteris lanceolata' according to Ward 1900
- 'Asterocarpus lanceolatus is recombined as Laccopteris lanceolata'
- 'Asterocarpus penticarpus belongs to Asterocarpus' according to Fontaine 1883
- 'Asterocarpus penticarpus belongs to Asterocarpus'
- 'Asterocarpus platyrachis belongs to Asterocarpus'
- 'Asterocarpus virginiensis belongs to Asterocarpus' according to Fontaine 1883
- 'Asterocarpus virginiensis is a subjective synonym of Asterocarpus falcatus'
- 'Athrotaxis belongs to Taxodieae'
- 'Athrotaxis eolignitica belongs to Athrotaxis' according to Berry 1916
- 'Athrotaxis eolignitica belongs to Athrotaxis'
- 'Athrotaxopsis belongs to Taxodieae'
- 'Athrotaxopsis grandis belongs to Athrotaxopsis'
- 'Athrotaxopsis pachyphylla belongs to Athrotaxopsis' according to Fontaine 1889
- 'Athrotaxopsis pachyphylla is a subjective synonym of Athrotaxopsis grandis'
- 'Athrotaxopsis tenuicaulis belongs to Athrotaxopsis' according to Fontaine 1889
- 'Athrotaxopsis tenuicaulis is a subjective synonym of Athrotaxopsis grandis'
- 'Avicennia belongs to Verbenaceae'
- 'Avicennia eocenica belongs to Avicennia' according to Berry 1916
- 'Avicennia eocenica belongs to Avicennia'
- 'Avicennia nitidaformis belongs to Avicennia' according to Berry 1916
- 'Avicennia nitidaformis belongs to Avicennia'
- 'Azollophyllum belongs to Salviniaceae'
- 'Azollophyllum primaevum belongs to Azollophyllum'
- 'Baiera belongs to Ginkgoaceae'
- 'Baiera brevifolia belongs to Baiera' according to Newberry 1891
- 'Baiera brevifolia is a subjective synonym of Ginkgo sibirica'
- 'Baiera foliosa belongs to Baiera' according to Fontaine 1889
- 'Baiera foliosa belongs to Baiera'
- 'Baiera grandis belongs to Baiera' according to Hollick 1906
- 'Baiera grandis belongs to Baiera'
- 'Baiera incurvata belongs to Baiera' according to Heer 1882
- 'Baiera incurvata belongs to Baiera'
- 'Baiera multifida belongs to Baiera' according to Fontaine 1883
- 'Baiera multifida belongs to Baiera'
- 'Baieropsis is a subjective synonym of Acrostichopteris'
- 'Baieropsis adiantifolia belongs to Baieropsis' according to Fontaine 1889
- 'Baieropsis adiantifolia is recombined as Acrostichopteris adiantifolia' according to Berry 1911
- 'Baieropsis adiantifolia is recombined as Acrostichopteris adiantifolia'
- 'Baieropsis denticulata belongs to Baieropsis' according to Fontaine 1889
- 'Baieropsis denticulata is a subjective synonym of Acrostichopteris cyclopteroides'
- 'Baieropsis expansa is recombined as Acrostichopteris expansa' according to Berry 1911
- 'Baieropsis expansa is recombined as Acrostichopteris expansa'
- 'Baieropsis foliosa belongs to Baieropsis' according to Fontaine 1889
- 'Baieropsis foliosa is a subjective synonym of Acrostichopteris longipennis'
- 'Baieropsis longifolia belongs to Baieropsis' according to Fontaine 1889
- 'Baieropsis longifolia is a subjective synonym of Acrostichopteris pluripartita'
- 'Baieropsis macrophylla belongs to Baieropsis' according to Fontaine 1889
- 'Baieropsis macrophylla is a subjective synonym of Schizaeopsis americana'
- 'Baieropsis pluripartita belongs to Baieropsis' according to Fontaine 1889
- 'Baieropsis pluripartita is recombined as Acrostichopteris pluripartita' according to Berry 1911
- 'Baieropsis pluripartita is recombined as Acrostichopteris pluripartita'
- 'Bambusium belongs to Gramineae'
- 'Bambusium carolinense belongs to Bambusium' according to Fontaine 1883
- 'Bambusium carolinense belongs to Bambusium'
- 'Bambusium carolinense is recombined as Loperia carolinensis' according to Ward 1899
- 'Banisteria belongs to Malpighiaceae'
- 'Banisteria fructuosa belongs to Banisteria' according to Berry 1916
- 'Banisteria fructuosa belongs to Banisteria'
- 'Banisteria pseudolaurifolia belongs to Banisteria' according to Berry 1916
- 'Banisteria pseudolaurifolia belongs to Banisteria'
- 'Banisteria repandifolia belongs to Banisteria' according to Berry 1916
- 'Banisteria repandifolia belongs to Banisteria'
- 'Banisteria wilcoxiana belongs to Banisteria' according to Berry 1916
- 'Banisteria wilcoxiana belongs to Banisteria'
- 'Banksia belongs to Proteaceae'
- 'Banksia puryearensis belongs to Banksia' according to Berry 1916
- 'Banksia puryearensis belongs to Banksia'
- 'Banksia pusilla belongs to Banksia' according to Velenovsky 1883
- 'Banksia pusilla belongs to Banksia'
- 'Banksia tenuifolia belongs to Banksia' according to Berry 1916
- 'Banksia tenuifolia belongs to Banksia'
- 'Banksites belongs to Proteaceae'
- 'Banksites lineatus belongs to Banksites' according to Lesquereux 1883
- 'Banksites lineatus belongs to Banksites'
- 'Banksites saportanus belongs to Banksites' according to Velenovsky 1883
- 'Banksites saportanus belongs to Banksites'
- 'Bauhinia belongs to Leguminosae'
- 'Bauhinia alabamensis belongs to Bauhinia' according to Berry 1910
- 'Bauhinia alabamensis belongs to Bauhinia'
- 'Bauhinia cretacea belongs to Bauhinia' according to Newberry 1886
- 'Bauhinia cretacea belongs to Bauhinia'
- 'Bauhinia gigantea belongs to Bauhinia' according to Newberry 1895
- 'Bauhinia gigantea belongs to Bauhinia'
- 'Bauhinia marylandica belongs to Bauhinia' according to Berry 1908
- 'Bauhinia marylandica belongs to Bauhinia'
- 'Bauhinia pseudocotyledon belongs to Bauhinia' according to Cockerell 1909
- 'Bauhinia pseudocotyledon belongs to Bauhinia'
- 'Bauhinia ripleyensis belongs to Bauhinia' according to Berry 1916
- 'Bauhinia ripleyensis belongs to Bauhinia'
- 'Bennettitaceae belongs to Bennettitales'
- 'Bennettitales belongs to Gymnospermae'
- 'Bennettites belongs to Bennettitaceae'
- 'Bennettites dacotensis belongs to Bennettites' according to McBride 1893
- 'Bennettites dacotensis is recombined as Cycadeoidea dacotensis' according to Ward 1894
- 'Bennettites dacotensis is recombined as Cycadeoidea dacotensis'
- 'Benzoin belongs to Lauraceae'
- 'Benzoin antiquum belongs to Benzoin' according to Heer 1855
- 'Benzoin antiquum belongs to Benzoin'
- 'Berberidaceae belongs to Ranales'
- 'Berberis belongs to Berberidaceae'
- 'Berberis gigantea belongs to Berberis' according to Knowlton 1902
- 'Berberis gigantea belongs to Berberis'
- 'Berberis simplex belongs to Berberis' according to Newberry 1882
- 'Berberis simplex is recombined as Odostemon simplex' according to Cockerell 1908
- 'Berberis simplex is recombined as Odostemon simplex'
- 'Berchemia belongs to Rhamnaceae'
- 'Berchemia multinervis belongs to Berchemia'
- 'Berchemia multinervis belongs to Berchemia' according to Heer 1868
- 'Berchemia parvifolia belongs to Berchemia' according to Lesquereux 1868
- 'Berchemia parvifolia is a subjective synonym of Berchemia multinervis'
- 'Berchemia priscaformis belongs to Berchemia' according to Berry 1916
- 'Berchemia priscaformis belongs to Berchemia'
- 'Betula belongs to Betulaceae'
- 'Betula aequalis belongs to Betula'
- 'Betula alaskana belongs to Betula' according to Lesquereux 1882
- 'Betula alaskana belongs to Betula'
- 'Betula angustifolia belongs to Betula' according to Newberry 1882
- 'Betula angustifolia belongs to Betula'
- 'Betula basiserrata belongs to Betula' according to Ward 1885
- 'Betula basiserrata belongs to Betula'
- 'Betula beatriciana belongs to Betula' according to Lesquereux 1868
- 'Betula beatriciana belongs to Betula'
- 'Betula bendirei belongs to Betula' according to Knowlton 1902
- 'Betula bendirei belongs to Betula'
- 'Betula coryloides belongs to Betula' according to Ward 1885
- 'Betula coryloides belongs to Betula'
- 'Betula dayana belongs to Betula' according to Knowlton 1902
- 'Betula dayana belongs to Betula'
- 'Betula deltoides belongs to Betula' according to Knowlton 1916
- 'Betula deltoides belongs to Betula'
- 'Betula elliptica belongs to Betula' according to Saporta 1861
- 'Betula elliptica belongs to Betula'
- 'Betula fallax belongs to Betula' according to Lesquereux 1888
- 'Betula fallax belongs to Betula'
- 'Betula florissanti belongs to Betula' according to Lesquereux 1883
- 'Betula florissanti belongs to Betula'
- 'Betula goepperti belongs to Betula' according to Lesquereux 1878
- 'Betula goepperti is a subjective synonym of Betula stevensonii'
- 'Betula gracilis belongs to Betula' according to Ludwig 1861
- 'Betula gracilis belongs to Betula'
- 'Betula grandifolia belongs to Betula' according to Ettingshausen 1867
- 'Betula grandifolia belongs to Betula'
- 'Betula heterodonta belongs to Betula' according to Newberry 1882
- 'Betula heterodonta belongs to Betula'
- 'Betula iddingsi belongs to Betula'
- 'Betula lutea belongs to Betula' according to Michaux 1811
- 'Betula lutea belongs to Betula'
- 'Betula macclintockia belongs to Betula' according to Cramer 1868
- 'Betula macclintockia belongs to Betula'
- 'Betula macrophylla belongs to Betula' according to Göppert 1859
- 'Betula macrophylla belongs to Betula'
- 'Betula nigra belongs to Betula'
- 'Betula parcedentata belongs to Betula' according to Lesquereux 1883
- 'Betula parcedentata belongs to Betula'
- 'Betula perantiqua belongs to Betula' according to Dawson 1882
- 'Betula perantiqua belongs to Betula'
- 'Betula prenigra belongs to Betula' according to Berry 1916
- 'Betula prenigra belongs to Betula'
- 'Betula prisca belongs to Betula' according to Ettingshausen 1851
- 'Betula prisca belongs to Betula'
- 'Betula pseudofontinalis belongs to Betula' according to Berry 1907
- 'Betula pseudofontinalis belongs to Betula'
- 'Betula schimperi belongs to Betula' according to Lesquereux 1888
- 'Betula schimperi belongs to Betula'
- 'Betula stevensonii belongs to Betula'
- 'Betula truncata belongs to Betula' according to Lesquereux 1883
- 'Betula truncata belongs to Betula'
- 'Betula vogdesii belongs to Betula' according to Lesquereux 1875
- 'Betula vogdesii belongs to Betula'
- 'Betulaceae belongs to Fagales'
- 'Betulites belongs to Betulaceae'
- 'Betulites denticulata belongs to Betulites' according to Heer 1866
- 'Betulites denticulata belongs to Betulites'
- 'Betulites populifolius belongs to Betulites' according to Lesquereux 1891
- 'Betulites populifolius belongs to Betulites'
- 'Betulites rugosus belongs to Betulites'
- 'Betulites rugosus belongs to Betulites' according to Lesquereux 1891
- 'Betulites snowii belongs to Betulites' according to Lesquereux 1891
- 'Betulites snowii belongs to Betulites'
- 'Betulites westii belongs to Betulites' according to Lesquereux 1891
- 'Betulites westii belongs to Betulites'
- 'Betuloxylon belongs to Betulaceae'
- 'Bicarpellites abbreviatus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites abbreviatus belongs to Bicarpellites'
- 'Bicarpellites attenuatus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites attenuatus belongs to Bicarpellites'
- 'Bicarpellites bicarinatus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites bicarinatus belongs to Bicarpellites'
- 'Bicarpellites brevis belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites brevis belongs to Bicarpellites'
- 'Bicarpellites carinatus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites carinatus belongs to Bicarpellites'
- 'Bicarpellites crassus belongs to Bicarpellites'
- 'Bicarpellites crassus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites crateriformis belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites crateriformis belongs to Bicarpellites'
- 'Bicarpellites inequalis belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites inequalis belongs to Bicarpellites'
- 'Bicarpellites knowltoni belongs to Bicarpellites' according to Perkins 1904
- 'Bicarpellites knowltoni belongs to Bicarpellites'
- 'Bicarpellites lanceolatus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites lanceolatus belongs to Bicarpellites'
- 'Bicarpellites latus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites latus belongs to Bicarpellites'
- 'Bicarpellites major belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites major belongs to Bicarpellites'
- 'Bicarpellites medius belongs to Bicarpellites'
- 'Bicarpellites medius belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites minimus belongs to Bicarpellites' according to Perkins 1904
- 'Bicarpellites minimus belongs to Bicarpellites'
- 'Bicarpellites obesus belongs to Bicarpellites' according to Perkins 1904
- 'Bicarpellites obesus belongs to Bicarpellites'
- 'Bicarpellites ovatus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites ovatus belongs to Bicarpellites'
- 'Bicarpellites papillosus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites papillosus belongs to Bicarpellites'
- 'Bicarpellites parvus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites parvus belongs to Bicarpellites'
- 'Bicarpellites quadrangulatus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites quadrangulatus belongs to Bicarpellites'
- 'Bicarpellites rotundus belongs to Bicarpellites' according to Perkins 1904
- 'Bicarpellites rotundus belongs to Bicarpellites'
- 'Bicarpellites rugosus belongs to Bicarpellites'
- 'Bicarpellites rugosus belongs to Bicarpellites' according to Perkins 1904
- 'Bicarpellites solidus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites solidus belongs to Bicarpellites'
- 'Bicarpellites sulcatus belongs to Bicarpellites' according to Perkins 1906
- 'Bicarpellites sulcatus belongs to Bicarpellites'
- 'Bignoniaceae belongs to Tubiflorae'
- 'Blechnum belongs to Polypodiaceae'
- 'Blechnum goepperti belongs to Blechnum' according to Ettingshausen 1865
- 'Blechnum goepperti belongs to Blechnum'
- 'Bombacaceae [misspelled as Bombaceae] belongs to Malvales'
- 'Bombacites belongs to Bombaceae'
- 'Bombacites formosus belongs to Bombacites'
- 'Bombacites wilcoxianus belongs to Bombacites' according to Berry 1916
- 'Bombacites wilcoxianus belongs to Bombacites'
- 'Bombax belongs to Bombaceae'
- 'Bombax virginiensis belongs to Bombax'
- 'Bombax virginiensis belongs to Bombax' according to Fontaine 1889
- 'Boraginaceae belongs to Polemoniales'
- 'Brachyoxylon belongs to Brachyphyllaceae'
- 'Brachyoxylon notabile belongs to Brachyoxylon'
- 'Brachyphyllaceae belongs to Coniferales'
- 'Brachyphyllum belongs to Brachyphyllaceae'
- 'Brachyphyllum crassicaule belongs to Brachyphyllum'
- 'Brachyphyllum macrocarpum belongs to Brachyphyllum'
- 'Brachyphyllum mamillare belongs to Brachyphyllum'
- 'Brachyphyllum muensteri is recombined as Cheirolepis muensteri'
- 'Brachyphyllum parceramosum belongs to Brachyphyllum' according to Fontaine 1890
- 'Brachyphyllum parceramosum belongs to Brachyphyllum'
- 'Brachyphyllum texense belongs to Brachyphyllum' according to Fontaine 1893
- 'Brachyphyllum texense is a subjective synonym of Brachyphyllum parceramosum'
- 'Brachyphyllum yorkense belongs to Brachyphyllum' according to Fontaine 1900
- 'Brachyphyllum yorkense belongs to Brachyphyllum'
- 'Brachytheiaceae belongs to Bryales'
- 'Brandonia globulus belongs to Brandonia'
- 'Brasenia belongs to Nymphaeaceae'
- 'Brasenia antiqua belongs to Brasenia' according to Newberry 1882
- 'Brasenia antiqua belongs to Brasenia'
- 'Brasenia antiqua belongs to Brasenia' according to Dawson 1885
- 'Brasenia antiqua is replaced by Nelumbo dawsoni'
- 'Brasenia peltata belongs to Brasenia' according to Pursh 1813
- 'Brasenia peltata is a subjective synonym of Brasenia purpurea'
- 'Brasenia purpurea belongs to Brasenia' according to Michaux 1850
- 'Bromelia belongs to Bromeliaceae'
- 'Bromelia tenuifolia belongs to Bromelia' according to Lesquereux 1891
- 'Bromelia tenuifolia belongs to Bromelia'
- 'Bromeliaceae belongs to Xyridales'
- 'Bromus belongs to Gramineae'
- 'Bromus ciliatus belongs to Bromus'
- 'Brunswickia belongs to Coniferales'
- 'Brunswickia dubia belongs to Brunswickia'
- 'Bryaceae belongs to Bryales'
- 'Bryales belongs to Musci'
- 'Bryophyta belongs to Plantae'
- 'Bryum belongs to Bryaceae'
- 'Buettneria belongs to Buettneriaceae'
- 'Buettneria perplexans belongs to Buettneria' according to Cockerell 1908
- 'Buettneria perplexans belongs to Buettneria'
- 'Buettnerieae was reranked as the family Buettneriaceae and belongs to Malvales'
- 'Bumelia belongs to Sapotaceae'
- 'Bumelia florissanti belongs to Bumelia'
- 'Bumelia grenadensis belongs to Bumelia' according to Berry 1916
- 'Bumelia grenadensis belongs to Bumelia'
- 'Bumelia hurleyensis belongs to Bumelia' according to Berry 1916
- 'Bumelia hurleyensis belongs to Bumelia'
- 'Bumelia oklahomensis belongs to Bumelia' according to Berry 1918
- 'Bumelia oklahomensis belongs to Bumelia'
- 'Bumelia praenuntia belongs to Bumelia' according to Berry 1914
- 'Bumelia praenuntia belongs to Bumelia'
- 'Bumelia preangustifolia belongs to Bumelia' according to Berry 1916
- 'Bumelia preangustifolia belongs to Bumelia'
- 'Bumelia pseudohorrida belongs to Bumelia' according to Berry 1916
- 'Bumelia pseudohorrida belongs to Bumelia'
- 'Bumelia pseudolanguinosa belongs to Bumelia' according to Hollick 1906
- 'Bumelia pseudolanguinosa belongs to Bumelia'
- 'Bumelia pseudotenax belongs to Bumelia' according to Berry 1916
- 'Bumelia pseudotenax belongs to Bumelia'
- 'Bumelia rhomboidea belongs to Bumelia' according to Lesquereux 1891
- 'Bumelia rhomboidea belongs to Bumelia'
- 'Bumelia wilcoxiana belongs to Bumelia' according to Berry 1916
- 'Bumelia wilcoxiana belongs to Bumelia'
- 'Cabomba belongs to Nymphaeaceae'
- 'Cabomba gracilis belongs to Cabomba' according to Newberry 1882
- 'Cabomba gracilis belongs to Cabomba'
- 'Cabomba grandis belongs to Cabomba' according to Newberry 1883
- 'Cabomba grandis is a subjective synonym of Cabomba inermis'
- 'Caenomyces belongs to Laboulbiliaceae'
- 'Caenomyces annulata belongs to Caenomyces'
- 'Caenomyces annulata belongs to Caenomyces' according to Berry 1916
- 'Caenomyces cassiae belongs to Caenomyces' according to Berry 1916
- 'Caenomyces cassiae belongs to Caenomyces'
- 'Caenomyces laurinea belongs to Caenomyces'
- 'Caenomyces pestalozzites belongs to Caenomyces' according to Berry 1916
- 'Caenomyces pestalozzites belongs to Caenomyces'
- 'Caenomyces sapotae belongs to Caenomyces' according to Berry 1916
- 'Caenomyces sapotae belongs to Caenomyces'
- 'Caesalpinia belongs to Caesalpiniaceae'
- 'Caesalpinia citronellensis belongs to Caesalpinia' according to Berry 1916
- 'Caesalpinia citronellensis belongs to Caesalpinia'
- 'Caesalpinia cookiana belongs to Caesalpinia' according to Hollick 1895
- 'Caesalpinia cookiana belongs to Caesalpinia'
- 'Caesalpinia linearis belongs to Caesalpinia' according to Lesquereux 1873
- 'Caesalpinia linearis is recombined as Mimosites linearis' according to Knowlton 1898
- 'Caesalpinia linearis is recombined as Mimosites linearis'
- 'Caesalpinia middendorfensis belongs to Caesalpinia'
- 'Caesalpinia raritanensis belongs to Caesalpinia' according to Berry 1909
- 'Caesalpinia raritanensis belongs to Caesalpinia'
- 'Caesalpinia wilcoxiana belongs to Caesalpinia'
- 'Caesalpinia wilcoxiana belongs to Caesalpinia' according to Berry 1916
- 'Caesalpiniaceae belongs to Rosales'
- 'Caesalpinites belongs to Caesalpiniaceae'
- 'Caesalpinites aculeatafolia belongs to Caesalpinites' according to Berry 1916
- 'Caesalpinites aculeatafolia belongs to Caesalpinites'
- 'Caesalpinites bentonensis belongs to Caesalpinites' according to Berry 1916
- 'Caesalpinites bentonensis belongs to Caesalpinites'
- 'Caesalpinites mississippiensis belongs to Caesalpinites' according to Berry 1916
- 'Caesalpinites mississippiensis belongs to Caesalpinites'
- 'Caesalpinites pinsonensis belongs to Caesalpinites' according to Berry 1916
- 'Caesalpinites pinsonensis belongs to Caesalpinites'
- 'Calamites arenaceus belongs to Calamites' according to Emmons 1856
- 'Calamites arenaceus is a subjective synonym of Equisetum rogersii'
- 'Calamites disjunctus is a subjective synonym of Equisetum rogersii'
- 'Calamites planicostatus belongs to Calamites' according to Rogers 1843
- 'Calamites planicostatus is recombined as Schizoneura planicostata' according to Fontaine 1883
- 'Calamites planicostatus is recombined as Schizoneura planicostata'
- 'Calamites punctatus belongs to Calamites' according to Emmons 1857
- 'Calamites punctatus is a subjective synonym of Sphenozamites rogersianus'
- 'Calamites rogersii belongs to Calamites' according to Bunbury 1851
- 'Calamites rogersii is recombined as Equisetum rogersii' according to Schimper 1869
- 'Calamites rogersii is recombined as Equisetum rogersii'
- 'Calamopsis belongs to Arecaceae'
- 'Calamopsis danai belongs to Calamopsis' according to Lesquereux 1866
- 'Calamopsis danai is recombined as Chamaedorea danai' according to Berry 1916
- 'Calamopsis danai is recombined as Chamaedorea danai'
- 'Callistemophyllum belongs to Myrtaceae'
- 'Callistemophyllum heerii belongs to Callistemophyllum' according to Ettingshausen 1867
- 'Callistemophyllum heerii belongs to Callistemophyllum'
- 'Callistemophyllum latum belongs to Callistemophyllum' according to Dawson 1889
- 'Callistemophyllum latum belongs to Callistemophyllum'
- 'Callitris belongs to Cupressineae'
- 'Calycites alatus belongs to Calycites' according to Hollick 1904
- 'Calycites alatus belongs to Calycites'
- 'Calycites davillaformis belongs to Calycites'
- 'Calycites davillaformis belongs to Calycites' according to Berry 1916
- 'Calycites diospyriformis belongs to Calycites' according to Newberry 1895
- 'Calycites diospyriformis belongs to Calycites'
- 'Calycites hexaphylla belongs to Calycites' according to Lesquereux 1872
- 'Calycites hexaphylla is recombined as Diospyros hexaphylla'
- 'Calycites middendorfensis belongs to Calycites'
- 'Calycites obovatus belongs to Calycites' according to Hollick 1906
- 'Calycites obovatus belongs to Calycites'
- 'Calycites ostryaformis belongs to Calycites' according to Berry 1916
- 'Calycites ostryaformis belongs to Calycites'
- 'Calycites parvus belongs to Calycites' according to Newberry 1895
- 'Calycites parvus belongs to Calycites'
- 'Calycites polysepala belongs to Calycites' according to Newberry 1868
- 'Calycites polysepala belongs to Calycites'
- 'Calycites sexpartitus belongs to Calycites' according to Berry 1919
- 'Calycites sexpartitus belongs to Calycites'
- 'Calyptranthes belongs to Myrtaceae'
- 'Calyptranthes eocenica belongs to Calyptranthes' according to Berry 1916
- 'Calyptranthes eocenica belongs to Calyptranthes'
- 'Campanulales belongs to Dicotyledones'
- 'Camptopteris platyphylla belongs to Camptopteris' according to Göppert 1846
- 'Camptopteris platyphylla is recombined as Clathropteris platyphylla' according to Brongniart 1849
- 'Camptopteris platyphylla is recombined as Clathropteris platyphylla'
- 'Canavalia belongs to Caesalpiniaceae'
- 'Canavalia acuminata belongs to Canavalia' according to Berry 1916
- 'Canavalia acuminata belongs to Canavalia'
- 'Canavalia eocenica belongs to Canavalia' according to Berry 1916
- 'Canavalia eocenica belongs to Canavalia'
- 'Cancellophycus belongs to Algae'
- 'Cancellophycus rhombicum belongs to Cancellophycus' according to Ulrich 1904
- 'Cancellophycus rhombicum belongs to Cancellophycus'
- 'Canna belongs to Cannaceae'
- 'Canna eocenica belongs to Canna' according to Berry 1916
- 'Canna eocenica belongs to Canna'
- 'Canna magnifolia belongs to Canna' according to Knowlton 1917
- 'Canna magnifolia belongs to Canna'
- 'Cannaceae belongs to Scitaminales'
- 'Capparidaceae belongs to Papaverales'
- 'Capparis belongs to Capparidaceae'
- 'Capparites belongs to Capparidaceae'
- 'Capparites cynophylloides belongs to Capparites'
- 'Capparites orbicularis belongs to Capparites' according to Berry 1919
- 'Capparites orbicularis belongs to Capparites'
- 'Caprifoliaceae belongs to Rubiales'
- 'Carapa belongs to Meliaceae'
- 'Carapa eolignitica belongs to Carapa'
- 'Carapa eolignitica belongs to Carapa' according to Berry 1916
- 'Carapa xylocarpoides belongs to Carapa' according to Berry 1917
- 'Carapa xylocarpoides belongs to Carapa'
- 'Carduus belongs to Compositae'
- 'Carduus florissantensis belongs to Carduus' according to Cockerell 1906
- 'Carduus florissantensis is a subjective synonym of Lomatites hakeaefolia'
- 'Carex belongs to Cyperaceae'
- 'Carex aquatilis belongs to Carex' according to Wahlenberg 1803
- 'Carex aquatilis belongs to Carex'
- 'Carex berthoudi belongs to Carex' according to Lesquereux 1872
- 'Carex berthoudi belongs to Carex'
- 'Carex burrardiana belongs to Carex' according to Penhallow 1895
- 'Carex burrardiana belongs to Carex'
- 'Carex clarkii belongs to Carex'
- 'Carex magellanica belongs to Carex' according to Lamarck 1792
- 'Carex magellanica belongs to Carex'
- 'Carex servata belongs to Carex' according to Heer 1869
- 'Carex servata belongs to Carex'
- 'Carex utriculata belongs to Carex' according to Boott 1839
- 'Carex utriculata belongs to Carex'
- 'Carex vancouverensis belongs to Carex' according to Penhallow 1895
- 'Carex vancouverensis belongs to Carex'
- 'Carpinoxylon belongs to Betulaceae'
- 'Carpinoxylon pfefferi belongs to Carpinoxylon' according to Platen 1907
- 'Carpinoxylon pfefferi belongs to Carpinoxylon'
- 'Carpinus belongs to Betulaceae'
- 'Carpinus attenuata belongs to Carpinus' according to Lesquereux 1883
- 'Carpinus attenuata belongs to Carpinus'
- 'Carpinus betuloides belongs to Carpinus' according to Unger 1845
- 'Carpinus betuloides belongs to Carpinus'
- 'Carpinus caroliniana belongs to Carpinus' according to Walter 1788
- 'Carpinus caroliniana belongs to Carpinus'
- 'Carpinus fraterna belongs to Carpinus' according to Lesquereux 1883
- 'Carpinus fraterna belongs to Carpinus'
- 'Carpinus grandis belongs to Carpinus'
- 'Carpinus grandis belongs to Carpinus' according to Unger 1845
- 'Carpinus pseudocaroliniana belongs to Carpinus' according to Hollick 1906
- 'Carpinus pseudocaroliniana belongs to Carpinus'
- 'Carpinus virginiana belongs to Carpinus' according to Miller 1768
- 'Carpinus virginiana is recombined as Ostrya virginiana' according to Koch 1873
- 'Carpinus virginiana is recombined as Ostrya virginiana'
- 'Carpites alatus belongs to Carpites' according to Knowlton 1916
- 'Carpites alatus belongs to Carpites'
- 'Carpites baueri belongs to Carpites' according to Knowlton 1916
- 'Carpites baueri belongs to Carpites'
- 'Carpites bursaeformis belongs to Carpites' according to Lesquereux 1878
- 'Carpites bursaeformis belongs to Carpites'
- 'Carpites coffeaeformis belongs to Carpites' according to Lesquereux 1878
- 'Carpites coffeaeformis belongs to Carpites'
- 'Carpites coniger belongs to Carpites' according to Lesquereux 1891
- 'Carpites coniger belongs to Carpites'
- 'Carpites cordiformis belongs to Carpites' according to Lesquereux 1891
- 'Carpites cordiformis belongs to Carpites'
- 'Carpites costatus belongs to Carpites' according to Lesquereux 1878
- 'Carpites costatus belongs to Carpites'
- 'Carpites dakotensis belongs to Carpites'
- 'Carpites fragariaeformis belongs to Carpites' according to Lesquereux 1888
- 'Carpites fragariaeformis belongs to Carpites'
- 'Carpites gemmaceus belongs to Carpites' according to Lesquereux 1883
- 'Carpites gemmaceus belongs to Carpites'
- 'Carpites glumaeformis belongs to Carpites' according to Lesquereux 1878
- 'Carpites glumaeformis belongs to Carpites'
- 'Carpites inequalis belongs to Carpites' according to Perkins 1904
- 'Carpites inequalis belongs to Carpites'
- 'Carpites judithae belongs to Carpites' according to Knowlton 1916
- 'Carpites judithae belongs to Carpites'
- 'Carpites laurineus belongs to Carpites'
- 'Carpites laurineus belongs to Carpites' according to Lesquereux 1878
- 'Carpites ligatus belongs to Carpites' according to Lesquereux 1878
- 'Carpites ligatus belongs to Carpites'
- 'Carpites liriophylli belongs to Carpites' according to Lesquereux 1883
- 'Carpites liriophylli belongs to Carpites'
- 'Carpites milioides belongs to Carpites' according to Lesquereux 1883
- 'Carpites milioides belongs to Carpites'
- 'Carpites minutulus belongs to Carpites' according to Lesquereux 1878
- 'Carpites minutulus belongs to Carpites'
- 'Carpites mitratus belongs to Carpites' according to Lesquereux 1878
- 'Carpites mitratus belongs to Carpites'
- 'Carpites obovatus belongs to Carpites' according to Lesquereux 1891
- 'Carpites obovatus belongs to Carpites'
- 'Carpites ovalis belongs to Carpites' according to Perkins 1904
- 'Carpites ovalis belongs to Carpites'
- 'Carpites oviformis belongs to Carpites' according to Lesquereux 1878
- 'Carpites oviformis belongs to Carpites'
- 'Carpites pealei belongs to Carpites' according to Lesquereux 1878
- 'Carpites pealei belongs to Carpites'
- 'Carpites pedunculatus belongs to Carpites'
- 'Carpites pruni belongs to Carpites' according to Knowlton 1916
- 'Carpites pruni belongs to Carpites'
- 'Carpites rhomboidalis belongs to Carpites' according to Lesquereux 1878
- 'Carpites rhomboidalis belongs to Carpites'
- 'Carpites triangulosus belongs to Carpites' according to Lesquereux 1878
- 'Carpites triangulosus belongs to Carpites'
- 'Carpites trigonus belongs to Carpites' according to Perkins 1904
- 'Carpites trigonus belongs to Carpites'
- 'Carpites utahensis belongs to Carpites' according to Lesquereux 1878
- 'Carpites utahensis belongs to Carpites'
- 'Carpites valvatus belongs to Carpites' according to Lesquereux 1878
- 'Carpites valvatus belongs to Carpites'
- 'Carpites viburni belongs to Carpites' according to Lesquereux 1875
- 'Carpites viburni belongs to Carpites'
- 'Carpolithes (Zamites) meridionalis belongs to Carpolithes (Zamites)'
- 'Carpolithes (Zamites) meridionalis belongs to Carpolithes (Zamites)' according to Dawson 1893
- 'Carpolithes arachioides belongs to Carpolithes' according to Lesquereux 1872
- 'Carpolithes arachioides is recombined as Leguminosites arachioides' according to Lesquereux 1878
- 'Carpolithes arachioides is recombined as Leguminosites arachioides'
- 'Carpolithes brandoniana belongs to Carpolithes' according to Lesquereux 1861
- 'Carpolithes brandoniana belongs to Carpolithes'
- 'Carpolithes brandoniana elongata belongs to Carpolithes brandoniana' according to Lesquereux 1861
- 'Carpolithes brandoniana elongata is recombined as Carpolithes elongatus' according to Perkins 1904
- 'Carpolithes brandoniana elongata is recombined as Glossocarpellites elongatus' according to Perkins 1905
- 'Carpolithes brandoniana elongata is recombined as Glossocarpellites elongatus'
- 'Carpolithes brandoniana obtusa belongs to Carpolithes brandoniana' according to Lesquereux 1861
- 'Carpolithes brandoniana obtusa is recombined as Carpolithes obtusus' according to Perkins 1904
- 'Carpolithes brandoniana obtusa is recombined as Glossocarpellites obtusus' according to Perkins 1905
- 'Carpolithes brandoniana obtusa is recombined as Glossocarpellites obtusus'
- 'Carpolithes bucklandii belongs to Carpolithes' according to Lindley and Hutton 1836
- 'Carpolithes bucklandii belongs to Carpolithes'
- 'Carpolithes bursaeformis belongs to Carpolithes' according to Lesquereux 1861
- 'Carpolithes bursaeformis is recombined as Prunoides bursaeformis' according to Perkins 1904
- 'Carpolithes bursaeformis is recombined as Prunoides bursaeformis'
- 'Carpolithes cocculoides belongs to Carpolithes' according to Heer 1869
- 'Carpolithes cocculoides is recombined as Carpites cocculoides' according to Lesquereux 1878
- 'Carpolithes cocculoides is recombined as Carpites cocculoides'
- 'Carpolithes compositus belongs to Carpolithes' according to Lesquereux 1871
- 'Carpolithes compositus is recombined as Palmocarpon compositum' according to Lesquereux 1878
- 'Carpolithes compositus is recombined as Palmocarpon compositum'
- 'Carpolithes dentatus belongs to Carpolithes' according to Penhallow 1890
- 'Carpolithes dentatus belongs to Carpolithes'
- 'Carpolithes emarginatus belongs to Carpolithes' according to Perkins 1904
- 'Carpolithes emarginatus belongs to Carpolithes'
- 'Carpolithes falcatus belongs to Carpolithes' according to Lesquereux 1872
- 'Carpolithes falcatus belongs to Carpolithes'
- 'Carpolithes fissilis belongs to Carpolithes' according to Lesquereux 1861
- 'Carpolithes fissilis is recombined as Tricarpellites fissilis' according to Perkins 1904
- 'Carpolithes fissilis is recombined as Tricarpellites fissilis'
- 'Carpolithes grandis belongs to Carpolithes' according to Perkins 1904
- 'Carpolithes grandis is recombined as Glossocarpellites grandis' according to Perkins 1906
- 'Carpolithes grayana belongs to Carpolithes' according to Lesquereux 1861
- 'Carpolithes grayana is recombined as Bicarpellites grayana'
- 'Carpolithes grayana is recombined as Bicarpellites grayana' according to Perkins 1904
- 'Carpolithes hitchcockii belongs to Carpolithes' according to Perkins 1904
- 'Carpolithes hitchcockii belongs to Carpolithes'
- 'Carpolithes horridus is recombined as Antholithes horridus'
- 'Carpolithes irregularis belongs to Carpolithes' according to Lesquereux 1861
- 'Carpolithes irregularis belongs to Carpolithes'
- 'Carpolithes lescurii belongs to Carpolithes' according to Hitchcock 1862
- 'Carpolithes lescurii is recombined as Nyssa lescurii' according to Perkins 1904
- 'Carpolithes macrophyllus belongs to Carpolithes' according to Cockerell 1911
- 'Carpolithes macrophyllus belongs to Carpolithes'
- 'Carpolithes mexicanus belongs to Carpolithes' according to Lesquereux 1871
- 'Carpolithes mexicanus is recombined as Palmocarpon mexicanum' according to Lesquereux 1878
- 'Carpolithes mexicanus is recombined as Palmocarpon mexicanum'
- 'Carpolithes mucronatus belongs to Carpolithes' according to Perkins 1904
- 'Carpolithes mucronatus belongs to Carpolithes'
- 'Carpolithes osseus belongs to Carpolithes' according to Lesquereux 1872
- 'Carpolithes osseus belongs to Carpolithes'
- 'Carpolithes ovatus belongs to Carpolithes' according to Perkins 1904
- 'Carpolithes ovatus belongs to Carpolithes'
- 'Carpolithes palmarum is recombined as Palmocarpon palmarum'
- 'Carpolithes palmarum belongs to Carpolithes' according to Lesquereux 1871
- 'Carpolithes palmarum is recombined as Palmocarpon palmarum' according to Knowlton 1898
- 'Carpolithes parvus is recombined as Glossocarpellites parvus'
- 'Carpolithes parvus belongs to Carpolithes' according to Perkins 1904
- 'Carpolithes parvus is recombined as Glossocarpellites parvus' according to Perkins 1905
- 'Carpolithes seminulum belongs to Carpolithes' according to Heer 1868
- 'Carpolithes seminulum belongs to Carpolithes'
- 'Carpolithes simplex belongs to Carpolithes' according to Perkins 1904
- 'Carpolithes simplex belongs to Carpolithes'
- 'Carpolithes solidus belongs to Carpolithes' according to Perkins 1904
- 'Carpolithes solidus belongs to Carpolithes'
- 'Carpolithes spinosus belongs to Carpolithes' according to Newberry 1882
- 'Carpolithes spinosus belongs to Carpolithes'
- 'Carpolithes spiralis belongs to Carpolithes' according to Lesquereux 1871
- 'Carpolithes spiralis is recombined as Carpites spiralis' according to Lesquereux 1878
- 'Carpolithes spiralis is recombined as Carpites spiralis'
- 'Carpolithes tiliaceus is recombined as Carpites tiliaceus'
- 'Carpolithes tiliaceus belongs to Carpolithes' according to Heer 1869
- 'Carpolithes tiliaceus is recombined as Carpites tiliaceus' according to Lesquereux 1891
- 'Carpolithes vermontanus belongs to Carpolithes'
- 'Carpolithes vermontanus belongs to Carpolithes' according to Perkins 1904
- 'Carpolithus agglomeratus belongs to Carpolithus' according to Fontaine 1889
- 'Carpolithus agglomeratus belongs to Carpolithus'
- 'Carpolithus barrensis belongs to Carpolithus' according to Ward 1899
- 'Carpolithus barrensis belongs to Carpolithus'
- 'Carpolithus brookensis belongs to Carpolithus' according to Fontaine 1889
- 'Carpolithus brookensis belongs to Carpolithus'
- 'Carpolithus cliffwoodensis belongs to Carpolithus' according to Berry 1903
- 'Carpolithus cliffwoodensis belongs to Carpolithus'
- 'Carpolithus conjugatus belongs to Carpolithus'
- 'Carpolithus conjugatus belongs to Carpolithus' according to Fontaine 1889
- 'Carpolithus curvatus belongs to Carpolithus' according to Fontaine 1889
- 'Carpolithus curvatus belongs to Carpolithus'
- 'Carpolithus dictyolomoides belongs to Carpolithus' according to Berry 1916
- 'Carpolithus dictyolomoides belongs to Carpolithus'
- 'Carpolithus douglasensis belongs to Carpolithus' according to Fontaine 1905
- 'Carpolithus douglasensis belongs to Carpolithus'
- 'Carpolithus drupaeformis belongs to Carpolithus' according to Hollick 1897
- 'Carpolithus drupaeformis belongs to Carpolithus'
- 'Carpolithus dubius belongs to Carpolithus' according to Berry 1903
- 'Carpolithus dubius is a subjective synonym of Carpolithus juglandiformis'
- 'Carpolithus elongatus belongs to Carpolithus' according to Fontaine 1905
- 'Carpolithus elongatus belongs to Carpolithus'
- 'Carpolithus euonymoides belongs to Carpolithus' according to Hollick 1906
- 'Carpolithus euonymoides belongs to Carpolithus'
- 'Carpolithus fasciculatus belongs to Carpolithus' according to Fontaine 1889
- 'Carpolithus fasciculatus belongs to Carpolithus'
- 'Carpolithus floribundus belongs to Carpolithus' according to Newberry 1895
- 'Carpolithus floribundus belongs to Carpolithus'
- 'Carpolithus foenarius belongs to Carpolithus' according to Ward 1899
- 'Carpolithus foenarius belongs to Carpolithus'
- 'Carpolithus geminatus belongs to Carpolithus' according to Fontaine 1889
- 'Carpolithus geminatus belongs to Carpolithus'
- 'Carpolithus grenadensis belongs to Carpolithus'
- 'Carpolithus grenadensis belongs to Carpolithus' according to Berry 1916
- 'Carpolithus harveyi belongs to Carpolithus' according to Fontaine 1893
- 'Carpolithus harveyi belongs to Carpolithus'
- 'Carpolithus henryensis belongs to Carpolithus' according to Berry 1916
- 'Carpolithus henryensis belongs to Carpolithus'
- 'Carpolithus hirsutus belongs to Carpolithus' according to Newberry 1895
- 'Carpolithus hirsutus belongs to Carpolithus'
- 'Carpolithus hyoseritiformis belongs to Carpolithus' according to Berry 1916
- 'Carpolithus hyoseritiformis belongs to Carpolithus'
- 'Carpolithus juglandiformis belongs to Carpolithus' according to Berry 1903
- 'Carpolithus juglandiformis belongs to Carpolithus'
- 'Carpolithus latus belongs to Carpolithus' according to Fontaine 1889
- 'Carpolithus latus belongs to Carpolithus'
- 'Carpolithus lineatus belongs to Carpolithus' according to Newberry 1868
- 'Carpolithus lineatus is recombined as Carpites lineatus' according to Lesquereux 1878
- 'Carpolithus lineatus is recombined as Carpites lineatus'
- 'Carpolithus mattewanensis belongs to Carpolithus'
- 'Carpolithus mattewanensis belongs to Carpolithus' according to Berry 1905
- 'Carpolithus montiumnigrorum belongs to Carpolithus' according to Ward 1899
- 'Carpolithus montiumnigrorum belongs to Carpolithus'
- 'Carpolithus najasoides belongs to Carpolithus' according to Berry 1918
- 'Carpolithus najasoides belongs to Carpolithus'
- 'Carpolithus obovatus belongs to Carpolithus' according to Fontaine 1873
- 'Carpolithus obovatus belongs to Carpolithus'
- 'Carpolithus olallensis belongs to Carpolithus' according to Ward 1905
- 'Carpolithus olallensis belongs to Carpolithus'
- 'Carpolithus oregonensis belongs to Carpolithus' according to Fontaine 1905
- 'Carpolithus oregonensis belongs to Carpolithus'
- 'Carpolithus ostryaeformis belongs to Carpolithus' according to Berry 1905
- 'Carpolithus ostryaeformis belongs to Carpolithus'
- 'Carpolithus ovaeformis belongs to Carpolithus' according to Newberry 1895
- 'Carpolithus ovaeformis belongs to Carpolithus'
- 'Carpolithus pilocarpoides belongs to Carpolithus'
- 'Carpolithus pilocarpoides belongs to Carpolithus' according to Berry 1916
- 'Carpolithus prangosoides belongs to Carpolithus' according to Berry 1916
- 'Carpolithus prangosoides belongs to Carpolithus'
- 'Carpolithus proteoides belongs to Carpolithus' according to Berry 1916
- 'Carpolithus proteoides belongs to Carpolithus'
- 'Carpolithus puryearensis belongs to Carpolithus' according to Berry 1916
- 'Carpolithus puryearensis belongs to Carpolithus'
- 'Carpolithus septloculus belongs to Carpolithus' according to Berry 1916
- 'Carpolithus septloculus belongs to Carpolithus'
- 'Carpolithus sessilis belongs to Carpolithus' according to Fontaine 1889
- 'Carpolithus sessilis belongs to Carpolithus'
- 'Carpolithus sophorites belongs to Carpolithus' according to Berry 1916
- 'Carpolithus sophorites belongs to Carpolithus'
- 'Carpolithus storrsii belongs to Carpolithus' according to Fontaine 1896
- 'Carpolithus tennesseensis belongs to Carpolithus' according to Berry 1916
- 'Carpolithus tennesseensis belongs to Carpolithus'
- 'Carpolithus ternatus belongs to Carpolithus' according to Fontaine 1889
- 'Carpolithus ternatus belongs to Carpolithus'
- 'Carpolithus tuscaloosensis belongs to Carpolithus' according to Berry 1919
- 'Carpolithus tuscaloosensis belongs to Carpolithus'
- 'Carpolithus vaccinioides belongs to Carpolithus' according to Hollick 1906
- 'Carpolithus vaccinioides belongs to Carpolithus'
- 'Carpolithus virginiensis belongs to Carpolithus' according to Fontaine 1889
- 'Carpolithus virginiensis belongs to Carpolithus'
- 'Carpolithus woodbridgensis belongs to Carpolithus' according to Newberry 1895
- 'Carpolithus woodbridgensis belongs to Carpolithus'
- 'Carya belongs to Juglandaceae'
- 'Carya alba belongs to Carya' according to Nuttall 1818
- 'Carya alba is recombined as Hicoria alba'
- 'Carya antiquorum is recombined as Hicoria antiquora'
- 'Carya antiquorum is recombined as Hicoria antiquora' according to Knowlton 1898
- 'Carya globulosa belongs to Carya' according to Lesquereux 1902
- 'Carya globulosa is recombined as Cucumites globulosus' according to Cockerell 1903
- 'Cucumites globulosus is a subjective synonym of Cucumites lesquereuxii'
- 'Carya vermontana belongs to Carya' according to Lesquereux 1861
- 'Carya vermontana is recombined as Hicoria vermontana' according to Knowlton 1898
- 'Carya vermontana is recombined as Bicarpellites vermontanus' according to Perkins 1904
- 'Carya vermontana is recombined as Bicarpellites vermontanus'
- 'Carya verrucosa belongs to Carya' according to Lesquereux 1861
- 'Carya verrucosa is recombined as Hicoria verrucosa' according to Knowlton 1894
- 'Carya verrucosa is recombined as Hicoria verrucosa'
- 'Cassia belongs to Caesalpiniaceae'
- 'Cassia bentonensis belongs to Cassia' according to Berry 1916
- 'Cassia bentonensis belongs to Cassia'
- 'Cassia emarginata belongs to Cassia'
- 'Cassia emarginata belongs to Cassia' according to Berry 1916
- 'Cassia eolignitica belongs to Cassia' according to Berry 1916
- 'Cassia eolignitica belongs to Cassia'
- 'Cassia evanstonensis belongs to Cassia' according to Knowlton and Cockerell 1919
- 'Cassia fayettensis belongs to Cassia' according to Berry 1916
- 'Cassia fayettensis belongs to Cassia'
- 'Cassia fisheriana belongs to Cassia' according to Knowlton 1918
- 'Cassia fisheriana belongs to Cassia'
- 'Cassia georgiana belongs to Cassia' according to Berry 1918
- 'Cassia georgiana belongs to Cassia'
- 'Cassia glenni belongs to Cassia' according to Berry 1916
- 'Cassia glenni belongs to Cassia'
- 'Cassia idahoensis belongs to Cassia'
- 'Cassia insularis belongs to Cassia' according to Hollick 1912
- 'Cassia insularis belongs to Cassia'
- 'Cassia lowii belongs to Cassia' according to Berry 1916
- 'Cassia lowii belongs to Cassia'
- 'Cassia marshallensis belongs to Cassia' according to Berry 1916
- 'Cassia marshallensis belongs to Cassia'
- 'Cassia mississippiensis belongs to Cassia' according to Berry 1916
- 'Cassia mississippiensis belongs to Cassia'
- 'Cassia obtusa belongs to Cassia' according to Clos and Gay 1850
- 'Cassia obtusa belongs to Cassia' according to Knowlton 1898
- 'Cassia obtusa is replaced by Cassia idahoensis'
- 'Cassia podogonioides belongs to Cassia' according to Ettingshausen 1883
- 'Cassia podogonioides is a subjective synonym of Podogonium americanum'
- 'Cassia polita belongs to Cassia' according to Lesquereux 1891
- 'Cassia polita belongs to Cassia'
- 'Cassia problematica belongs to Cassia' according to Lesquereux 1891
- 'Cassia problematica belongs to Cassia'
- 'Cassia puryearensis belongs to Cassia' according to Berry 1916
- 'Cassia puryearensis belongs to Cassia'
- 'Cassia richardsoni belongs to Cassia' according to Knowlton 1918
- 'Cassia richardsoni belongs to Cassia'
- 'Cassia sapindoides belongs to Cassia' according to Knowlton 1918
- 'Cassia sapindoides belongs to Cassia'
- 'Cassia tennesseensis belongs to Cassia' according to Berry 1916
- 'Cassia tennesseensis belongs to Cassia'
- 'Cassia toraformis belongs to Cassia' according to Berry 1916
- 'Cassia toraformis belongs to Cassia'
- 'Cassia vaughani belongs to Cassia' according to Berry 1919
- 'Cassia vaughani belongs to Cassia'
- 'Cassia wilcoxiana belongs to Cassia' according to Berry 1916
- 'Cassia wilcoxiana belongs to Cassia'
- 'Castalia belongs to Nymphaeaceae'
- 'Castalia duttoniana belongs to Castalia' according to Knowlton 1918
- 'Castalia duttoniana belongs to Castalia'
- 'Castalia leei belongs to Castalia' according to Knowlton 1917
- 'Castalia leei belongs to Castalia'
- 'Castalia stantoni belongs to Castalia'
- 'Castalia stantoni belongs to Castalia' according to Knowlton 1918
- 'Castanea belongs to Fagaceae'
- 'Castanea claibornensis belongs to Castanea'
- 'Castanea dolicophylla belongs to Castanea' according to Cockerell 1908
- 'Castanea dolicophylla belongs to Castanea'
- 'Castanea intermedia belongs to Castanea'
- 'Castanea pulchella belongs to Castanea'
- 'Castanea ungeri belongs to Castanea' according to Heer 1869
- 'Castanea ungeri is a subjective synonym of Castanea castaneaefolia'
- 'Castanopsis belongs to Fagaceae'
- 'Castanopsis chrysophylloides belongs to Castanopsis'
- 'Casuarina belongs to Casuarinaceae'
- 'Casuarina covillei belongs to Casuarina' according to Ward 1895
- 'Casuarina covillei belongs to Casuarina'
- 'Casuarinaceae belongs to Casuarinales'
- 'Casuarinales belongs to Dicotyledones'
- 'Catalpa belongs to Bignoniaceae'
- 'Catalpa crassifolia belongs to Catalpa' according to Newberry 1868
- 'Catalpa crassifolia is recombined as Aristolochia crassifolia' according to Cockerell 1908
- 'Catalpa crassifolia is recombined as Aristolochia crassifolia'
- 'Caulerpites belongs to Algae'
- 'Caulerpites fastigiatus belongs to Caulerpites' according to Sternberg 1833
- 'Caulerpites fastigiatus is recombined as Sequoia fastigiata' according to Heer 1869
- 'Caulerpites fastigiatus is recombined as Sequoia fastigiata'
- 'Caulinites beckeri belongs to Caulinites' according to Lesquereux 1887
- 'Caulinites beckeri belongs to Caulinites'
- 'Caulinites fecunda belongs to Caulinites' according to Lesquereux 1872
- 'Caulinites fecunda is recombined as Onoclea fecunda' according to Knowlton 1898
- 'Caulinites fecunda is recombined as Onoclea fecunda'
- 'Caulinites inquirendus is recombined as Onoclea inquirenda'
- 'Caulinites sparganioides belongs to Caulinites' according to Lesquereux 1872
- 'Caulinites sparganioides belongs to Caulinites'
- 'Caulinites spinosa is recombined as Caudex spinosus' according to Lesquereux 1883
- 'Caulinites spinosa is recombined as Caudex spinosus'
- 'Caulinites spinosa belongs to Caulinites' according to Lesquereux 1872
- 'Ceanothus belongs to Rhamnaceae'
- 'Ceanothus americanus belongs to Ceanothus'
- 'Ceanothus cinnamomoides belongs to Ceanothus' according to Lesquereux 1871
- 'Ceanothus cinnamomoides is recombined as Zizyphus cinnamomoides' according to Lesquereux 1878
- 'Ceanothus cinnamomoides is recombined as Zizyphus cinnamomoides'
- 'Ceanothus constrictus belongs to Ceanothus' according to Hollick 1906
- 'Ceanothus constrictus belongs to Ceanothus'
- 'Ceanothus cretaceus belongs to Ceanothus'
- 'Ceanothus cretaceus belongs to Ceanothus' according to Dawson 1882
- 'Ceanothus fibrillosus belongs to Ceanothus' according to Lesquereux 1872
- 'Ceanothus fibrillosus is recombined as Zizyphus fibrillosus' according to Lesquereux 1898
- 'Ceanothus meigsii belongs to Ceanothus' according to Lesquereux 1869
- 'Ceanothus meigsii is recombined as Zizyphus meigsii' according to Berry 1916
- 'Ceanothus meigsii is recombined as Zizyphus meigsii'
- 'Cebatha belongs to Menispermaceae'
- 'Cedrela belongs to Meliaceae'
- 'Cedrela mississippiensis belongs to Cedrela' according to Berry 1916
- 'Cedrela mississippiensis belongs to Cedrela'
- 'Cedrela odoratifolia belongs to Cedrela' according to Berry 1916
- 'Cedrela odoratifolia belongs to Cedrela'
- 'Cedrela puryearensis belongs to Cedrela' according to Berry 1916
- 'Cedrela puryearensis belongs to Cedrela'
- 'Cedrela wilcoxiana belongs to Cedrela' according to Berry 1916
- 'Cedrela wilcoxiana belongs to Cedrela'
- 'Cedroxylon belongs to Abietineae'
- 'Cedroxylon pennsylvanicum belongs to Cedroxylon' according to Wherry 1912
- 'Cedroxylon pennsylvanicum is recombined as Brachyoxylon pennsylvanicum'
- 'Cedrus belongs to Abietineae'
- 'Celastraceae belongs to Sapindales'
- 'Celastrinites belongs to Celastraceae'
- 'Celastrinites artocarpidioides belongs to Celastrinites' according to Lesquereux 1878
- 'Celastrinites artocarpidioides belongs to Celastrinites'
- 'Celastrinites elegans belongs to Celastrinites' according to Lesquereux 1883
- 'Celastrinites elegans belongs to Celastrinites'
- 'Celastrinites laevigatus belongs to Celastrinites' according to Lesquereux 1878
- 'Celastrinites laevigatus is a subjective synonym of Celastrinites ambiguus'
- 'Celastrophyllum belongs to Celastraceae'
- 'Celastrophyllum acutidens belongs to Celastrophyllum' according to Fontaine 1889
- 'Celastrophyllum acutidens belongs to Celastrophyllum'
- 'Celastrophyllum alabamensis belongs to Celastrophyllum' according to Berry 1919
- 'Celastrophyllum alabamensis belongs to Celastrophyllum'
- 'Celastrophyllum albaedomus belongs to Celastrophyllum' according to Ward 1905
- 'Celastrophyllum albaedomus belongs to Celastrophyllum'
- 'Celastrophyllum angustifolium belongs to Celastrophyllum' according to Newberry 1895
- 'Celastrophyllum angustifolium belongs to Celastrophyllum'
- 'Celastrophyllum arcinerve belongs to Celastrophyllum' according to Fontaine 1889
- 'Celastrophyllum arcinerve belongs to Celastrophyllum'
- 'Celastrophyllum brittonianum belongs to Celastrophyllum' according to Hollick 1895
- 'Celastrophyllum brittonianum belongs to Celastrophyllum'
- 'Celastrophyllum brookense belongs to Celastrophyllum' according to Fontaine 1889
- 'Celastrophyllum brookense is a subjective synonym of Celastrophyllum parvifolium'
- 'Celastrophyllum carolinensis belongs to Celastrophyllum'
- 'Celastrophyllum crassipes belongs to Celastrophyllum'
- 'Celastrophyllum crenatum belongs to Celastrophyllum'
- 'Celastrophyllum cretaceum belongs to Celastrophyllum' according to Lesquereux 1891
- 'Celastrophyllum cretaceum belongs to Celastrophyllum'
- 'Celastrophyllum decurrens belongs to Celastrophyllum'
- 'Celastrophyllum denticulatum belongs to Celastrophyllum' according to Fontaine 1889
- 'Celastrophyllum denticulatum belongs to Celastrophyllum'
- 'Celastrophyllum elegans belongs to Celastrophyllum'
- 'Celastrophyllum grandifolium belongs to Celastrophyllum' according to Newberry 1895
- 'Celastrophyllum grandifolium belongs to Celastrophyllum'
- 'Celastrophyllum gymindaefolium belongs to Celastrophyllum' according to Berry 1919
- 'Celastrophyllum gymindaefolium belongs to Celastrophyllum'
- 'Celastrophyllum hunteri belongs to Celastrophyllum' according to Ward 1895
- 'Celastrophyllum hunteri belongs to Celastrophyllum'
- 'Celastrophyllum latifolium belongs to Celastrophyllum' according to Fontaine 1889
- 'Celastrophyllum latifolium belongs to Celastrophyllum'
- 'Celastrophyllum minus belongs to Celastrophyllum' according to Hollick 1895
- 'Celastrophyllum minus belongs to Celastrophyllum'
- 'Celastrophyllum myrsinoides belongs to Celastrophyllum' according to Lesquereux 1891
- 'Celastrophyllum myrsinoides belongs to Celastrophyllum'
- 'Celastrophyllum newberryanum belongs to Celastrophyllum' according to Hollick 1895
- 'Celastrophyllum newberryanum belongs to Celastrophyllum'
- 'Celastrophyllum obliquum belongs to Celastrophyllum' according to Knowlton 1891
- 'Celastrophyllum obliquum belongs to Celastrophyllum'
- 'Celastrophyllum obovatum belongs to Celastrophyllum' according to Fontaine 1889
- 'Celastrophyllum obovatum is a subjective synonym of Celastrophyllum latifolium'
- 'Celastrophyllum obtusidens belongs to Celastrophyllum' according to Fontaine 1889
- 'Celastrophyllum obtusidens is a subjective synonym of Celastrophyllum acutidens'
- 'Celastrophyllum praecrassipes belongs to Celastrophyllum' according to Berry 1919
- 'Celastrophyllum praecrassipes belongs to Celastrophyllum'
- 'Celastrophyllum proteoides belongs to Celastrophyllum' according to Fontaine 1889
- 'Celastrophyllum proteoides is a subjective synonym of Thinnfeldia granulata'
- 'Celastrophyllum pulchrum belongs to Celastrophyllum' according to Ward 1899
- 'Celastrophyllum pulchrum is a subjective synonym of Celastrophyllum acutidens'
- 'Celastrophyllum robustum belongs to Celastrophyllum' according to Newberry 1895
- 'Celastrophyllum robustum belongs to Celastrophyllum'
- 'Celastrophyllum saliciforme belongs to Celastrophyllum' according to Ward 1905
- 'Celastrophyllum saliciforme is a subjective synonym of Celastrophyllum hunteri'
- 'Celastrophyllum shirleyensis belongs to Celastrophyllum' according to Berry 1919
- 'Celastrophyllum shirleyensis belongs to Celastrophyllum'
- 'Celastrophyllum spatulatum belongs to Celastrophyllum' according to Newberry 1895
- 'Celastrophyllum spatulatum belongs to Celastrophyllum'
- 'Celastrophyllum tenuinerve belongs to Celastrophyllum' according to Fontaine 1889
- 'Celastrophyllum tenuinerve is a subjective synonym of Celastrophyllum latifolium'
- 'Celastrophyllum undulatum belongs to Celastrophyllum' according to Newberry 1895
- 'Celastrophyllum undulatum belongs to Celastrophyllum'
- 'Celastrus belongs to Celastraceae'
- 'Celastrus alnifolius belongs to Celastrus' according to Don 1825
- 'Celastrus alnifolius belongs to Celastrus' according to Ward 1885
- 'Celastrus alnifolius is replaced by Celastrus montanensis'
- 'Celastrus arctica belongs to Celastrus'
- 'Celastrus arctica belongs to Celastrus' according to Heer 1883
- 'Celastrus borealis belongs to Celastrus' according to Heer 1869
- 'Celastrus borealis belongs to Celastrus'
- 'Celastrus bruckmanni belongs to Celastrus' according to Braun 1851
- 'Celastrus bruckmanni belongs to Celastrus'
- 'Celastrus bruckmannifolia belongs to Celastrus' according to Berry 1916
- 'Celastrus bruckmannifolia belongs to Celastrus'
- 'Celastrus colignitica belongs to Celastrus'
- 'Celastrus colignitica belongs to Celastrus' according to Berry 1916
- 'Celastrus confluens belongs to Celastrus' according to Knowlton 1902
- 'Celastrus confluens belongs to Celastrus'
- 'Celastrus culveri belongs to Celastrus'
- 'Celastrus curvinervis belongs to Celastrus' according to Ward 1885
- 'Celastrus curvinervis belongs to Celastrus'
- 'Celastrus dignatus belongs to Celastrus' according to Knowlton 1902
- 'Celastrus dignatus belongs to Celastrus'
- 'Celastrus ellipticus belongs to Celastrus'
- 'Celastrus ferrugineus belongs to Celastrus' according to Ward 1885
- 'Celastrus ferrugineus belongs to Celastrus'
- 'Celastrus fraxinifolius belongs to Celastrus' according to Lesquereux 1883
- 'Celastrus fraxinifolius belongs to Celastrus'
- 'Celastrus gaudini belongs to Celastrus' according to Lesquereux 1888
- 'Celastrus gaudini belongs to Celastrus'
- 'Celastrus grewiopsis belongs to Celastrus' according to Ward 1885
- 'Celastrus grewiopsis belongs to Celastrus'
- 'Celastrus haddeni belongs to Celastrus' according to Knowlton 1918
- 'Celastrus haddeni belongs to Celastrus'
- 'Celastrus hesperius belongs to Celastrus' according to Knowlton 1918
- 'Celastrus hesperius belongs to Celastrus'
- 'Celastrus inaequalis belongs to Celastrus'
- 'Celastrus lacoei belongs to Celastrus' according to Lesquereux 1883
- 'Celastrus lacoei belongs to Celastrus'
- 'Celastrus lindgreni belongs to Celastrus' according to Knowlton 1898
- 'Celastrus lindgreni belongs to Celastrus'
- 'Celastrus minor belongs to Celastrus' according to Berry 1916
- 'Celastrus minor belongs to Celastrus'
- 'Celastrus montanensis belongs to Celastrus' according to Knowlton and Cockerell 1919
- 'Celastrus ovatus belongs to Celastrus' according to Hill 1865
- 'Celastrus ovatus belongs to Celastrus' according to Ward 1885
- 'Celastrus ovatus is replaced by Celastrus wardii'
- 'Celastrus pterospermoides belongs to Celastrus' according to Ward 1885
- 'Celastrus pterospermoides belongs to Celastrus'
- 'Celastrus serratus belongs to Celastrus' according to Knowlton 1918
- 'Celastrus serratus belongs to Celastrus'
- 'Celastrus taurinensis belongs to Celastrus' according to Ward 1885
- 'Celastrus taurinensis belongs to Celastrus'
- 'Celastrus veatchi belongs to Celastrus' according to Hollick 1899
- 'Celastrus veatchi belongs to Celastrus'
- 'Celastrus wardii belongs to Celastrus' according to Knowlton and Cockerell 1919
- 'Celtis belongs to Ulmaceae'
- 'Celtis brevifolia belongs to Celtis' according to Lesquereux 1869
- 'Celtis brevifolia is a subjective synonym of Ficus schimperi'
- 'Celtis lingualis belongs to Celtis' according to Knowlton and Cockerell 1919
- 'Celtis mccoshii belongs to Celtis' according to Lesquereux 1883
- 'Celtis mccoshii belongs to Celtis'
- 'Celtis newberryi belongs to Celtis' according to Knowlton and Cockerell 1919
- 'Celtis parvifolia belongs to Celtis' according to Rich 1853
- 'Celtis parvifolia belongs to Celtis' according to Newberry 1882
- 'Celtis parvifolia is replaced by Celtis newberryi'
- 'Celtis pseudocrassifolia belongs to Celtis' according to Hollick 1906
- 'Celtis pseudocrassifolia belongs to Celtis'
- 'Celtis rugosa belongs to Celtis' according to Willdenow 1897
- 'Celtis rugosa belongs to Celtis' according to Newberry 1882
- 'Celtis rugosa is replaced by Celtis lingualis'
- 'Cephalanthus belongs to Rubiaceae'
- 'Cephalanthus occidentalis belongs to Cephalanthus'
- 'Cephalotaxopsis belongs to Taxeae'
- 'Cephalotaxopsis brevifolia belongs to Cephalotaxopsis' according to Fontaine 1889
- 'Cephalotaxopsis brevifolia belongs to Cephalotaxopsis'
- 'Cephalotaxopsis carolinensis belongs to Cephalotaxopsis' according to Fontaine 1900
- 'Cephalotaxopsis carolinensis belongs to Cephalotaxopsis'
- 'Cephalotaxopsis magnifolia belongs to Cephalotaxopsis'
- 'Cephalotaxopsis microphylla belongs to Cephalotaxopsis' according to Fontaine 1889
- 'Cephalotaxopsis microphylla is a subjective synonym of Cephalotaxopsis brevifolia'
- 'Cephalotaxopsis ramosa belongs to Cephalotaxopsis' according to Fontaine 1889
- 'Cephalotaxopsis ramosa belongs to Cephalotaxopsis'
- 'Cephalotaxopsis rhytidodes belongs to Cephalotaxopsis' according to Ward 1905
- 'Cephalotaxopsis rhytidodes is a subjective synonym of Cephalotaxopsis magnifolia'
- 'Cephalotaxospermum belongs to Taxeae'
- 'Cephalotaxospermum carolinianum belongs to Cephalotaxospermum'
- 'Cephalotaxus belongs to Taxeae'
- 'Cephalotaxus coloradensis belongs to Cephalotaxus' according to Knowlton 1916
- 'Cephalotaxus coloradensis belongs to Cephalotaxus'
- 'Ceratopetalum americanum belongs to Ceratopetalum' according to Ettingshausen 1883
- 'Ceratopetalum americanum is a subjective synonym of Myrica drymeja'
- 'Cercidoxylon belongs to Caesalpiniaceae'
- 'Cercidoxylon zirkeli belongs to Cercidoxylon'
- 'Cercis belongs to Caesalpiniaceae'
- 'Cercis borealis belongs to Cercis' according to Newberry 1882
- 'Cercis borealis belongs to Cercis'
- 'Cercis canadensis belongs to Cercis'
- 'Cercis eocenica belongs to Cercis' according to Lesquereux 1872
- 'Cercis eocenica belongs to Cercis'
- 'Cercis nevadensis belongs to Cercis' according to Knowlton 1901
- 'Cercis nevadensis belongs to Cercis'
- 'Cercis parvifolia belongs to Cercis' according to Lesquereux 1883
- 'Cercis parvifolia belongs to Cercis'
- 'Cercis truncata belongs to Cercis' according to Lesquereux 1883
- 'Cercis truncata belongs to Cercis'
- 'Cercis wilcoxiana belongs to Cercis' according to Berry 1916
- 'Cercis wilcoxiana belongs to Cercis'
- 'Cercocarpus belongs to Rosaceae'
- 'Cercocarpus antiquus belongs to Cercocarpus'
- 'Cercocarpus betulaefolius belongs to Cercocarpus'
- 'Cercocarpus betulaefolius belongs to Cercocarpus' according to Nuttall 1840
- 'Cercocarpus orestesi belongs to Cercocarpus' according to Knowlton 1918
- 'Cercocarpus orestesi belongs to Cercocarpus'
- 'Chaetochloa belongs to Gramineae'
- 'Chamaecyparis nutkaensis belongs to Chamaecyparis' according to Lindley and Gordon 1850
- 'Chamaecyparis nutkaensis belongs to Chamaecyparis'
- 'Chamaecyparis sphaeroidea belongs to Chamaecyparis' according to Spach 1841
- 'Chamaecyparis sphaeroidea is a subjective synonym of Chamaecyparis thyoides'
- 'Chamaedorea belongs to Arecaceae'
- 'Chamaerops serrulata belongs to Chamaerops' according to Michaux 1803
- 'Chamaerops serrulata is recombined as Serenoa serrulata' according to Hooker 1884
- 'Chamaerops serrulata is recombined as Serenoa serrulata'
- 'Chara belongs to Characeae'
- 'Chara compressa belongs to Chara'
- 'Chara estanciana belongs to Chara'
- 'Chara estanciana belongs to Chara' according to Hannibal 1918
- 'Chara glomerata belongs to Chara' according to Lesquereux 1883
- 'Chara glomerata belongs to Chara'
- 'Chara peritula belongs to Chara' according to Cockerell 1908
- 'Chara peritula belongs to Chara'
- 'Chara springerae belongs to Chara' according to Knowlton 1902
- 'Chara springerae belongs to Chara'
- 'Chara stantoni belongs to Chara' according to Knowlton 1893
- 'Chara stantoni belongs to Chara'
- 'Characeae belongs to Characeales'
- 'Characeales belongs to Algae'
- 'Cheilanthites goepperti is recombined as Ruffordia goepperti'
- 'Cheilanthites goepperti belongs to Cheilanthites' according to Dunker 1844
- 'Cheilanthites goepperti is recombined as Ruffordia goepperti' according to Seward 1894
- 'Cheirolepis belongs to Coniferales'
- 'Cheirolepis latus belongs to Cheirolepis' according to Brown 1911
- 'Cheirolepis latus belongs to Cheirolepis'
- 'Chenopodiales belongs to Dicotyledones'
- 'Chionanthus belongs to Oleaceae'
- 'Chionanthus membranaceus belongs to Chionanthus' according to Knowlton 1918
- 'Chionanthus membranaceus belongs to Chionanthus'
- 'Chiropteris belongs to Ophioglossaceae'
- 'Chiropteris williamsii belongs to Chiropteris'
- 'Chiropteris williamsii belongs to Chiropteris' according to Newberry 1891
- 'Chondrites belongs to Algae'
- 'Chondrites alpestris belongs to Chondrites' according to Heer 1877
- 'Chondrites alpestris belongs to Chondrites'
- 'Chondrites bulbosus belongs to Chondrites' according to Lesquereux 1872
- 'Chondrites bulbosus belongs to Chondrites'
- 'Chondrites divaricatus belongs to Chondrites' according to Fischer-Ooster 1858
- 'Chondrites divaricatus belongs to Chondrites'
- 'Chondrites filiciformis belongs to Chondrites' according to Lesquereux 1888
- 'Chondrites filiciformis belongs to Chondrites'
- 'Chondrites flexuosus belongs to Chondrites' according to Newberry 1895
- 'Chondrites flexuosus belongs to Chondrites'
- 'Chondrites gracilis belongs to Chondrites'
- 'Chondrites heerii belongs to Chondrites' according to Eichwald 1871
- 'Chondrites heerii belongs to Chondrites'
- 'Chondrites interruptus belongs to Chondrites'
- 'Chondrites ramosus belongs to Chondrites'
- 'Chondrites subsimplex belongs to Chondrites' according to Lesquereux 1872
- 'Chondrites subsimplex belongs to Chondrites'
- 'Chondrophyllum belongs to Araliaceae'
- 'Chondrophyllum nordenskioeldi belongs to Chondrophyllum' according to Heer 1874
- 'Chondrophyllum nordenskioeldi is recombined as Pistia nordenskioeldi' according to Berry 1910
- 'Chondrophyllum nordenskioeldi is recombined as Pistia nordenskioeldi'
- 'Chondrophyllum obovatum belongs to Chondrophyllum' according to Newberry 1895
- 'Chondrophyllum obovatum belongs to Chondrophyllum'
- 'Chondrophyllum orbiculatum is recombined as Hedera orbiculata' according to Lesquereux 1891
- 'Chondrophyllum orbiculatum belongs to Chondrophyllum' according to Heer 1874
- 'Chondrophyllum orbiculatum belongs to Chondrophyllum'
- 'Chondrophyllum reticulatum belongs to Chondrophyllum' according to Hollick 1895
- 'Chondrophyllum reticulatum belongs to Chondrophyllum'
- 'Chrysobalanus belongs to Rosaceae'
- 'Chrysobalanus eocenica belongs to Chrysobalanus' according to Berry 1916
- 'Chrysobalanus eocenica belongs to Chrysobalanus'
- 'Chrysobalanus pollardiana belongs to Chrysobalanus'
- 'Chrysobalanus pollardiana belongs to Chrysobalanus' according to Knowlton 1901
- 'Chrysophyllum belongs to Sapotaceae'
- 'Chrysophyllum ficifolia belongs to Chrysophyllum' according to Berry 1916
- 'Chrysophyllum ficifolia belongs to Chrysophyllum'
- 'Cinchonidium ovale belongs to Cinchonidium' according to Lesquereux 1883
- 'Cinchonidium ovale belongs to Cinchonidium'
- 'Cinchonidium turneri belongs to Cinchonidium' according to Knowlton 1901
- 'Cinchonidium turneri belongs to Cinchonidium'
- 'Cinnamomum belongs to Lauraceae'
- 'Cinnamomum affine belongs to Cinnamomum' according to Lesquereux 1868
- 'Cinnamomum affine belongs to Cinnamomum'
- 'Cinnamomum angustum belongs to Cinnamomum' according to Berry 1918
- 'Cinnamomum angustum belongs to Cinnamomum'
- 'Cinnamomum bendirei belongs to Cinnamomum'
- 'Cinnamomum bendirei belongs to Cinnamomum' according to Knowlton 1902
- 'Cinnamomum buchi belongs to Cinnamomum' according to Heer 1856
- 'Cinnamomum buchi belongs to Cinnamomum'
- 'Cinnamomum canadense belongs to Cinnamomum' according to Dawson 1885
- 'Cinnamomum canadense belongs to Cinnamomum'
- 'Cinnamomum corrugatum belongs to Cinnamomum' according to Perkins 1904
- 'Cinnamomum corrugatum belongs to Cinnamomum'
- 'Cinnamomum crassipes belongs to Cinnamomum' according to Lesquereux 1859
- 'Cinnamomum crassipes belongs to Cinnamomum'
- 'Cinnamomum crassipetiolatum belongs to Cinnamomum' according to Hollick 1906
- 'Cinnamomum crassipetiolatum belongs to Cinnamomum'
- 'Cinnamomum dilleri belongs to Cinnamomum' according to Knowlton 1902
- 'Cinnamomum dilleri belongs to Cinnamomum'
- 'Cinnamomum ellipsoideum belongs to Cinnamomum' according to Saporta and Marion 1878
- 'Cinnamomum ellipsoideum belongs to Cinnamomum'
- 'Cinnamomum ellipticum belongs to Cinnamomum'
- 'Cinnamomum ellipticum belongs to Cinnamomum' according to Knowlton 1893
- 'Cinnamomum ficifolium belongs to Cinnamomum' according to Knowlton 1917
- 'Cinnamomum ficifolium belongs to Cinnamomum'
- 'Cinnamomum hesperium belongs to Cinnamomum' according to Knowlton 1917
- 'Cinnamomum hesperium belongs to Cinnamomum'
- 'Cinnamomum intermedium belongs to Cinnamomum' according to Newberry 1895
- 'Cinnamomum intermedium is a subjective synonym of Cinnamomum newberryi'
- 'Cinnamomum lignitum belongs to Cinnamomum' according to Perkins 1904
- 'Cinnamomum lignitum belongs to Cinnamomum'
- 'Cinnamomum linifolium belongs to Cinnamomum' according to Knowlton 1917
- 'Cinnamomum linifolium belongs to Cinnamomum'
- 'Cinnamomum marioni belongs to Cinnamomum' according to Lesquereux 1891
- 'Cinnamomum marioni belongs to Cinnamomum'
- 'Cinnamomum middendorfensis belongs to Cinnamomum'
- 'Cinnamomum mississippiensis belongs to Cinnamomum' according to Lesquereux 1866
- 'Cinnamomum mississippiensis belongs to Cinnamomum'
- 'Cinnamomum newberryi belongs to Cinnamomum'
- 'Cinnamomum novaeangliae belongs to Cinnamomum' according to Lesquereux 1861
- 'Cinnamomum novaeangliae belongs to Cinnamomum'
- 'Cinnamomum oblongatum belongs to Cinnamomum' according to Berry 1916
- 'Cinnamomum oblongatum belongs to Cinnamomum'
- 'Cinnamomum obovatus belongs to Cinnamomum' according to Berry 1916
- 'Cinnamomum obovatus belongs to Cinnamomum'
- 'Cinnamomum ovoides belongs to Cinnamomum' according to Perkins 1904
- 'Cinnamomum ovoides belongs to Cinnamomum'
- 'Cinnamomum postnewberryi belongs to Cinnamomum' according to Berry 1916
- 'Cinnamomum postnewberryi belongs to Cinnamomum'
- 'Cinnamomum scheuchzeri belongs to Cinnamomum' according to Heer 1856
- 'Cinnamomum scheuchzeri belongs to Cinnamomum'
- 'Cinnamomum spectabile belongs to Cinnamomum' according to Heer 1856
- 'Cinnamomum spectabile belongs to Cinnamomum'
- 'Cinnamomum stantoni belongs to Cinnamomum' according to Knowlton 1900
- 'Cinnamomum stantoni belongs to Cinnamomum'
- 'Cinnamomum vera belongs to Cinnamomum' according to Berry 1916
- 'Cinnamomum vera belongs to Cinnamomum'
- 'Cinnamomum wardii belongs to Cinnamomum' according to Knowlton 1898
- 'Cinnamomum wardii belongs to Cinnamomum'
- 'Cissites belongs to Vitaceae'
- 'Cissites acerifolius belongs to Cissites' according to Lesquereux 1891
- 'Cissites acerifolius belongs to Cissites'
- 'Cissites acuminatus belongs to Cissites' according to Lesquereux 1875
- 'Cissites acuminatus belongs to Cissites'
- 'Cissites acutiloba belongs to Cissites' according to Hollick 1895
- 'Cissites acutiloba belongs to Cissites'
- 'Cissites alatus belongs to Cissites' according to Lesquereux 1891
- 'Cissites alatus belongs to Cissites'
- 'Cissites brownii belongs to Cissites' according to Lesquereux 1891
- 'Cissites brownii belongs to Cissites'
- 'Cissites crispus belongs to Cissites' according to Velenovsky 1885
- 'Cissites crispus belongs to Cissites'
- 'Cissites crispus belongs to Cissites' according to Newberry 1895
- 'Cissites crispus is replaced by Cissites newberryi'
- 'Cissites cyclophylla belongs to Cissites' according to Lesquereux 1874
- 'Cissites cyclophylla is a subjective synonym of Populites cyclophylla'
- 'Cissites dentatolobatus belongs to Cissites' according to Lesquereux 1891
- 'Cissites dentatolobatus belongs to Cissites'
- 'Cissites formosus belongs to Cissites' according to Heer 1882
- 'Cissites formosus belongs to Cissites'
- 'Cissites heerii belongs to Cissites' according to Lesquereux 1875
- 'Cissites heerii belongs to Cissites'
- 'Cissites ingens belongs to Cissites' according to Lesquereux 1891
- 'Cissites ingens belongs to Cissites'
- 'Cissites insignis belongs to Cissites' according to Heer 1866
- 'Cissites insignis belongs to Cissites'
- 'Cissites microphyllus belongs to Cissites' according to Lesquereux 1887
- 'Cissites microphyllus belongs to Cissites'
- 'Cissites newberryi belongs to Cissites' according to Berry 1916
- 'Cissites newberryi belongs to Cissites'
- 'Cissites obtusilobus belongs to Cissites'
- 'Cissites obtusilobus belongs to Cissites' according to Lesquereux 1891
- 'Cissites panduratus belongs to Cissites' according to Knowlton 1918
- 'Cissites panduratus belongs to Cissites'
- 'Cissites platanoidea belongs to Cissites' according to Hollick 1895
- 'Cissites platanoidea belongs to Cissites'
- 'Cissites populoides belongs to Cissites' according to Lesquereux 1891
- 'Cissites populoides belongs to Cissites'
- 'Cissus belongs to Vitaceae'
- 'Cissus browniana belongs to Cissus' according to Lesquereux 1884
- 'Cissus browniana belongs to Cissus'
- 'Cissus coloradensis belongs to Cissus' according to Knowlton and Cockerell 1919
- 'Cissus corylifolia belongs to Cissus' according to Lesquereux 1888
- 'Cissus corylifolia belongs to Cissus'
- 'Cissus duplicatoserrata belongs to Cissus' according to Lesquereux 1888
- 'Cissus duplicatoserrata belongs to Cissus'
- 'Cissus grossedentata belongs to Cissus' according to Knowlton 1918
- 'Cissus grossedentata belongs to Cissus'
- 'Cissus haguei belongs to Cissus'
- 'Cissus laevigata is replaced by Cissus coloradensis'
- 'Cissus laevigata belongs to Cissus' according to Blume 1826
- 'Cissus laevigata belongs to Cissus' according to Lesquereux 1872
- 'Cissus lesquereuxii belongs to Cissus'
- 'Cissus lobatocrenata belongs to Cissus' according to Lesquereux 1872
- 'Cissus lobatocrenata belongs to Cissus'
- 'Cissus parrottiaefolia belongs to Cissus' according to Lesquereux 1876
- 'Cissus tricuspidata belongs to Cissus' according to Siebold and Zuccarini 1846
- 'Cissus tricuspidata belongs to Cissus' according to Heer 1869
- 'Cissus tricuspidata is replaced by Cissus lesquereuxii'
- 'Citharexylum belongs to Verbenaceae'
- 'Citharexylum eoligniticum belongs to Citharexylum' according to Berry 1916
- 'Citharexylum eoligniticum belongs to Citharexylum'
- 'Citrophyllum belongs to Rutaceae'
- 'Citrophyllum wilcoxianum belongs to Citrophyllum' according to Berry 1916
- 'Citrophyllum wilcoxianum belongs to Citrophyllum'
- 'Cladophlebis belongs to Polypodiaceae'
- 'Cladophlebis acuta belongs to Cladophlebis' according to Fontaine 1889
- 'Cladophlebis acuta is a subjective synonym of Cladophlebis virginiensis'
- 'Cladophlebis alabamensis belongs to Cladophlebis' according to Berry 1919
- 'Cladophlebis alabamensis belongs to Cladophlebis'
- 'Cladophlebis alata belongs to Cladophlebis' according to Fontaine 1905
- 'Cladophlebis alata belongs to Cladophlebis'
- 'Cladophlebis angustifolia belongs to Cladophlebis' according to Newberry 1891
- 'Cladophlebis angustifolia belongs to Cladophlebis'
- 'Cladophlebis auriculata belongs to Cladophlebis' according to Fontaine 1883
- 'Cladophlebis auriculata belongs to Cladophlebis'
- 'Cladophlebis brevipennis belongs to Cladophlebis' according to Fontaine 1889
- 'Cladophlebis brevipennis is a subjective synonym of Cladophlebis rotundata'
- 'Cladophlebis columbiana belongs to Cladophlebis' according to Dawson 1893
- 'Cladophlebis columbiana belongs to Cladophlebis'
- 'Cladophlebis constricta belongs to Cladophlebis'
- 'Cladophlebis crenata belongs to Cladophlebis' according to Fontaine 1889
- 'Cladophlebis crenata is a subjective synonym of Cladophlebis browniana'
- 'Cladophlebis densifolia belongs to Cladophlebis' according to Fontaine 1896
- 'Cladophlebis densifolia belongs to Cladophlebis'
- 'Cladophlebis distans belongs to Cladophlebis' according to Fontaine 1889
- 'Cladophlebis distans belongs to Cladophlebis'
- 'Cladophlebis falcata belongs to Cladophlebis' according to Fontaine 1889
- 'Cladophlebis falcata is a subjective synonym of Cladophlebis virginiensis'
- 'Cladophlebis fisheri belongs to Cladophlebis' according to Knowlton 1907
- 'Cladophlebis fisheri belongs to Cladophlebis'
- 'Cladophlebis heterophylla belongs to Cladophlebis' according to Fontaine 1892
- 'Cladophlebis heterophylla belongs to Cladophlebis'
- 'Cladophlebis hirta belongs to Cladophlebis' according to Möller 1902
- 'Cladophlebis hirta belongs to Cladophlebis'
- 'Cladophlebis inaequiloba belongs to Cladophlebis'
- 'Cladophlebis inaequiloba belongs to Cladophlebis' according to Fontaine 1889
- 'Cladophlebis inclinata is a nomen dubium'
- 'Cladophlebis latifolia belongs to Cladophlebis' according to Fontaine 1889
- 'Cladophlebis latifolia is a subjective synonym of Cladophlebis constricta'
- 'Cladophlebis microphylla belongs to Cladophlebis' according to Fontaine 1883
- 'Cladophlebis microphylla belongs to Cladophlebis'
- 'Cladophlebis oblongifolia is a nomen dubium'
- 'Cladophlebis ovata belongs to Cladophlebis' according to Fontaine 1883
- 'Cladophlebis ovata belongs to Cladophlebis'
- 'Cladophlebis pachyphylla belongs to Cladophlebis' according to Fontaine 1889
- 'Cladophlebis pachyphylla is a subjective synonym of Cladophlebis albertsii'
- 'Cladophlebis parva belongs to Cladophlebis' according to Fontaine 1889
- 'Cladophlebis parva belongs to Cladophlebis'
- 'Cladophlebis pecopteroides belongs to Cladophlebis' according to Fontaine 1905
- 'Cladophlebis pecopteroides belongs to Cladophlebis'
- 'Cladophlebis petiolata belongs to Cladophlebis' according to Fontaine 1889
- 'Cladophlebis petiolata is a subjective synonym of Cladophlebis browniana'
- 'Cladophlebis pseudowhitbiensis belongs to Cladophlebis' according to Fontaine 1883
- 'Cladophlebis pseudowhitbiensis belongs to Cladophlebis'
- 'Cladophlebis reticulata belongs to Cladophlebis'
- 'Cladophlebis rotundata belongs to Cladophlebis'
- 'Cladophlebis rotundata belongs to Cladophlebis' according to Fontaine 1889
- 'Cladophlebis rotundiloba belongs to Cladophlebis' according to Fontaine 1883
- 'Cladophlebis rotundiloba belongs to Cladophlebis'
- 'Cladophlebis skagitensis belongs to Cladophlebis' according to Penhallow 1907
- 'Cladophlebis skagitensis belongs to Cladophlebis'
- 'Cladophlebis sphenopteroides is a subjective synonym of Ruffordia goepperti'
- 'Cladophlebis sphenopteroides belongs to Cladophlebis' according to Fontaine 1889
- 'Cladophlebis subfalcata belongs to Cladophlebis' according to Fontaine 1883
- 'Cladophlebis subfalcata belongs to Cladophlebis'
- 'Cladophlebis vaccensis belongs to Cladophlebis' according to Ward 1905
- 'Cladophlebis vaccensis belongs to Cladophlebis'
- 'Cladophlebis virginiensis belongs to Cladophlebis'
- 'Cladophlebis wyomingensis belongs to Cladophlebis' according to Fontaine 1899
- 'Cladophlebis wyomingensis belongs to Cladophlebis'
- 'Cladosporites belongs to Dematiaceae'
- 'Cladosporites fasciculatus belongs to Cladosporites' according to Berry 1916
- 'Cladosporites fasciculatus belongs to Cladosporites'
- 'Cladosporites ligniperditor belongs to Cladosporites' according to Whitford 1914
- 'Cladosporites ligniperditor belongs to Cladosporites'
- 'Cladosporites oligocaenicum belongs to Cladosporites' according to Berry 1916
- 'Cladosporites oligocaenicum belongs to Cladosporites'
- 'Clathropteris belongs to Dipteridinae'
- 'Clathropteris rectiusculus belongs to Clathropteris' according to Hitchcock 1855
- 'Clathropteris rectiusculus belongs to Clathropteris'
- 'Clethra belongs to Clethraceae'
- 'Clethra alnifolia belongs to Clethra'
- 'Clethraceae belongs to Ericales'
- 'Clintonia belongs to Convallariaceae'
- 'Clintonia oblongifolia belongs to Clintonia' according to Penhallow 1902
- 'Clintonia oblongifolia belongs to Clintonia'
- 'Coccoloba belongs to Polygonaceae'
- 'Coccoloba laevigata belongs to Coccoloba' according to Lesquereux 1872
- 'Coccoloba laevigata belongs to Coccoloba'
- 'Coccolobis belongs to Polygonaceae'
- 'Coccolobis eolignitica belongs to Coccolobis' according to Berry 1916
- 'Coccolobis eolignitica belongs to Coccolobis'
- 'Coccolobis uviferafolia belongs to Coccolobis'
- 'Coccolobis uviferafolia belongs to Coccolobis' according to Berry 1916
- 'Coccolobites belongs to Polygonaceae'
- 'Coccolobites cretaceus belongs to Coccolobites'
- 'Cocculites belongs to Menispermaceae'
- 'Cocculites imperfectus belongs to Cocculites' according to Hollick 1906
- 'Cocculites imperfectus belongs to Cocculites'
- 'Cocculites inquirendus belongs to Cocculites' according to Hollick 1906
- 'Cocculites inquirendus belongs to Cocculites'
- 'Cocculus belongs to Menispermaceae'
- 'Cocculus cinnamomeus belongs to Cocculus'
- 'Cocculus haydenianus belongs to Cocculus' according to Ward 1885
- 'Cocculus haydenianus belongs to Cocculus'
- 'Cocculus haydenianus is recombined as Cebatha haydenianus' according to Knowlton 1898
- 'Cocculus minutus belongs to Cocculus' according to Hollick 1904
- 'Cocculus minutus belongs to Cocculus'
- 'Cocculus polycarpaefolius belongs to Cocculus' according to Berry 1919
- 'Cocculus polycarpaefolius belongs to Cocculus'
- 'Cocculus problematicus belongs to Cocculus' according to Berry 1919
- 'Cocculus problematicus belongs to Cocculus'
- 'Colutea belongs to Leguminosae'
- 'Colutea boweniana belongs to Colutea' according to Lesquereux 1883
- 'Colutea boweniana belongs to Colutea'
- 'Colutea obovata belongs to Colutea' according to Berry 1906
- 'Colutea obovata belongs to Colutea'
- 'Colutea primordialis belongs to Colutea' according to Heer 1882
- 'Colutea primordialis belongs to Colutea'
- 'Colutea speciosa belongs to Colutea' according to Knowlton 1918
- 'Colutea speciosa belongs to Colutea'
- 'Combretaceae belongs to Myrtales'
- 'Combretanthites belongs to Combretaceae'
- 'Combretanthites eocenica belongs to Combretanthites'
- 'Combretum belongs to Combretaceae'
- 'Combretum obovalis belongs to Combretum' according to Berry 1916
- 'Combretum obovalis belongs to Combretum'
- 'Combretum wilcoxensis belongs to Combretum' according to Berry 1916
- 'Combretum wilcoxensis belongs to Combretum'
- 'Comephyllum cristatum belongs to Comephyllum'
- 'Compositae belongs to Campanulales'
- 'Comptonia belongs to Myricaceae'
- 'Comptonia columbiana belongs to Comptonia' according to Dawson 1890
- 'Comptonia columbiana is a subjective synonym of Comptonia diforme'
- 'Comptonia cuspidata belongs to Comptonia' according to Lesquereux 1882
- 'Comptonia cuspidata belongs to Comptonia'
- 'Comptonia dryandroides belongs to Comptonia' according to Unger 1850
- 'Comptonia dryandroides belongs to Comptonia'
- 'Comptonia parvula belongs to Comptonia' according to Heer 1883
- 'Comptonia parvula is a subjective synonym of Comptonia microphylla'
- 'Comptonia quilchenensis belongs to Comptonia' according to Penhallow 1908
- 'Comptonia quilchenensis belongs to Comptonia'
- 'Confervites belongs to Algae'
- 'Confervites dubius belongs to Confervites' according to Berry 1905
- 'Confervites dubius belongs to Confervites'
- 'Coniferales belongs to Gymnospermae'
- 'Coniopteris belongs to Cyatheaceae'
- 'Conites gibbus belongs to Conites' according to Reuss 1844
- 'Conites gibbus is recombined as Microzamia gibba' according to Corda 1846
- 'Conocarpites belongs to Combretaceae'
- 'Conocarpites formosus belongs to Conocarpites'
- 'Conocarpus belongs to Combretaceae'
- 'Conocarpus eocenica belongs to Conocarpus'
- 'Conocarpus eoligniticus belongs to Conocarpus' according to Berry 1916
- 'Conocarpus eoligniticus belongs to Conocarpus'
- 'Conospermites ellipticus belongs to Conospermites' according to Fontaine 1889
- 'Conospermites ellipticus belongs to Conospermites'
- 'Convallariaceae belongs to Liliales'
- 'Convolvulaceae belongs to Tubiflorae'
- 'Cordia belongs to Boraginaceae'
- 'Cordia eocenica belongs to Cordia' according to Berry 1916
- 'Cordia eocenica belongs to Cordia'
- 'Cordia lowii belongs to Cordia' according to Berry 1916
- 'Cordia lowii belongs to Cordia'
- 'Cordia tiliaefolia belongs to Cordia' according to Braun 1845
- 'Cordia tiliaefolia is recombined as Ficus tiliaefolia' according to Heer 1856
- 'Cordia tiliaefolia is recombined as Ficus tiliaefolia'
- 'Cornaceae belongs to Umbellales'
- 'Cornophyllum belongs to Cornaceae'
- 'Cornophyllum obtusatum belongs to Cornophyllum' according to Berry 1919
- 'Cornophyllum obtusatum belongs to Cornophyllum'
- 'Cornophyllum vetustum belongs to Cornophyllum'
- 'Cornus belongs to Cornaceae'
- 'Cornus acuminata is replaced by Cornus newberryi'
- 'Cornus acuminata belongs to Cornus' according to Weber 1852
- 'Cornus acuminata belongs to Cornus' according to Newberry 1868
- 'Cornus cecilensis belongs to Cornus' according to Berry 1911
- 'Cornus cecilensis belongs to Cornus'
- 'Cornus emmonsii belongs to Cornus' according to Ward 1885
- 'Cornus emmonsii belongs to Cornus'
- 'Cornus ferox belongs to Cornus' according to Unger 1850
- 'Cornus ferox belongs to Cornus'
- 'Cornus forchhammeri belongs to Cornus'
- 'Cornus forchhammeri belongs to Cornus' according to Heer 1882
- 'Cornus fosteri belongs to Cornus' according to Ward 1885
- 'Cornus fosteri belongs to Cornus'
- 'Cornus glabrata belongs to Cornus' according to Bentham 1844
- 'Cornus glabrata belongs to Cornus'
- 'Cornus holmesii belongs to Cornus' according to Lesquereux 1873
- 'Cornus holmesii belongs to Cornus'
- 'Cornus impressa belongs to Cornus' according to Lesquereux 1873
- 'Cornus impressa belongs to Cornus'
- 'Cornus incompletus belongs to Cornus' according to Lesquereux 1868
- 'Cornus incompletus belongs to Cornus'
- 'Cornus kelloggii belongs to Cornus'
- 'Cornus neomexicana belongs to Cornus' according to Knowlton 1917
- 'Cornus neomexicana belongs to Cornus'
- 'Cornus newberryi belongs to Cornus'
- 'Cornus obesus belongs to Cornus' according to Dawson 1893
- 'Cornus obesus belongs to Cornus'
- 'Cornus orbifera belongs to Cornus' according to Heer 1853
- 'Cornus orbifera belongs to Cornus'
- 'Cornus ovalis belongs to Cornus'
- 'Cornus platyphylloides is recombined as Eorhamnidium platyphylloides'
- 'Cornus platyphylloides belongs to Cornus' according to Lesquereux 1891
- 'Cornus platyphylloides is recombined as Eorhamnidium platyphylloides' according to Berry 1919
- 'Cornus praecox belongs to Cornus' according to Lesquereux 1891
- 'Cornus praecox belongs to Cornus'
- 'Cornus rhamnifolia belongs to Cornus' according to Weber 1852
- 'Cornus rhamnifolia belongs to Cornus'
- 'Cornus studeri belongs to Cornus' according to Heer 1859
- 'Cornus studeri belongs to Cornus'
- 'Cornus suborbifera belongs to Cornus' according to Lesquereux 1878
- 'Cornus suborbifera belongs to Cornus'
- 'Cornus wrightii belongs to Cornus'
- 'Corylus belongs to Betulaceae'
- 'Corylus americana belongs to Corylus' according to Walter 1788
- 'Corylus americana belongs to Corylus'
- 'Corylus fosteri belongs to Corylus' according to Ward 1885
- 'Corylus fosteri belongs to Corylus'
- 'Corylus grandifolia belongs to Corylus' according to Newberry 1868
- 'Corylus grandifolia is a subjective synonym of Corylus macquarrii'
- 'Corylus harrimani belongs to Corylus' according to Knowlton 1904
- 'Corylus harrimani belongs to Corylus'
- 'Corylus orbiculata belongs to Corylus' according to Newberry 1868
- 'Corylus orbiculata belongs to Corylus'
- 'Corylus palachei belongs to Corylus' according to Knowlton 1904
- 'Corylus palachei belongs to Corylus'
- 'Corylus rostrata belongs to Corylus' according to Aiton 1789
- 'Corylus rostrata belongs to Corylus'
- 'Corypha palmetto belongs to Corypha' according to Walter 1788
- 'Corypha palmetto is recombined as Sabal palmetto' according to Roemer and Schultes 1830
- 'Corypha palmetto is recombined as Sabal palmetto'
- 'Cotinus belongs to Anacardiaceae'
- 'Crataegus belongs to Pomaceae'
- 'Crataegus acerifolia belongs to Crataegus' according to Lesquereux 1883
- 'Crataegus acerifolia is a subjective synonym of Sorbus diversifolia'
- 'Crataegus aceroides belongs to Crataegus' according to Lesquereux 1891
- 'Crataegus aceroides belongs to Crataegus'
- 'Crataegus aequidentata belongs to Crataegus' according to Lesquereux 1878
- 'Crataegus aequidentata belongs to Crataegus'
- 'Crataegus antiqua belongs to Crataegus' according to Heer 1868
- 'Crataegus antiqua belongs to Crataegus'
- 'Crataegus atavina belongs to Crataegus' according to Heer 1883
- 'Crataegus atavina belongs to Crataegus'
- 'Crataegus betulaefolia belongs to Crataegus' according to Lesquereux 1888
- 'Crataegus betulaefolia belongs to Crataegus'
- 'Crataegus coccineaefolia belongs to Crataegus'
- 'Crataegus coccineaefolia belongs to Crataegus' according to Berry 1907
- 'Crataegus crusgalli belongs to Crataegus'
- 'Crataegus engelhardti belongs to Crataegus' according to Lesquereux 1888
- 'Crataegus engelhardti belongs to Crataegus'
- 'Crataegus flavescens belongs to Crataegus' according to Bosch 1825
- 'Crataegus flavescens belongs to Crataegus' according to Newberry 1882
- 'Crataegus flavescens is replaced by Crataegus newberryi'
- 'Crataegus holmesii belongs to Crataegus' according to Lesquereux 1887
- 'Crataegus holmesii belongs to Crataegus'
- 'Crataegus imparilis belongs to Crataegus' according to Knowlton 1902
- 'Crataegus imparilis belongs to Crataegus'
- 'Crataegus lacoei belongs to Crataegus' according to Lesquereux 1891
- 'Crataegus lacoei belongs to Crataegus'
- 'Crataegus laurenciana belongs to Crataegus' according to Lesquereux 1891
- 'Crataegus laurenciana belongs to Crataegus'
- 'Crataegus lesquereuxi belongs to Crataegus' according to Cockerell 1906
- 'Crataegus lesquereuxi is a subjective synonym of Sorbus diversifolia'
- 'Crataegus marcouiana belongs to Crataegus' according to Lesquereux 1888
- 'Crataegus marcouiana belongs to Crataegus'
- 'Crataegus monmouthensis belongs to Crataegus' according to Berry 1907
- 'Crataegus monmouthensis belongs to Crataegus'
- 'Crataegus myricoides belongs to Crataegus' according to Lesquereux 1888
- 'Crataegus myricoides belongs to Crataegus'
- 'Crataegus newberryi belongs to Crataegus' according to Cockerell 1907
- 'Crataegus newberryi belongs to Crataegus'
- 'Crataegus punctata belongs to Crataegus' according to Jacques 1770
- 'Crataegus punctata belongs to Crataegus'
- 'Crataegus spathulatoides belongs to Crataegus' according to Berry 1907
- 'Crataegus spathulatoides belongs to Crataegus'
- 'Crataegus tenuinervis belongs to Crataegus'
- 'Crataegus tranquillensis belongs to Crataegus' according to Penhallow 1908
- 'Crataegus tranquillensis belongs to Crataegus'
- 'Crataegus tulameensis belongs to Crataegus' according to Penhallow 1908
- 'Crataegus tulameensis belongs to Crataegus'
- 'Credneria belongs to Platanaceae'
- 'Credneria daturaefolia belongs to Credneria' according to Ward 1885
- 'Credneria daturaefolia belongs to Credneria'
- 'Credneria daturaefolia is recombined as Populus daturaefolia' according to Cockerell 1908
- 'Credneria leconteana belongs to Credneria' according to Lesquereux 1868
- 'Credneria leconteana is recombined as Protophyllum leconteanum' according to Lesquereux 1874
- 'Credneria leconteana is recombined as Protophyllum leconteanum'
- 'Credneria macrophylla belongs to Credneria' according to Heer 1869
- 'Credneria macrophylla belongs to Credneria'
- 'Credneria microphylla belongs to Credneria' according to Lesquereux 1875
- 'Credneria microphylla belongs to Credneria'
- 'Credneria pachyphylla belongs to Credneria'
- 'Credneria protophylloides belongs to Credneria' according to Knowlton 1918
- 'Credneria protophylloides belongs to Credneria'
- 'Croton belongs to Euphorbiaceae'
- 'Croton furcatulum belongs to Croton' according to Cockerell 1909
- 'Croton furcatulum belongs to Croton'
- 'Crotonophyllum belongs to Euphorbiaceae'
- 'Crotonophyllum appendiculatum belongs to Crotonophyllum' according to Berry 1916
- 'Crotonophyllum appendiculatum belongs to Crotonophyllum'
- 'Crotonophyllum cretaceum belongs to Crotonophyllum'
- 'Crotonophyllum eocenicum belongs to Crotonophyllum' according to Berry 1916
- 'Crotonophyllum eocenicum belongs to Crotonophyllum'
- 'Crotonophyllum panduraeformis belongs to Crotonophyllum'
- 'Cryptocarya belongs to Juglandaceae'
- 'Cryptocarya eolignitica belongs to Cryptocarya' according to Hollick 1899
- 'Cryptocarya eolignitica belongs to Cryptocarya'
- 'Ctenis belongs to Cycadaceae'
- 'Ctenis auriculata belongs to Ctenis' according to Fontaine 1896
- 'Ctenis auriculata belongs to Ctenis'
- 'Ctenis grandifolia belongs to Ctenis' according to Fontaine 1896
- 'Ctenis grandifolia belongs to Ctenis'
- 'Ctenis imbricata belongs to Ctenis' according to Fontaine 1889
- 'Ctenis imbricata belongs to Ctenis'
- 'Ctenis leckenbyi is recombined as Ptilozamites leckenbyi' according to Nathorst 1880
- 'Ctenis leckenbyi is recombined as Ptilozamites leckenbyi'
- 'Ctenis orovillensis belongs to Ctenis' according to Fontaine 1896
- 'Ctenis orovillensis belongs to Ctenis'
- 'Ctenis wardii belongs to Ctenis' according to Fontaine 1896
- 'Ctenis wardii belongs to Ctenis'
- 'Ctenophyllum belongs to Cycadaceae'
- 'Ctenophyllum angustifolium belongs to Ctenophyllum' according to Fontaine 1896
- 'Ctenophyllum angustifolium belongs to Ctenophyllum'
- 'Ctenophyllum densifolium belongs to Ctenophyllum' according to Fontaine 1896
- 'Ctenophyllum densifolium belongs to Ctenophyllum'
- 'Ctenophyllum emmonsi belongs to Ctenophyllum' according to Fontaine 1883
- 'Ctenophyllum emmonsi is a subjective synonym of Ctenophyllum robustum'
- 'Ctenophyllum giganteum belongs to Ctenophyllum' according to Fontaine 1883
- 'Ctenophyllum giganteum belongs to Ctenophyllum'
- 'Ctenophyllum grandifolium belongs to Ctenophyllum' according to Fontaine 1883
- 'Ctenophyllum grandifolium belongs to Ctenophyllum'
- 'Ctenophyllum latifolium belongs to Ctenophyllum' according to Fontaine 1889
- 'Ctenophyllum pachynerve belongs to Ctenophyllum' according to Fontaine 1905
- 'Ctenophyllum pachynerve belongs to Ctenophyllum'
- 'Ctenophyllum truncatum belongs to Ctenophyllum' according to Fontaine 1883
- 'Ctenophyllum truncatum belongs to Ctenophyllum'
- 'Ctenophyllum wannerianum belongs to Ctenophyllum' according to Fontaine 1900
- 'Ctenophyllum wannerianum belongs to Ctenophyllum'
- 'Ctenophyllum wardii belongs to Ctenophyllum' according to Fontaine 1896
- 'Ctenophyllum wardii belongs to Ctenophyllum'
- 'Ctenopsis belongs to Cycadaceae'
- 'Ctenopteris belongs to Cycadaceae'
- 'Ctenopteris angustifolia belongs to Ctenopteris' according to Fontaine 1889
- 'Ctenopteris angustifolia belongs to Ctenopteris'
- 'Ctenopteris columbiensis belongs to Ctenopteris' according to Penhallow 1902
- 'Ctenopteris columbiensis belongs to Ctenopteris'
- 'Ctenopteris insignis belongs to Ctenopteris' according to Fontaine 1889
- 'Ctenopteris insignis belongs to Ctenopteris'
- 'Ctenopteris insignis is recombined as Zamiopsis insignis' according to Fontaine 1905
- 'Ctenopteris integrifolia belongs to Ctenopteris' according to Fontaine 1889
- 'Ctenopteris integrifolia is a subjective synonym of Scleropteris elliptica'
- 'Ctenopteris longifolia belongs to Ctenopteris' according to Fontaine 1889
- 'Ctenopteris longifolia belongs to Ctenopteris'
- 'Ctenopteris minor belongs to Ctenopteris' according to Fontaine 1889
- 'Ctenopteris minor is a subjective synonym of Ctenopteris insignis'
- 'Ctenopteris virginiensis belongs to Ctenopteris' according to Fontaine 1889
- 'Ctenopteris virginiensis is a subjective synonym of Ctenopteris insignis'
- 'Cucumites lesquereuxii belongs to Cucumites' according to Knowlton 1902
- 'Cucumites lesquereuxii belongs to Cucumites'
- 'Cucurbitaceae belongs to Campanulales'
- 'Cunninghamia elegans is recombined as Cunninghamites elegans'
- 'Cunninghamites belongs to Taxodieae'
- 'Cunninghamites recurvatus belongs to Cunninghamites' according to Hosius and von der Marck 1900
- 'Cunninghamites recurvatus belongs to Cunninghamites'
- 'Cunninghamites sphenolepis is recombined as Palissya sphenolepis' according to Brongniart 1848
- 'Cunninghamites sphenolepis is recombined as Palissya sphenolepis'
- 'Cunninghamites squamosus belongs to Cunninghamites'
- 'Cunoniaceae belongs to Rosales'
- 'Cupanites belongs to Sapindaceae'
- 'Cupanites eoligniticus belongs to Cupanites'
- 'Cupanites eoligniticus belongs to Cupanites' according to Berry 1916
- 'Cupanites loughridgii belongs to Cupanites' according to Berry 1916
- 'Cupanites loughridgii belongs to Cupanites'
- 'Cupanites nigricans belongs to Cupanites' according to Berry 1918
- 'Cupanites nigricans belongs to Cupanites'
- 'Cupressineae was reranked as a subfamily and belongs to Pinaceae'
- 'Cupressinoxylon belongs to Cupressineae'
- 'Cupressinoxylon arkansanum belongs to Cupressinoxylon' according to Knowlton 1889
- 'Cupressinoxylon arkansanum belongs to Cupressinoxylon'
- 'Cupressinoxylon bibbinsi belongs to Cupressinoxylon' according to Knowlton 1896
- 'Cupressinoxylon bibbinsi belongs to Cupressinoxylon'
- 'Cupressinoxylon calli belongs to Cupressinoxylon' according to Knowlton 1889
- 'Cupressinoxylon calli belongs to Cupressinoxylon'
- 'Cupressinoxylon cheyennense belongs to Cupressinoxylon' according to Penhallow 1900
- 'Cupressinoxylon cheyennense belongs to Cupressinoxylon'
- 'Cupressinoxylon coloradense belongs to Cupressinoxylon' according to Knowlton 1918
- 'Cupressinoxylon coloradense belongs to Cupressinoxylon'
- 'Cupressinoxylon columbianum belongs to Cupressinoxylon'
- 'Cupressinoxylon columbianum belongs to Cupressinoxylon' according to Knowlton 1889
- 'Cupressinoxylon comanchense belongs to Cupressinoxylon' according to Penhallow 1900
- 'Cupressinoxylon comanchense belongs to Cupressinoxylon'
- 'Cupressinoxylon dawsoni belongs to Cupressinoxylon' according to Penhallow 1903
- 'Cupressinoxylon dawsoni belongs to Cupressinoxylon'
- 'Cupressinoxylon distichum belongs to Cupressinoxylon' according to Mercklin 1856
- 'Cupressinoxylon distichum belongs to Cupressinoxylon'
- 'Cupressinoxylon dubium belongs to Cupressinoxylon' according to Cramer 1868
- 'Cupressinoxylon dubium belongs to Cupressinoxylon'
- 'Cupressinoxylon elongatum belongs to Cupressinoxylon'
- 'Cupressinoxylon erraticum belongs to Cupressinoxylon' according to Mercklin 1856
- 'Cupressinoxylon erraticum belongs to Cupressinoxylon'
- 'Cupressinoxylon eutreron belongs to Cupressinoxylon' according to Felix 1896
- 'Cupressinoxylon eutreron belongs to Cupressinoxylon'
- 'Cupressinoxylon glasgowi belongs to Cupressinoxylon' according to Knowlton 1888
- 'Cupressinoxylon glasgowi belongs to Cupressinoxylon'
- 'Cupressinoxylon macrocarpoides belongs to Cupressinoxylon' according to Penhallow 1904
- 'Cupressinoxylon macrocarpoides belongs to Cupressinoxylon'
- 'Cupressinoxylon mcgeei belongs to Cupressinoxylon' according to Knowlton 1889
- 'Cupressinoxylon mcgeei is recombined as Podocarpoxylon mcgeei' according to Sinnott and Bartlett 1916
- 'Cupressinoxylon mcgeei is recombined as Podocarpoxylon mcgeei'
- 'Cupressinoxylon pannonicum belongs to Cupressinoxylon' according to Unger 1850
- 'Cupressinoxylon pannonicum belongs to Cupressinoxylon'
- 'Cupressinoxylon polyommatum belongs to Cupressinoxylon' according to Cramer 1868
- 'Cupressinoxylon polyommatum belongs to Cupressinoxylon'
- 'Cupressinoxylon pulchellum belongs to Cupressinoxylon' according to Knowlton 1889
- 'Cupressinoxylon pulchellum belongs to Cupressinoxylon'
- 'Cupressinoxylon pulchrum belongs to Cupressinoxylon' according to Cramer 1868
- 'Cupressinoxylon pulchrum belongs to Cupressinoxylon'
- 'Cupressinoxylon taxodioides belongs to Cupressinoxylon'
- 'Cupressinoxylon taxodioides belongs to Cupressinoxylon' according to Conwentz 1878
- 'Cupressinoxylon vermejoense belongs to Cupressinoxylon' according to Knowlton 1918
- 'Cupressinoxylon vermejoense belongs to Cupressinoxylon'
- 'Cupressinoxylon wardi belongs to Cupressinoxylon' according to Knowlton 1889
- 'Cupressites belongs to Cupressineae'
- 'Cupressites cookii belongs to Cupressites'
- 'Cupressites cookii belongs to Cupressites' according to Newberry 1868
- 'Cupressus belongs to Cupressineae'
- 'Cupressus disticha is recombined as Taxodium distichum'
- 'Cupressus disticha is recombined as Taxodium distichum' according to Richard 1810
- 'Cupressus macrocarpa belongs to Cupressus' according to Hartweg 1847
- 'Cupressus macrocarpa belongs to Cupressus'
- 'Cupressus thyoides is recombined as Chamaecyparis thyoides' according to Britton et al. 1888
- 'Cupressus thyoides is recombined as Chamaecyparis thyoides'
- 'Cyatheaceae belongs to Filicales'
- 'Cyatheites belongs to Cyatheaceae'
- 'Cycadaceae belongs to Cycadales'
- 'Cycadales belongs to Gymnospermae'
- 'Cycadella belongs to Bennettitaceae'
- 'Cycadella beecheriana belongs to Cycadella' according to Ward 1900
- 'Cycadella beecheriana belongs to Cycadella'
- 'Cycadella carbonensis belongs to Cycadella' according to Ward 1900
- 'Cycadella cirrata belongs to Cycadella' according to Ward 1900
- 'Cycadella cirrata belongs to Cycadella'
- 'Cycadella compressa belongs to Cycadella' according to Ward 1900
- 'Cycadella compressa belongs to Cycadella'
- 'Cycadella concinna belongs to Cycadella' according to Ward 1900
- 'Cycadella concinna belongs to Cycadella'
- 'Cycadella contracta belongs to Cycadella'
- 'Cycadella contracta belongs to Cycadella' according to Ward 1900
- 'Cycadella crepidaria belongs to Cycadella' according to Ward 1900
- 'Cycadella crepidaria belongs to Cycadella'
- 'Cycadella exogena belongs to Cycadella' according to Ward 1900
- 'Cycadella exogena belongs to Cycadella'
- 'Cycadella ferruginea belongs to Cycadella' according to Ward 1900
- 'Cycadella ferruginea belongs to Cycadella'
- 'Cycadella gelida belongs to Cycadella' according to Ward 1900
- 'Cycadella gelida belongs to Cycadella'
- 'Cycadella gravis belongs to Cycadella' according to Ward 1900
- 'Cycadella gravis belongs to Cycadella'
- 'Cycadella jejuna belongs to Cycadella' according to Ward 1900
- 'Cycadella jejuna belongs to Cycadella'
- 'Cycadella jurassica belongs to Cycadella' according to Ward 1900
- 'Cycadella jurassica belongs to Cycadella'
- 'Cycadella knightii belongs to Cycadella'
- 'Cycadella knightii belongs to Cycadella' according to Ward 1900
- 'Cycadella knowltoniana belongs to Cycadella' according to Ward 1900
- 'Cycadella knowltoniana belongs to Cycadella'
- 'Cycadella nodosa belongs to Cycadella' according to Ward 1900
- 'Cycadella nodosa belongs to Cycadella'
- 'Cycadella ramentosa belongs to Cycadella' according to Ward 1900
- 'Cycadella ramentosa belongs to Cycadella'
- 'Cycadella reedii belongs to Cycadella'
- 'Cycadella verrucosa belongs to Cycadella' according to Ward 1900
- 'Cycadella verrucosa belongs to Cycadella'
- 'Cycadella wyomingensis belongs to Cycadella' according to Ward 1900
- 'Cycadella wyomingensis belongs to Cycadella'
- 'Cycadeoidea belongs to Bennettitaceae'
- 'Cycadeoidea aspera belongs to Cycadeoidea'
- 'Cycadeoidea aspera belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea bibbinsi belongs to Cycadeoidea' according to Ward 1897
- 'Cycadeoidea bibbinsi belongs to Cycadeoidea'
- 'Cycadeoidea cicatricula belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea cicatricula belongs to Cycadeoidea'
- 'Cycadeoidea clarkiana belongs to Cycadeoidea' according to Ward 1905
- 'Cycadeoidea clarkiana belongs to Cycadeoidea'
- 'Cycadeoidea colei belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea colei belongs to Cycadeoidea'
- 'Cycadeoidea colossalis belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea colossalis belongs to Cycadeoidea'
- 'Cycadeoidea dartoni belongs to Cycadeoidea' according to Wieland 1916
- 'Cycadeoidea dartoni belongs to Cycadeoidea'
- 'Cycadeoidea excelsa belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea excelsa belongs to Cycadeoidea'
- 'Cycadeoidea fisherae belongs to Cycadeoidea' according to Ward 1905
- 'Cycadeoidea fisherae belongs to Cycadeoidea'
- 'Cycadeoidea fontaineana belongs to Cycadeoidea' according to Ward 1897
- 'Cycadeoidea fontaineana belongs to Cycadeoidea'
- 'Cycadeoidea formosa belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea formosa belongs to Cycadeoidea'
- 'Cycadeoidea furcata belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea furcata belongs to Cycadeoidea'
- 'Cycadeoidea goucheriana belongs to Cycadeoidea'
- 'Cycadeoidea goucheriana belongs to Cycadeoidea' according to Ward 1897
- 'Cycadeoidea heliochorea belongs to Cycadeoidea' according to Ward 1900
- 'Cycadeoidea heliochorea belongs to Cycadeoidea'
- 'Cycadeoidea ingens belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea ingens belongs to Cycadeoidea'
- 'Cycadeoidea insoleta belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea insoleta belongs to Cycadeoidea'
- 'Cycadeoidea jenneyana belongs to Cycadeoidea' according to Ward 1894
- 'Cycadeoidea jenneyana belongs to Cycadeoidea'
- 'Cycadeoidea marshiana belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea marshiana belongs to Cycadeoidea'
- 'Cycadeoidea mcbridei belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea mcbridei belongs to Cycadeoidea'
- 'Cycadeoidea mcgeeana belongs to Cycadeoidea' according to Ward 1897
- 'Cycadeoidea mcgeeana belongs to Cycadeoidea'
- 'Cycadeoidea minima belongs to Cycadeoidea' according to Ward 1900
- 'Cycadeoidea minima belongs to Cycadeoidea'
- 'Cycadeoidea minnekahtensis belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea minnekahtensis belongs to Cycadeoidea'
- 'Cycadeoidea munita belongs to Cycadeoidea' according to Cragin 1889
- 'Cycadeoidea munita belongs to Cycadeoidea'
- 'Cycadeoidea nana belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea nana belongs to Cycadeoidea'
- 'Cycadeoidea nigra belongs to Cycadeoidea' according to Ward 1900
- 'Cycadeoidea nigra belongs to Cycadeoidea'
- 'Cycadeoidea occidentalis belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea occidentalis belongs to Cycadeoidea'
- 'Cycadeoidea paynei belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea paynei belongs to Cycadeoidea'
- 'Cycadeoidea protea belongs to Cycadeoidea' according to Ward 1900
- 'Cycadeoidea protea belongs to Cycadeoidea'
- 'Cycadeoidea pulcherrima belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea pulcherrima belongs to Cycadeoidea'
- 'Cycadeoidea reticulata belongs to Cycadeoidea' according to Ward 1900
- 'Cycadeoidea reticulata belongs to Cycadeoidea'
- 'Cycadeoidea rhombica belongs to Cycadeoidea' according to Ward 1900
- 'Cycadeoidea rhombica belongs to Cycadeoidea'
- 'Cycadeoidea stantoni belongs to Cycadeoidea' according to Ward 1905
- 'Cycadeoidea stantoni belongs to Cycadeoidea'
- 'Cycadeoidea stillwelli belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea stillwelli belongs to Cycadeoidea'
- 'Cycadeoidea superba belongs to Cycadeoidea' according to Ward 1900
- 'Cycadeoidea superba belongs to Cycadeoidea'
- 'Cycadeoidea turrita belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea turrita belongs to Cycadeoidea'
- 'Cycadeoidea tysoniana belongs to Cycadeoidea' according to Ward 1897
- 'Cycadeoidea tysoniana belongs to Cycadeoidea'
- 'Cycadeoidea uddeni belongs to Cycadeoidea' according to Wieland 1916
- 'Cycadeoidea uddeni belongs to Cycadeoidea'
- 'Cycadeoidea uhleri belongs to Cycadeoidea' according to Ward 1897
- 'Cycadeoidea uhleri belongs to Cycadeoidea'
- 'Cycadeoidea utopiensis belongs to Cycadeoidea' according to Ward 1900
- 'Cycadeoidea utopiensis is recombined as Cycadella utopiensis' according to Wieland 1905
- 'Cycadeoidea utopiensis is recombined as Cycadella utopiensis'
- 'Cycadeoidea wellsii belongs to Cycadeoidea' according to Ward 1898
- 'Cycadeoidea wellsii belongs to Cycadeoidea'
- 'Cycadeoidea wielandi belongs to Cycadeoidea' according to Ward 1899
- 'Cycadeoidea wielandi belongs to Cycadeoidea'
- 'Cycadeoidea zamiostrobus belongs to Cycadeoidea' according to Solms 1892
- 'Cycadeoidea zamiostrobus is a subjective synonym of Cycadeoidea mirabilis'
- 'Cycadeomyelon belongs to Cycadaceae'
- 'Cycadeomyelon yorkense belongs to Cycadeomyelon' according to Fontaine 1900
- 'Cycadeomyelon yorkense belongs to Cycadeomyelon'
- 'Cycadeospermum belongs to Cycadaceae'
- 'Cycadeospermum acutum belongs to Cycadeospermum' according to Fontaine 1889
- 'Cycadeospermum acutum belongs to Cycadeospermum'
- 'Cycadeospermum angustum belongs to Cycadeospermum' according to Fontaine 1889
- 'Cycadeospermum angustum belongs to Cycadeospermum'
- 'Cycadeospermum californicum belongs to Cycadeospermum' according to Fontaine 1905
- 'Cycadeospermum californicum belongs to Cycadeospermum'
- 'Cycadeospermum columnare belongs to Cycadeospermum' according to Lesquereux 1891
- 'Cycadeospermum columnare belongs to Cycadeospermum'
- 'Cycadeospermum ellipticum belongs to Cycadeospermum' according to Fontaine 1889
- 'Cycadeospermum ellipticum is a subjective synonym of Cycadeospermum spatulatum'
- 'Cycadeospermum lineatum belongs to Cycadeospermum' according to Lesquereux 1891
- 'Cycadeospermum lineatum belongs to Cycadeospermum'
- 'Cycadeospermum marylandicum belongs to Cycadeospermum' according to Berry 1912
- 'Cycadeospermum marylandicum belongs to Cycadeospermum'
- 'Cycadeospermum montanense belongs to Cycadeospermum' according to Fontaine 1905
- 'Cycadeospermum montanense belongs to Cycadeospermum'
- 'Cycadeospermum obovatum belongs to Cycadeospermum' according to Fontaine 1889
- 'Cycadeospermum obovatum belongs to Cycadeospermum'
- 'Cycadeospermum oregonense belongs to Cycadeospermum' according to Fontaine 1905
- 'Cycadeospermum oregonense belongs to Cycadeospermum'
- 'Cycadeospermum ovatum belongs to Cycadeospermum' according to Fontaine 1905
- 'Cycadeospermum ovatum belongs to Cycadeospermum'
- 'Cycadeospermum rotundatum belongs to Cycadeospermum' according to Fontaine 1889
- 'Cycadeospermum rotundatum belongs to Cycadeospermum'
- 'Cycadeospermum spatulatum belongs to Cycadeospermum' according to Fontaine 1889
- 'Cycadeospermum spatulatum belongs to Cycadeospermum'
- 'Cycadeospermum wanneri belongs to Cycadeospermum' according to Fontaine 1900
- 'Cycadeospermum wanneri belongs to Cycadeospermum'
- 'Cycadinocarpus belongs to Cycadaceae'
- 'Cycadinocarpus chapini belongs to Cycadinocarpus' according to Newberry 1888
- 'Cycadinocarpus chapini belongs to Cycadinocarpus'
- 'Cycadinocarpus circularis belongs to Cycadinocarpus' according to Newberry 1895
- 'Cycadinocarpus circularis belongs to Cycadinocarpus'
- 'Cycadites belongs to Cycadaceae'
- 'Cycadites acutus belongs to Cycadites'
- 'Cycadites althausii belongs to Cycadites' according to Dunker 1844
- 'Cycadites althausii is recombined as Matonidium althausii' according to Ward 1899
- 'Cycadites althausii is recombined as Matonidium althausii'
- 'Cycadites pungens belongs to Cycadites' according to Lesquereux 1891
- 'Cycadites pungens belongs to Cycadites'
- 'Cycadites sulcicaulis is recombined as Ctenis sulcicaulis'
- 'Cycadites sulcicaulis belongs to Cycadites' according to Phillips 1829
- 'Cycadites sulcicaulis is recombined as Ctenis sulcicaulis' according to Ward 1905
- 'Cycadites tenuinervis belongs to Cycadites' according to Fontaine 1883
- 'Cycadites tenuinervis belongs to Cycadites'
- 'Cycadites unjiga belongs to Cycadites' according to Dawson 1882
- 'Cycadites unjiga belongs to Cycadites'
- 'Cycadites zamioides is recombined as Taxites zamioides'
- 'Cycadites zamioides is recombined as Taxites zamioides' according to Seward 1900
- 'Cycadospadix belongs to Cycadaceae'
- 'Cycas belongs to Cycadaceae'
- 'Cyclopitys belongs to Coniferales'
- 'Cyclopitys oregonensis belongs to Cyclopitys' according to Fontaine 1905
- 'Cyclopitys oregonensis belongs to Cyclopitys'
- 'Cyclopteris digitata belongs to Cyclopteris' according to Brongniart 1830
- 'Cyclopteris digitata is recombined as Ginkgo digitata' according to Heer 1874
- 'Cyclopteris digitata is recombined as Ginkgo digitata'
- 'Cyclopteris huttoni belongs to Cyclopteris' according to Sternberg 1833
- 'Cyclopteris huttoni is recombined as Ginkgo huttoni' according to Heer 1874
- 'Cyclopteris huttoni is recombined as Ginkgo huttoni'
- 'Cyclopteris mantelli is recombined as Sagenopteris mantelli'
- 'Cyclopteris mantelli belongs to Cyclopteris' according to Dunker 1846
- 'Cyclopteris mantelli is recombined as Sagenopteris mantelli' according to Schenk 1871
- 'Cyclopteris moquensis belongs to Cyclopteris' according to Newberry 1858
- 'Cyclopteris moquensis belongs to Cyclopteris'
- 'Cyclopteris obscurus belongs to Cyclopteris' according to Emmons 1857
- 'Cyclopteris obscurus is replaced by Sagenopteris emmonsi'
- 'Cyparissidium belongs to Taxodieae'
- 'Cyperaceae belongs to Graminales'
- 'Cyperacites belongs to Cyperaceae'
- 'Cyperacites giganteus belongs to Cyperacites'
- 'Cyperites is a subjective synonym of Cyperacites'
- 'Cyperites angustior belongs to Cyperites' according to Schimper 1870
- 'Cyperites angustior is recombined as Cyperacites angustior'
- 'Cyperites borealis belongs to Cyperites' according to Heer 1868
- 'Cyperites borealis is recombined as Cyperacites borealis'
- 'Cyperites canaliculatus belongs to Cyperites' according to Heer 1855
- 'Cyperites canaliculatus is recombined as Cyperacites canaliculatus' according to Schimper 1870
- 'Cyperites haydenii belongs to Cyperites' according to Lesquereux 1883
- 'Cyperites haydenii is recombined as Cyperacites haydenii'
- 'Cyperites paucinervis belongs to Cyperites' according to Heer 1855
- 'Cyperites paucinervis is recombined as Cyperacites paucinervis'
- 'Cyperus belongs to Cyperaceae'
- 'Cyperus braunianus belongs to Cyperus' according to Heer 1855
- 'Cyperus braunianus belongs to Cyperus'
- 'Cyperus chavannesi belongs to Cyperus' according to Heer 1855
- 'Cyperus chavannesi belongs to Cyperus'
- 'Cytisus belongs to Leguminosae'
- 'Cytisus florissantianus belongs to Cytisus' according to Lesquereux 1883
- 'Cytisus florissantianus belongs to Cytisus'
- 'Cytisus modestus belongs to Cytisus' according to Lesquereux 1883
- 'Cytisus modestus is recombined as Ptelea modesta' according to Cockerell 1908
- 'Cytisus modestus is recombined as Ptelea modesta'
- 'Czekanowskia belongs to Coniferales'
- 'Czekanowskia capillaris belongs to Czekanowskia' according to Newberry 1895
- 'Czekanowskia capillaris belongs to Czekanowskia'
- 'Czekanowskia nervosa belongs to Czekanowskia' according to Heer 1881
- 'Czekanowskia nervosa belongs to Czekanowskia'
- 'Dactyolepis belongs to Coniferales'
- 'Dactyolepis cryptomerioides belongs to Dactyolepis'
- 'Dalbergia belongs to Papilionaceae'
- 'Dalbergia apiculata belongs to Dalbergia' according to Newberry 1895
- 'Dalbergia apiculata belongs to Dalbergia'
- 'Dalbergia calvertensis belongs to Dalbergia' according to Berry 1909
- 'Dalbergia calvertensis belongs to Dalbergia'
- 'Dalbergia coloradensis belongs to Dalbergia' according to Knowlton 1916
- 'Dalbergia coloradensis belongs to Dalbergia'
- 'Dalbergia cuneifolia belongs to Dalbergia' according to Heer 1859
- 'Dalbergia cuneifolia belongs to Dalbergia'
- 'Dalbergia eocenica belongs to Dalbergia'
- 'Dalbergia eocenica belongs to Dalbergia' according to Berry 1916
- 'Dalbergia hyperborea belongs to Dalbergia' according to Heer 1882
- 'Dalbergia hyperborea belongs to Dalbergia'
- 'Dalbergia irregularis belongs to Dalbergia' according to Hollick 1906
- 'Dalbergia irregularis belongs to Dalbergia'
- 'Dalbergia lesquereuxii belongs to Dalbergia' according to Ettingshausen 1883
- 'Dalbergia lesquereuxii belongs to Dalbergia'
- 'Dalbergia minor belongs to Dalbergia' according to Hollick 1906
- 'Dalbergia minor belongs to Dalbergia'
- 'Dalbergia minuta belongs to Dalbergia' according to Knowlton 1916
- 'Dalbergia minuta belongs to Dalbergia'
- 'Dalbergia monospermoides belongs to Dalbergia' according to Berry 1916
- 'Dalbergia monospermoides belongs to Dalbergia'
- 'Dalbergia severnensis belongs to Dalbergia' according to Berry 1911
- 'Dalbergia severnensis belongs to Dalbergia'
- 'Dalbergia tennesseensis belongs to Dalbergia' according to Berry 1916
- 'Dalbergia tennesseensis belongs to Dalbergia'
- 'Dalbergia wilcoxiana belongs to Dalbergia' according to Berry 1916
- 'Dalbergia wilcoxiana belongs to Dalbergia'
- 'Dalbergites belongs to Papilionaceae'
- 'Dalbergites ellipticifolius belongs to Dalbergites'
- 'Dalbergites ovatus belongs to Dalbergites' according to Berry 1916
- 'Dammara belongs to Araucariaceae'
- 'Dammara acicularis belongs to Dammara' according to Knowlton 1916
- 'Dammara acicularis belongs to Dammara'
- 'Dammara borealis belongs to Dammara' according to Heer 1882
- 'Dammara borealis belongs to Dammara'
- 'Dammara cliffwoodensis belongs to Dammara' according to Hollick 1897
- 'Dammara cliffwoodensis belongs to Dammara'
- 'Dammara minor belongs to Dammara' according to Hollick 1906
- 'Dammara minor is a subjective synonym of Protodammara speciosa'
- 'Dammara northportensis belongs to Dammara'
- 'Dammara northportensis belongs to Dammara' according to Hollick 1904
- 'Dammarites belongs to Araucariaceae'
- 'Dammarites dubius belongs to Dammarites' according to Dawson 1893
- 'Dammarites dubius belongs to Dammarites'
- 'Danaeopsis belongs to Marattiaceae'
- 'Danaeopsis storrsii belongs to Danaeopsis' according to Fontaine 1905
- 'Danaeopsis storrsii belongs to Danaeopsis'
- 'Daphnogene belongs to Lauraceae'
- 'Daphnogene anglica belongs to Daphnogene' according to Heer 1859
- 'Daphnogene anglica belongs to Daphnogene'
- 'Daphnogene cretacea belongs to Daphnogene' according to Lesquereux 1874
- 'Daphnogene cretacea is a subjective synonym of Cinnamomum scheuchzeri'
- 'Daphnogene elegans belongs to Daphnogene'
- 'Daphnogene elegans belongs to Daphnogene' according to Ward 1885
- 'Daphnogene heerii belongs to Daphnogene' according to Lesquereux 1874
- 'Daphnogene heerii is recombined as Cinnamomum heerii'
- 'Daphnophyllum belongs to Lauraceae'
- 'Daphnophyllum angustifolium belongs to Daphnophyllum' according to Lesquereux 1891
- 'Daphnophyllum angustifolium belongs to Daphnophyllum'
- 'Daphnophyllum dakotense belongs to Daphnophyllum' according to Lesquereux 1891
- 'Daphnophyllum dakotense belongs to Daphnophyllum'
- 'Davallia belongs to Polypodiaceae'
- 'Davallia montana belongs to Davallia' according to Knowlton 1899
- 'Davallia montana belongs to Davallia'
- 'Davallites belongs to Polypodiaceae'
- 'Davallites richardsoni belongs to Davallites'
- 'Delesseria belongs to Algae'
- 'Delesseria fulva belongs to Delesseria' according to Lesquereux 1872
- 'Delesseria fulva belongs to Delesseria'
- 'Delesseria incrassata belongs to Delesseria' according to Lesquereux 1872
- 'Delesseria incrassata is recombined as Caulerpites incrassatus' according to Lesquereux 1878
- 'Delesseria incrassata is recombined as Caulerpites incrassatus'
- 'Delesseria lingulata belongs to Delesseria' according to Lesquereux 1872
- 'Delesseria lingulata is recombined as Caulerpites lingulatus' according to Knowlton 1898
- 'Delesseria lingulata is recombined as Caulerpites lingulatus'
- 'Dematiaceae belongs to Melanconiales'
- 'Dendrium belongs to Ericaceae'
- 'Dendrium pleistocenicum belongs to Dendrium' according to Berry 1907
- 'Dendrium pleistocenicum belongs to Dendrium'
- 'Dendrophycus belongs to Algae'
- 'Dendrophycus shoemakeri belongs to Dendrophycus' according to Ward 1900
- 'Dendrophycus shoemakeri belongs to Dendrophycus'
- 'Dendrophycus triassicus belongs to Dendrophycus'
- 'Dendrophycus triassicus belongs to Dendrophycus' according to Newberry 1887
- 'Dennstaedtia belongs to Polypodiaceae'
- 'Dennstaedtia americana belongs to Dennstaedtia' according to Knowlton 1910
- 'Dennstaedtia americana belongs to Dennstaedtia'
- 'Dermatophyllites acutus belongs to Dermatophyllites' according to Heer 1882
- 'Dermatophyllites acutus belongs to Dermatophyllites'
- 'Dewalquea belongs to Araliaceae'
- 'Dewalquea dakotensis belongs to Dewalquea' according to Lesquereux 1891
- 'Dewalquea dakotensis belongs to Dewalquea'
- 'Dewalquea groenlandica belongs to Dewalquea' according to Heer 1882
- 'Dewalquea groenlandica belongs to Dewalquea'
- 'Dewalquea haldemiana belongs to Dewalquea'
- 'Dewalquea insigniformis belongs to Dewalquea'
- 'Dewalquea insigniformis belongs to Dewalquea' according to Berry 1917
- 'Dewalquea insignis belongs to Dewalquea' according to Hosius and von der Marck 1880
- 'Dewalquea insignis belongs to Dewalquea'
- 'Dewalquea primordialis belongs to Dewalquea' according to Lesquereux 1884
- 'Dewalquea primordialis belongs to Dewalquea'
- 'Dewalquea pulchella belongs to Dewalquea' according to Knowlton 1917
- 'Dewalquea pulchella belongs to Dewalquea'
- 'Dewalquea smithi belongs to Dewalquea'
- 'Dewalquea trifoliata belongs to Dewalquea' according to Newberry 1895
- 'Dewalquea trifoliata belongs to Dewalquea'
- 'Dichotozamites belongs to Cycadaceae'
- 'Dicksonia belongs to Cyatheaceae'
- 'Dicksonia acutiloba belongs to Dicksonia' according to Heer 1876
- 'Dicksonia acutiloba is recombined as Cladophlebis acutiloba' according to Fontaine 1905
- 'Dicksonia acutiloba is recombined as Cladophlebis acutiloba'
- 'Dicksonia burejensis belongs to Dicksonia' according to Zalessky 1904
- 'Dicksonia burejensis is recombined as Coniopteris burejensis' according to Seward 1912
- 'Dicksonia burejensis is recombined as Coniopteris burejensis'
- 'Dicksonia groenlandica belongs to Dicksonia' according to Heer 1882
- 'Dicksonia groenlandica belongs to Dicksonia'
- 'Dicksonia montanensis belongs to Dicksonia' according to Fontaine 1905
- 'Dicksonia montanensis belongs to Dicksonia'
- 'Dicksonia munda belongs to Dicksonia' according to Dawson 1885
- 'Dicksonia munda belongs to Dicksonia'
- 'Dicksonia oregonensis belongs to Dicksonia' according to Fontaine 1905
- 'Dicksonia oregonensis belongs to Dicksonia'
- 'Dicksonia pachyphylla belongs to Dicksonia' according to Fontaine 1905
- 'Dicksonia pachyphylla belongs to Dicksonia'
- 'Dicksonia saportana belongs to Dicksonia' according to Heer 1876
- 'Dicksonia saportana belongs to Dicksonia'
- 'Dicksoniopsis belongs to Cyatheaceae'
- 'Dicotyledones was reranked as a subclass and belongs to Angiospermae'
- 'Dicranaceae belongs to Bryales'
- 'Dicranopteris belongs to Gleicheniaceae'
- 'Dicropteris longifolia belongs to Dicropteris' according to Pomel 1847
- 'Dicropteris longifolia is recombined as Baiera longifolia' according to Heer 1877
- 'Dicropteris longifolia is recombined as Baiera longifolia'
- 'Dictyophyllum belongs to Dipteridinae'
- 'Didymosorus belongs to Pteridophyta'
- 'Didymosphaeria belongs to Sphaeriaceae'
- 'Didymosphaeria betheli belongs to Didymosphaeria' according to Cockerell 1908
- 'Didymosphaeria betheli belongs to Didymosphaeria'
- 'Dilleniaceae belongs to Parietales'
- 'Dillenites belongs to Dilleniaceae'
- 'Dillenites ovatus belongs to Dillenites' according to Berry 1916
- 'Dillenites ovatus belongs to Dillenites'
- 'Dillenites serratus belongs to Dillenites' according to Berry 1916
- 'Dillenites serratus belongs to Dillenites'
- 'Dillenites tetracerafolia belongs to Dillenites' according to Berry 1916
- 'Dillenites tetracerafolia belongs to Dillenites'
- 'Dillenites texensis belongs to Dillenites' according to Berry 1916
- 'Dillenites texensis belongs to Dillenites'
- 'Dioonites belongs to Cycadaceae'
- 'Dioonites borealis belongs to Dioonites' according to Dawson 1882
- 'Dioonites borealis belongs to Dioonites'
- 'Dioonites columbianus belongs to Dioonites' according to Dawson 1873
- 'Dioonites columbianus belongs to Dioonites'
- 'Dioscorea belongs to Dioscoreaceae'
- 'Dioscorea cretacea belongs to Dioscorea' according to Lesquereux 1874
- 'Dioscorea cretacea belongs to Dioscorea'
- 'Dioscoreaceae belongs to Liliales'
- 'Diospyros belongs to Ebenaceae'
- 'Diospyros alaskana belongs to Diospyros' according to Schimper 1872
- 'Diospyros alaskana belongs to Diospyros'
- 'Diospyros ambigua belongs to Diospyros' according to Lesquereux 1883
- 'Diospyros ambigua belongs to Diospyros' according to Ventenat 1803
- 'Diospyros ambigua is replaced by Diospyros nebraskana'
- 'Diospyros amboyensis belongs to Diospyros' according to Berry 1909
- 'Diospyros amboyensis belongs to Diospyros'
- 'Diospyros anceps belongs to Diospyros' according to Heer 1859
- 'Diospyros anceps belongs to Diospyros'
- 'Diospyros apiculata belongs to Diospyros' according to Lesquereux 1891
- 'Diospyros apiculata belongs to Diospyros'
- 'Diospyros brachysepala belongs to Diospyros' according to Braun 1845
- 'Diospyros brachysepala belongs to Diospyros'
- 'Diospyros celastroides belongs to Diospyros' according to Lesquereux 1891
- 'Diospyros celastroides belongs to Diospyros'
- 'Diospyros copeana belongs to Diospyros' according to Lesquereux 1873
- 'Diospyros copeana is recombined as Cinchonidium copeanum' according to Ettingshausen 1883
- 'Diospyros copeana is recombined as Cinchonidium copeanum'
- 'Diospyros cuspidata belongs to Diospyros' according to Kirchner 1898
- 'Diospyros cuspidata is a subjective synonym of Populus crassa'
- 'Diospyros elliptica belongs to Diospyros' according to Knowlton 1902
- 'Diospyros elliptica belongs to Diospyros'
- 'Diospyros eminens belongs to Diospyros' according to Dawson 1893
- 'Diospyros eminens belongs to Diospyros'
- 'Diospyros ficoidea belongs to Diospyros' according to Lesquereux 1875
- 'Diospyros ficoidea belongs to Diospyros'
- 'Diospyros haguei belongs to Diospyros'
- 'Diospyros judithae belongs to Diospyros' according to Knowlton 1916
- 'Diospyros judithae belongs to Diospyros'
- 'Diospyros lamarensis belongs to Diospyros'
- 'Diospyros lancifolia is a subjective synonym of Diospyros alaskana'
- 'Diospyros lancifolia belongs to Diospyros' according to Lesquereux 1859
- 'Diospyros leei belongs to Diospyros'
- 'Diospyros leei belongs to Diospyros' according to Knowlton 1917
- 'Diospyros lesquereuxi belongs to Diospyros' according to Knowlton and Cockerell 1919
- 'Diospyros nebraskana belongs to Diospyros' according to Knowlton and Cockerell 1919
- 'Diospyros nitida belongs to Diospyros' according to Dawson 1882
- 'Diospyros nitida belongs to Diospyros'
- 'Diospyros obtusata belongs to Diospyros' according to Ward 1885
- 'Diospyros obtusata belongs to Diospyros'
- 'Diospyros primaeva belongs to Diospyros'
- 'Diospyros princetonia belongs to Diospyros' according to Cockerell 1906
- 'Diospyros princetonia is a subjective synonym of Diospyros brachysepala'
- 'Diospyros prodromus belongs to Diospyros' according to Heer 1882
- 'Diospyros prodromus belongs to Diospyros'
- 'Diospyros provecta belongs to Diospyros'
- 'Diospyros pseudoanceps belongs to Diospyros' according to Lesquereux 1891
- 'Diospyros pseudoanceps belongs to Diospyros'
- 'Diospyros raritanensis belongs to Diospyros' according to Berry 1910
- 'Diospyros raritanensis belongs to Diospyros'
- 'Diospyros rotundifolius is replaced by Diospyros lesquereuxi'
- 'Diospyros rotundifolia belongs to Diospyros' according to Hiern 1873
- 'Diospyros steenstrupi belongs to Diospyros' according to Heer 1883
- 'Diospyros steenstrupi belongs to Diospyros'
- 'Diospyros stenosepala belongs to Diospyros' according to Heer 1869
- 'Diospyros stenosepala belongs to Diospyros'
- 'Diospyros vancouverensis belongs to Diospyros' according to Dawson 1882
- 'Diospyros vancouverensis belongs to Diospyros'
- 'Diospyros vera belongs to Diospyros' according to Berry 1911
- 'Diospyros vera belongs to Diospyros'
- 'Diospyros virginiana belongs to Diospyros'
- 'Diospyros wilcoxiana belongs to Diospyros' according to Berry 1916
- 'Diospyros wilcoxiana belongs to Diospyros'
- 'Diplazium belongs to Plantae'
- 'Dipteridinae belongs to Polypodiaceae'
- 'Distichium belongs to Dicranaceae'
- 'Distichium capillaceum belongs to Distichium' according to Bruch and Schimper 1846
- 'Distichium capillaceum belongs to Distichium'
- 'Dodonaea belongs to Sapindaceae'
- 'Dodonaea knowltoni belongs to Dodonaea' according to Berry 1916
- 'Dodonaea knowltoni belongs to Dodonaea'
- 'Dodonaea viscosoides belongs to Dodonaea'
- 'Dodonaea wilcoxiana belongs to Dodonaea' according to Berry 1916
- 'Dodonaea wilcoxiana belongs to Dodonaea'
- 'Dolichites belongs to Papilionaceae'
- 'Dolichites deusseni belongs to Dolichites' according to Berry 1916
- 'Dolichites deusseni belongs to Dolichites'
- 'Dombeyopsis belongs to Bignoniaceae'
- 'Dombeyopsis grandifolia belongs to Dombeyopsis' according to Unger 1850
- 'Dombeyopsis grandifolia belongs to Dombeyopsis'
- 'Dombeyopsis islandica belongs to Dombeyopsis' according to Heer 1859
- 'Dombeyopsis islandica belongs to Dombeyopsis'
- 'Dombeyopsis magnifolia belongs to Dombeyopsis'
- 'Dombeyopsis magnifolia belongs to Dombeyopsis' according to Knowlton 1917
- 'Dombeyopsis obtusa belongs to Dombeyopsis' according to Lesquereux 1872
- 'Dombeyopsis obtusa belongs to Dombeyopsis'
- 'Dombeyopsis obtusiloba belongs to Dombeyopsis' according to Lesquereux 1868
- 'Dombeyopsis obtusiloba is recombined as Menispermites obtusiloba' according to Lesquereux 1874
- 'Dombeyopsis obtusiloba is recombined as Menispermites obtusiloba'
- 'Dombeyopsis occidentalis is recombined as Ficus occidentalis'
- 'Dombeyopsis occidentalis belongs to Dombeyopsis' according to Lesquereux 1872
- 'Dombeyopsis occidentalis is recombined as Ficus occidentalis' according to Lesquereux 1878
- 'Dombeyopsis trivialis belongs to Dombeyopsis' according to Lesquereux 1872
- 'Dombeyopsis trivialis belongs to Dombeyopsis'
- 'Dorstenia belongs to Moraceae'
- 'Doryanthites belongs to Monocotyledones'
- 'Doryanthites cretacea belongs to Doryanthites'
- 'Dracaenaceae belongs to Liliales'
- 'Drosera belongs to Droseraceae'
- 'Drosera rotundifolia belongs to Drosera'
- 'Droseraceae belongs to Sarraceniales'
- 'Drupa rhabdosperma belongs to Drupa'
- 'Drupaceae belongs to Rosales'
- 'Dryandra vindobonensis belongs to Dryandra' according to Ettingshausen 1851
- 'Dryandra vindobonensis is recombined as Myrica vindobonensis' according to Heer 1869
- 'Dryandra vindobonensis is recombined as Myrica vindobonensis'
- 'Dryandroides belongs to Proteaceae'
- 'Dryandroides lanceolata belongs to Dryandroides' according to Knowlton 1917
- 'Dryandroides lanceolata belongs to Dryandroides'
- 'Dryandroides lignitum belongs to Dryandroides' according to Unger 1850
- 'Dryandroides lignitum is recombined as Myrica lignitum' according to Saporta 1866
- 'Dryandroides lignitum is recombined as Myrica lignitum'
- 'Dryandroides quercinea belongs to Dryandroides' according to Velenovsky 1883
- 'Dryandroides quercinea belongs to Dryandroides'
- 'Dryandroides undulata belongs to Dryandroides' according to Heer 1859
- 'Dryandroides undulata is recombined as Myrica undulata' according to Schimper 1872
- 'Dryandroides undulata is recombined as Myrica undulata'
- 'Dryophyllum belongs to Fagaceae'
- 'Dryophyllum amplum belongs to Dryophyllum' according to Berry 1916
- 'Dryophyllum amplum belongs to Dryophyllum'
- 'Dryophyllum anomalum belongs to Dryophyllum' according to Berry 1916
- 'Dryophyllum anomalum belongs to Dryophyllum'
- 'Dryophyllum aquamarum belongs to Dryophyllum' according to Ward 1885
- 'Dryophyllum aquamarum belongs to Dryophyllum'
- 'Dryophyllum basidentatum belongs to Dryophyllum' according to Ward 1885
- 'Dryophyllum basidentatum is a subjective synonym of Quercus carbonensis'
- 'Dryophyllum bruneri belongs to Dryophyllum' according to Ward 1885
- 'Dryophyllum bruneri belongs to Dryophyllum'
- 'Dryophyllum crenatum belongs to Dryophyllum' according to Lesquereux 1875
- 'Dryophyllum crenatum belongs to Dryophyllum'
- 'Dryophyllum elongatum belongs to Dryophyllum' according to Dawson 1893
- 'Dryophyllum elongatum is a subjective synonym of Quercus vancouveriana'
- 'Dryophyllum falcatum belongs to Dryophyllum' according to Ward 1885
- 'Dryophyllum falcatum belongs to Dryophyllum'
- 'Dryophyllum gracile belongs to Dryophyllum' according to Debey 1887
- 'Dryophyllum gracile belongs to Dryophyllum'
- 'Quercus latifolia is replaced by Quercus dryophyllopsis'
- 'Dryophyllum latifolium belongs to Dryophyllum' according to Lesquereux 1875
- 'Dryophyllum latifolium is recombined as Quercus latifolia' according to Lesquereux 1891
- 'Dryophyllum longipetiolatum belongs to Dryophyllum'
- 'Dryophyllum neillianum belongs to Dryophyllum' according to Dawson 1893
- 'Dryophyllum neillianum is a subjective synonym of Quercus vancouveriana'
- 'Quercus occidentalis is replaced by Quercus vancouveriana'
- 'Dryophyllum occidentale belongs to Dryophyllum' according to Dawson 1893
- 'Dryophyllum occidentale is recombined as Quercus occidentalis' according to Knowlton 1898
- 'Dryophyllum puryearensis belongs to Dryophyllum' according to Berry 1916
- 'Dryophyllum puryearensis belongs to Dryophyllum'
- 'Dryophyllum salicifolium belongs to Dryophyllum' according to Lesquereux 1874
- 'Dryophyllum salicifolium is a subjective synonym of Quercus holmesii'
- 'Dryophyllum stanleyanum belongs to Dryophyllum' according to Dawson 1895
- 'Dryophyllum stanleyanum belongs to Dryophyllum'
- 'Dryophyllum subfalcatum belongs to Dryophyllum' according to Lesquereux 1875
- 'Dryophyllum subfalcatum belongs to Dryophyllum'
- 'Dryophyllum tennesseensis belongs to Dryophyllum' according to Berry 1916
- 'Dryophyllum tennesseensis belongs to Dryophyllum'
- 'Dryopteris belongs to Polypodiaceae'
- 'Dryopteris cladophleboides belongs to Dryopteris' according to Knowlton 1918
- 'Dryopteris cladophleboides belongs to Dryopteris'
- 'Dryopteris coloradensis belongs to Dryopteris' according to Knowlton 1917
- 'Dryopteris coloradensis belongs to Dryopteris'
- 'Dryopteris gleichenoides belongs to Dryopteris' according to Knowlton 1901
- 'Dryopteris gleichenoides belongs to Dryopteris'
- 'Dryopteris idahoensis belongs to Dryopteris' according to Knowlton 1898
- 'Dryopteris idahoensis belongs to Dryopteris'
- 'Dryopteris kootaniensis belongs to Dryopteris' according to Knowlton 1907
- 'Dryopteris kootaniensis belongs to Dryopteris'
- 'Dryopteris lloydii belongs to Dryopteris' according to Knowlton 1915
- 'Dryopteris lloydii belongs to Dryopteris'
- 'Dryopteris scansa belongs to Dryopteris'
- 'Dryopteris scansa belongs to Dryopteris' according to Cockerell 1908
- 'Dryopteris weedii belongs to Dryopteris'
- 'Dryopteris xantholithense is corrected as Dryopteris xantholithensis and belongs to Dryopteris'
- 'Dryopterites belongs to Polypodiaceae'
- 'Dryopterites stephensoni belongs to Dryopterites'
- 'Drypetes belongs to Euphorbiaceae'
- 'Drypetes praelaterifolia belongs to Drypetes' according to Berry 1916
- 'Drypetes praelaterifolia belongs to Drypetes'
- 'Drypetes prekeyensis belongs to Drypetes' according to Berry 1916
- 'Drypetes prekeyensis belongs to Drypetes'
- 'Dyctuocaulus striatus belongs to Dyctuocaulus'
- 'Ebenaceae belongs to Ebenales'
- 'Ebenales belongs to Dicotyledones'
- 'Ebenoxylon belongs to Ebenaceae'
- 'Ebenoxylon boreale belongs to Ebenoxylon' according to Platen 1907
- 'Ebenoxylon boreale belongs to Ebenoxylon'
- 'Ebenoxylon speciosum belongs to Ebenoxylon' according to Platen 1907
- 'Ebenoxylon speciosum belongs to Ebenoxylon'
- 'Echitonium belongs to Apocynaceae'
- 'Echitonium lanceolatum belongs to Echitonium' according to Ettingshausen 1883
- 'Echitonium lanceolatum belongs to Echitonium'
- 'Echitonium sophiae belongs to Echitonium' according to Weber 1852
- 'Echitonium sophiae belongs to Echitonium'
- 'Elaeagnus belongs to Plantae'
- 'Elaeagnus inaequalis belongs to Elaeagnus' according to Lesquereux 1859
- 'Elaeagnus inaequalis is recombined as Chrysobalanus inaequalis' according to Berry 1916
- 'Elaeagnus inaequalis is recombined as Chrysobalanus inaequalis'
- 'Elaeodendron belongs to Celastraceae'
- 'Elaeodendron helveticum belongs to Elaeodendron' according to Heer 1859
- 'Elaeodendron helveticum belongs to Elaeodendron'
- 'Elaeodendron marylandicum belongs to Elaeodendron' according to Berry 1910
- 'Elaeodendron marylandicum belongs to Elaeodendron'
- 'Elaeodendron polymorphum belongs to Elaeodendron' according to Ward 1886
- 'Elaeodendron polymorphum belongs to Elaeodendron'
- 'Elaeodendron serrulatum belongs to Elaeodendron' according to Ward 1885
- 'Elaeodendron serrulatum belongs to Elaeodendron'
- 'Elaeodendron speciosum belongs to Elaeodendron' according to Lesquereux 1891
- 'Elaeodendron speciosum belongs to Elaeodendron'
- 'Elaeodendron strictum belongs to Elaeodendron' according to Hollick 1906
- 'Elaeodendron strictum belongs to Elaeodendron'
- 'Elaeodendroxylon belongs to Celastraceae'
- 'Elaeodendroxylon polymorphum belongs to Elaeodendroxylon'
- 'Elatides belongs to Abietineae'
- 'Elodea belongs to Plantae'
- 'Elodea canadensis belongs to Elodea' according to Michaux 1803
- 'Elodea canadensis is recombined as Philotria canadensis' according to Britton 1895
- 'Elodea canadensis is recombined as Philotria canadensis'
- 'Embothriopsis belongs to Proteaceae'
- 'Embothriopsis presagita belongs to Embothriopsis'
- 'Embothrites belongs to Proteaceae'
- 'Embothrium belongs to Plantae'
- 'Embothrium daphneoides belongs to Embothrium' according to Lesquereux 1874
- 'Embothrium daphneoides is recombined as Embothrites daphneoides' according to Lesquereux 1883
- 'Embothrium daphneoides is recombined as Embothrites daphneoides'
- 'Encephalartopsis belongs to Cycadaceae'
- 'Encephalartopsis nervosa belongs to Encephalartopsis'
- 'Encephalartopsis oregonensis belongs to Encephalartopsis' according to Fontaine 1905
- 'Encephalartopsis oregonensis belongs to Encephalartopsis'
- 'Encephalartos belongs to Cycadaceae'
- 'Encephalartos cretaceus belongs to Encephalartos' according to Lesquereux 1891
- 'Encephalartos cretaceus belongs to Encephalartos'
- 'Engelhardia [misspelled as Engelhardtia] belongs to Juglandaceae'
- 'Engelhardia ettingshauseni belongs to Engelhardia' according to Berry 1916
- 'Engelhardia ettingshauseni belongs to Engelhardia'
- 'Engelhardia mississippiensis belongs to Engelhardia' according to Berry 1911
- 'Engelhardia mississippiensis belongs to Engelhardia'
- 'Engelhardia oxyptera belongs to Engelhardia' according to Saporta 1865
- 'Engelhardia oxyptera belongs to Engelhardia'
- 'Engelhardia puryearensis belongs to Engelhardia' according to Berry 1916
- 'Engelhardia puryearensis belongs to Engelhardia'
- 'Eoachras belongs to Sapotaceae'
- 'Eoachras eocenica belongs to Eoachras'
- 'Eorhamnidium belongs to Rhamnaceae'
- 'Eorhamnidium cretaceum belongs to Eorhamnidium'
- 'Ephedrites belongs to Gnetaceae'
- 'Ephedrites vernonensis belongs to Ephedrites' according to Fontaine 1905
- 'Ephedrites vernonensis belongs to Ephedrites'
- 'Equisetaceae belongs to Equisetales'
- 'Equisetales belongs to Pteridophyta'
- 'Equisetites burchardti belongs to Equisetites' according to Dunker 1846
- 'Equisetites burchardti is recombined as Equisetum burchardti' according to Brongniart 1849
- 'Equisetites burchardti is recombined as Equisetum burchardti'
- 'Equisetites muensteri is recombined as Equisetum muensteri' according to Fontaine 1900
- 'Equisetites muensteri is recombined as Equisetum muensteri'
- 'Equisetites phillipsii belongs to Equisetites' according to Dunker 1843
- 'Equisetites phillipsii is recombined as Equisetum phillipsii' according to Brongniart 1849
- 'Equisetites phillipsii is recombined as Equisetum phillipsii'
- 'Equisetum belongs to Equisetaceae'
- 'Equisetum abiquiense belongs to Equisetum' according to Fontaine 1890
- 'Equisetum abiquiense belongs to Equisetum'
- 'Equisetum arcticum belongs to Equisetum'
- 'Equisetum arundiniforme belongs to Equisetum' according to Rogers 1843
- 'Equisetum arundiniforme is a subjective synonym of Equisetum rogersii'
- 'Equisetum arvense belongs to Equisetum'
- 'Equisetum canaliculatum belongs to Equisetum'
- 'Equisetum collieri belongs to Equisetum'
- 'Equisetum collieri belongs to Equisetum' according to Knowlton 1914
- 'Equisetum columnaroides is a subjective synonym of Equisetum rogersii'
- 'Equisetum deciduum belongs to Equisetum'
- 'Equisetum florissantense belongs to Equisetum' according to Cockerell 1915
- 'Equisetum florissantense belongs to Equisetum'
- 'Equisetum fluviatile belongs to Equisetum'
- 'Equisetum globulosum belongs to Equisetum' according to Lesquereux 1882
- 'Equisetum globulosum belongs to Equisetum'
- 'Equisetum haguei belongs to Equisetum'
- 'Equisetum haydenii belongs to Equisetum' according to Lesquereux 1871
- 'Equisetum haydenii belongs to Equisetum'
- 'Equisetum hornii belongs to Equisetum' according to Lesquereux 1888
- 'Equisetum hornii is a subjective synonym of Equisetum oregonense'
- 'Equisetum knowltoni belongs to Equisetum' according to Fontaine 1890
- 'Equisetum knowltoni belongs to Equisetum'
- 'Equisetum laevigatum is replaced by Equisetum perlaevigatum' according to Cockerell 1889
- 'Equisetum laevigatum is a subjective synonym of Equisetum perlaevigatum'
- 'Equisetum laevigatum belongs to Equisetum' according to Lesquereux 1873
- 'Equisetum laevigatum belongs to Equisetum' according to Braun 1867
- 'Equisetum lesquereuxii belongs to Equisetum' according to Knowlton 1898
- 'Equisetum lesquereuxii belongs to Equisetum'
- 'Equisetum lyellii [misspelled as Equisetum lyelli] belongs to Equisetum'
- 'Equisetum marylandicum belongs to Equisetum' according to Fontaine 1889
- 'Equisetum marylandicum is a subjective synonym of Equisetum burchardti'
- 'Equisetum meriani belongs to Equisetum'
- 'Equisetum meriani belongs to Equisetum' according to Brongniart 1828
- 'Equisetum montanense belongs to Equisetum' according to Fontaine 1898
- 'Equisetum montanense is a subjective synonym of Equisetum phillipsii'
- 'Equisetum newberryi belongs to Equisetum' according to Knowlton and Cockerell 1919
- 'Equisetum nodosum belongs to Equisetum' according to Lesquereux 1883
- 'Equisetum nodosum is a subjective synonym of Phragmites cretaceus'
- 'Equisetum oregonense belongs to Equisetum' according to Newberry 1882
- 'Equisetum oregonense belongs to Equisetum'
- 'Equisetum perlaevigatum belongs to Equisetum' according to Cockerell 1889
- 'Equisetum perlaevigatum belongs to Equisetum'
- 'Equisetum robustum belongs to Equisetum' according to Newberry 1863
- 'Equisetum robustum belongs to Equisetum' according to Braun 1844
- 'Equisetum robustum is replaced by Equisetum newberryi'
- 'Equisetum scirpoides belongs to Equisetum' according to Michaux 1803
- 'Equisetum scirpoides belongs to Equisetum'
- 'Equisetum similkamense belongs to Equisetum' according to Dawson 1878
- 'Equisetum similkamense belongs to Equisetum'
- 'Equisetum sylvaticum belongs to Equisetum'
- 'Equisetum texense belongs to Equisetum' according to Fontaine 1893
- 'Equisetum texense belongs to Equisetum'
- 'Equisetum virginicum belongs to Equisetum' according to Fontaine 1889
- 'Equisetum virginicum is a subjective synonym of Equisetum burchardti'
- 'Equisetum wyomingense belongs to Equisetum' according to Lesquereux 1873
- 'Equisetum wyomingense belongs to Equisetum'
- 'Eremophyllum belongs to Moraceae'
- 'Ericaceae belongs to Ericales'
- 'Ericales is corrected as Ericales and belongs to Dicotyledones'
- 'Eriocaulaceae belongs to Xyridales'
- 'Eriocaulon belongs to Eriocaulaceae'
- 'Eriocaulon porosum belongs to Eriocaulon'
- 'Eriocaulon porosum belongs to Eriocaulon' according to Lesquereux 1873
- 'Eucalyptophyllum belongs to Myrtaceae'
- 'Eucalyptophyllum oblongifolium belongs to Eucalyptophyllum'
- 'Eucalyptus belongs to Myrtaceae'
- 'Eucalyptus americanus belongs to Eucalyptus' according to Lesquereux 1873
- 'Eucalyptus americanus is corrected as Eucalyptus americana and belongs to Eucalyptus' according to Lesquereux 1878
- 'Eucalyptus americanus is corrected as Eucalyptus americana and belongs to Eucalyptus'
- 'Eucalyptus angusta belongs to Eucalyptus'
- 'Eucalyptus angustifolia belongs to Eucalyptus' according to Newberry 1895
- 'Eucalyptus angustifolia is a subjective synonym of Eucalyptus geinitzi'
- 'Eucalyptus attenuata belongs to Eucalyptus' according to Newberry 1895
- 'Eucalyptus attenuata belongs to Eucalyptus'
- 'Eucalyptus dakotensis belongs to Eucalyptus' according to Lesquereux 1891
- 'Eucalyptus dakotensis belongs to Eucalyptus'
- 'Eucalyptus gouldii belongs to Eucalyptus'
- 'Eucalyptus gouldii belongs to Eucalyptus' according to Ward 1897
- 'Eucalyptus latifolia belongs to Eucalyptus' according to Hollick 1906
- 'Eucalyptus latifolia belongs to Eucalyptus'
- 'Eucalyptus linearifolia belongs to Eucalyptus' according to Berry 1907
- 'Eucalyptus linearifolia belongs to Eucalyptus'
- 'Eucalyptus nervosa belongs to Eucalyptus' according to Newberry 1895
- 'Eucalyptus nervosa is a subjective synonym of Eucalyptus linearifolia'
- 'Eucalyptus parvifolia belongs to Eucalyptus' according to Newberry 1895
- 'Eucalyptus parvifolia belongs to Eucalyptus'
- 'Eucalyptus rosieriana belongs to Eucalyptus' according to Ward 1905
- 'Eucalyptus rosieriana is a subjective synonym of Sapindopsis variabilis'
- 'Eucalyptus schuebleri belongs to Eucalyptus' according to Heer 1869
- 'Eucalyptus schuebleri belongs to Eucalyptus'
- 'Eucalyptus wardiana belongs to Eucalyptus'
- 'Eugeinitzia proxima belongs to Eugeinitzia'
- 'Eugenia belongs to Myrtaceae'
- 'Eugenia anceps belongs to Eugenia' according to Berry 1916
- 'Eugenia anceps belongs to Eugenia'
- 'Eugenia grenadensis belongs to Eugenia' according to Berry 1916
- 'Eugenia grenadensis belongs to Eugenia'
- 'Eugenia hilgardiana belongs to Eugenia' according to Berry 1916
- 'Eugenia hilgardiana belongs to Eugenia'
- 'Eugenia primaeva belongs to Eugenia' according to Lesquereux 1891
- 'Eugenia primaeva belongs to Eugenia'
- 'Eugenia puryearensis belongs to Eugenia' according to Berry 1916
- 'Eugenia puryearensis belongs to Eugenia'
- 'Eugenia tuscaloosensis belongs to Eugenia' according to Berry 1919
- 'Eugenia tuscaloosensis belongs to Eugenia'
- 'Euonymus belongs to Celastraceae'
- 'Euonymus flexifolius belongs to Euonymus' according to Lesquereux 1883
- 'Euonymus flexifolius belongs to Euonymus'
- 'Euonymus splendens belongs to Euonymus' according to Berry 1916
- 'Euonymus splendens belongs to Euonymus'
- 'Euonymus xantholithensis belongs to Euonymus'
- 'Euonymus xantholithensis belongs to Euonymus' according to Ward 1885
- 'Euphorbiaceae belongs to Geraniales'
- 'Euphorbiophyllum belongs to Euphorbiaceae'
- 'Euphorbiophyllum fayettensis belongs to Euphorbiophyllum' according to Berry 1916
- 'Euphorbiophyllum fayettensis belongs to Euphorbiophyllum'
- 'Euphorbocarpum belongs to Euphorbiaceae'
- 'Euphorbocarpum richardsoni belongs to Euphorbocarpum'
- 'Exostema belongs to Rubiaceae'
- 'Exostema pseudocaribaeum belongs to Exostema' according to Berry 1916
- 'Eysenhardtia belongs to Plantae'
- 'Eysenhardtia nigrostipellata belongs to Eysenhardtia' according to Cockerell 1908
- 'Eysenhardtia nigrostipellata is recombined as Viborquia nigrostipellata'
- 'Fagaceae belongs to Fagales'
- 'Fagales belongs to Dicotyledones'
- 'Fagara belongs to Rutaceae'
- 'Fagara delicatula belongs to Fagara' according to Cockerell 1908
- 'Fagara delicatula belongs to Fagara'
- 'Fagara eocenica belongs to Fagara' according to Berry 1916
- 'Fagara eocenica belongs to Fagara'
- 'Fagara hurleyensis belongs to Fagara' according to Berry 1916
- 'Fagara hurleyensis belongs to Fagara'
- 'Fagara puryearensis belongs to Fagara' according to Berry 1916
- 'Fagara puryearensis belongs to Fagara'
- 'Fagophyllum belongs to Fagaceae'
- 'Fagophyllum nervosum belongs to Fagophyllum' according to Nathorst 1888
- 'Fagophyllum nervosum belongs to Fagophyllum'
- 'Fagophyllum retosum belongs to Fagophyllum' according to Dawson 1893
- 'Fagophyllum retosum belongs to Fagophyllum'
- 'Fagopsis belongs to Fagaceae'
- 'Fagus belongs to Fagaceae'
- 'Fagus americana belongs to Fagus' according to Sweet 1826
- 'Fagus americana belongs to Fagus'
- 'Fagus antipofii belongs to Fagus' according to Abich 1858
- 'Fagus antipofii belongs to Fagus'
- 'Fagus castaneaefolia belongs to Fagus' according to Unger 1847
- 'Fagus castaneaefolia is recombined as Castanea castaneaefolia' according to Knowlton 1898
- 'Fagus cretacea belongs to Fagus' according to Newberry 1868
- 'Fagus cretacea belongs to Fagus'
- 'Fagus deucalionis belongs to Fagus' according to Unger 1882
- 'Fagus deucalionis belongs to Fagus'
- 'Fagus feroniae belongs to Fagus' according to Unger 1845
- 'Fagus feroniae belongs to Fagus'
- 'Fagus hitchcockii belongs to Fagus' according to Lesquereux 1861
- 'Fagus hitchcockii belongs to Fagus'
- 'Fagus lambertensis belongs to Fagus' according to Berry 1916
- 'Fagus lambertensis belongs to Fagus'
- 'Fagus macrophylla belongs to Fagus' according to Unger 1854
- 'Fagus macrophylla belongs to Fagus'
- 'Fagus orbiculata belongs to Fagus' according to Lesquereux 1891
- 'Fagus orbiculata belongs to Fagus'
- 'Fagus papyracea belongs to Fagus' according to Knowlton 1918
- 'Fagus papyracea belongs to Fagus'
- 'Fagus polycladus belongs to Fagus' according to Lesquereux 1868
- 'Fagus polycladus belongs to Fagus'
- 'Fagus protonucifera belongs to Fagus' according to Dawson 1882
- 'Fagus protonucifera belongs to Fagus'
- 'Fagus pseudoferruginea belongs to Fagus'
- 'Fagus pumila is recombined as Castanea pumila' according to Miller 1768
- 'Fagus pumila is recombined as Castanea pumila'
- 'Fagus undulata belongs to Fagus'
- 'Feildenia belongs to Coniferales'
- 'Feildenia nordenskioldi [misspelled as Feildenia nordenskioeldi] belongs to Feildenia'
- 'Feildeniopsis belongs to Coniferales'
- 'Feildeniopsis crassinervis belongs to Feildeniopsis'
- 'Feistmantelia oblonga belongs to Feistmantelia'
- 'Feistmantelia virginica belongs to Feistmantelia' according to Fontaine 1905
- 'Feistmantelia virginica belongs to Feistmantelia'
- 'Felixia latiradiata belongs to Felixia'
- 'Festuca belongs to Gramineae'
- 'Festuca ovina belongs to Festuca'
- 'Ficophyllum belongs to Moraceae'
- 'Ficophyllum crassinerve belongs to Ficophyllum'
- 'Ficophyllum eucalyptoides belongs to Ficophyllum' according to Fontaine 1889
- 'Ficophyllum eucalyptoides is a subjective synonym of Sapindopsis magnifolia'
- 'Ficophyllum fontainei belongs to Ficophyllum'
- 'Ficophyllum serratum belongs to Ficophyllum' according to Fontaine 1889
- 'Ficophyllum serratum belongs to Ficophyllum'
- 'Ficophyllum tenuinerve belongs to Ficophyllum' according to Fontaine 1889
- 'Ficophyllum tenuinerve is a subjective synonym of Ficophyllum crassinerve'
- 'Ficoxylon belongs to Moraceae'
- 'Ficoxylon helictoxyloides belongs to Ficoxylon' according to Platen 1907
- 'Ficoxylon helictoxyloides belongs to Ficoxylon'
- 'Ficus belongs to Moraceae'
- 'Ficus aguilar belongs to Ficus' according to Knowlton 1918
- 'Ficus aguilar belongs to Ficus'
- 'Ficus alabamensis belongs to Ficus' according to Berry 1919
- 'Ficus alabamensis belongs to Ficus'
- 'Ficus alaskana belongs to Ficus' according to Newberry 1882
- 'Ficus alaskana belongs to Ficus'
- 'Ficus aligera is recombined as Citrophyllum aligerum'
- 'Ficus alkalina belongs to Ficus' according to Lesquereux 1883
- 'Ficus alkalina belongs to Ficus'
- 'Ficus andraei belongs to Ficus' according to Lesquereux 1888
- 'Ficus andraei belongs to Ficus'
- 'Ficus angustata belongs to Ficus' according to Lesquereux 1883
- 'Ficus angustata is replaced by Ficus kansasensis'
- 'Ficus angustata belongs to Ficus' according to Miquel 1848
- 'Ficus appendiculata belongs to Ficus' according to Heer 1856
- 'Ficus appendiculata belongs to Ficus'
- 'Ficus applegatei belongs to Ficus' according to Knowlton 1902
- 'Ficus applegatei belongs to Ficus'
- 'Ficus arenacea belongs to Ficus' according to Lesquereux 1871
- 'Ficus arenacea belongs to Ficus'
- 'Ficus arenaceaeformis belongs to Ficus' according to Cockerell 1908
- 'Ficus arenaceaeformis belongs to Ficus'
- 'Ficus artocarpoides belongs to Ficus' according to Lesquereux 1883
- 'Ficus artocarpoides belongs to Ficus'
- 'Ficus asarifolia belongs to Ficus' according to Ettingshausen 1867
- 'Ficus asarifolia belongs to Ficus'
- 'Ficus asiminaefolia belongs to Ficus' according to Lesquereux 1883
- 'Ficus asiminaefolia belongs to Ficus'
- 'Ficus atavina belongs to Ficus'
- 'Ficus auriculata belongs to Ficus' according to Lesquereux 1872
- 'Ficus auriculata is corrected as Ficus subtruncata and belongs to Ficus' according to Lesquereux 1878
- 'Ficus auriculata is corrected as Ficus subtruncata and belongs to Ficus'
- 'Ficus austiniana belongs to Ficus' according to Lesquereux 1884
- 'Ficus austiniana belongs to Ficus'
- 'Ficus baueri belongs to Ficus'
- 'Ficus baueri belongs to Ficus' according to Knowlton 1916
- 'Ficus beckwithii belongs to Ficus' according to Lesquereux 1882
- 'Ficus beckwithii is a subjective synonym of Ficus krausiana'
- 'Ficus berthoudi belongs to Ficus' according to Lesquereux 1888
- 'Ficus berthoudi belongs to Ficus'
- 'Ficus bruesi belongs to Ficus' according to Cockerell 1910
- 'Ficus bruesi belongs to Ficus'
- 'Ficus cecilensis belongs to Ficus' according to Berry 1916
- 'Ficus cecilensis belongs to Ficus'
- 'Ficus celtifolius belongs to Ficus'
- 'Ficus ceratops belongs to Ficus' according to Knowlton 1911
- 'Ficus ceratops belongs to Ficus'
- 'Ficus cinnamomoides belongs to Ficus' according to Lesquereux 1869
- 'Ficus claibornensis belongs to Ficus'
- 'Ficus clintoni belongs to Ficus' according to Lesquereux 1872
- 'Ficus clintoni is a subjective synonym of Ficus planicostata'
- 'Ficus coloradensis belongs to Ficus' according to Cockerell 1910
- 'Ficus coloradensis belongs to Ficus'
- 'Ficus condoni belongs to Ficus' according to Newberry 1883
- 'Ficus condoni is recombined as Platanus condoni' according to Knowlton 1901
- 'Ficus contorta belongs to Ficus' according to Dawson 1893
- 'Ficus contorta belongs to Ficus'
- 'Ficus corylifolius belongs to Ficus' according to Lesquereux 1872
- 'Ficus corylifolius belongs to Ficus'
- 'Ficus crossii belongs to Ficus' according to Ward 1885
- 'Ficus crossii belongs to Ficus'
- 'Ficus cuneatus belongs to Ficus' according to Newberry 1863
- 'Ficus cuneatus is recombined as Nyssa cuneata' according to Newberry 1898
- 'Ficus cuneatus is recombined as Nyssa cuneata'
- 'Ficus curta belongs to Ficus' according to Knowlton 1917
- 'Ficus curta belongs to Ficus'
- 'Ficus dalli belongs to Ficus' according to Cockerell 1910
- 'Ficus dalli belongs to Ficus'
- 'Ficus dalmatica belongs to Ficus' according to Ettingshausen 1855
- 'Ficus dalmatica belongs to Ficus'
- 'Ficus dawsoni belongs to Ficus' according to Knowlton and Cockerell 1919
- 'Ficus decandolleana belongs to Ficus' according to Heer 1856
- 'Ficus decandolleana belongs to Ficus'
- 'Ficus deflexa belongs to Ficus' according to Lesquereux 1891
- 'Ficus deflexa belongs to Ficus'
- 'Ficus deformata belongs to Ficus'
- 'Ficus densifolia belongs to Ficus'
- 'Ficus denveriana belongs to Ficus' according to Cockerell 1910
- 'Ficus denveriana belongs to Ficus'
- 'Ficus distorta belongs to Ficus' according to Lesquereux 1875
- 'Ficus distorta belongs to Ficus'
- 'Ficus duplicata belongs to Ficus' according to Knowlton 1918
- 'Ficus duplicata belongs to Ficus'
- 'Ficus eolignitica belongs to Ficus' according to Berry 1916
- 'Ficus eolignitica belongs to Ficus'
- 'Ficus eucalyptifolia belongs to Ficus' according to Knowlton 1918
- 'Ficus eucalyptifolia belongs to Ficus'
- 'Ficus evanstonensis belongs to Ficus' according to Knowlton and Cockerell 1919
- 'Ficus fimbriatus is recombined as Eremophyllum fimbriatum'
- 'Ficus fimbriatus belongs to Ficus' according to Lesquereux 1868
- 'Ficus fimbriatus is recombined as Eremophyllum fimbriatum' according to Lesquereux 1874
- 'Ficus firma belongs to Ficus'
- 'Ficus florissantella belongs to Ficus' according to Cockerell 1908
- 'Ficus florissantella belongs to Ficus'
- 'Ficus florissantia belongs to Ficus' according to Knowlton 1916
- 'Ficus florissantia belongs to Ficus'
- 'Ficus fontainii belongs to Ficus' according to Berry 1919
- 'Ficus fontainii belongs to Ficus'
- 'Ficus fracta belongs to Ficus' according to Velenovsky 1885
- 'Ficus fracta belongs to Ficus'
- 'Ficus fredericksburgensis belongs to Ficus' according to Fontaine 1889
- 'Ficus fredericksburgensis is a subjective synonym of Ficophyllum crassinerve'
- 'Ficus fremonti belongs to Ficus' according to Knowlton 1917
- 'Ficus fremonti belongs to Ficus'
- 'Ficus gaudini belongs to Ficus' according to Lesquereux 1871
- 'Ficus gaudini is a subjective synonym of Ficus uncata'
- 'Ficus georgiana belongs to Ficus'
- 'Ficus gigantea belongs to Ficus' according to Knowlton 1918
- 'Ficus gigantea belongs to Ficus'
- 'Ficus glascoeana belongs to Ficus' according to Lesquereux 1883
- 'Ficus glascoeana belongs to Ficus'
- 'Ficus haddeni belongs to Ficus' according to Knowlton 1918
- 'Ficus haddeni belongs to Ficus'
- 'Ficus haguei belongs to Ficus' according to Knowlton 1899
- 'Ficus haguei belongs to Ficus'
- 'Ficus halliana belongs to Ficus' according to Lesquereux 1874
- 'Ficus halliana belongs to Ficus'
- 'Ficus harkeriana belongs to Ficus'
- 'Ficus harrisiana belongs to Ficus' according to Hollick 1899
- 'Ficus harrisiana belongs to Ficus'
- 'Ficus haydenii belongs to Ficus' according to Lesquereux 1872
- 'Ficus haydenii belongs to Ficus'
- 'Ficus hesperia belongs to Ficus' according to Knowlton 1900
- 'Ficus hesperia belongs to Ficus'
- 'Ficus inaequalis belongs to Ficus' according to Lesquereux 1891
- 'Ficus inaequalis belongs to Ficus'
- 'Ficus incompleta belongs to Ficus' according to Knowlton 1900
- 'Ficus incompleta belongs to Ficus'
- 'Ficus interglacialis belongs to Ficus' according to Hollick 1915
- 'Ficus interglacialis belongs to Ficus'
- 'Ficus jynx belongs to Ficus' according to Unger 1850
- 'Ficus jynx belongs to Ficus'
- 'Ficus kansasensis belongs to Ficus' according to Knowlton and Cockerell 1919
- 'Ficus krausiana belongs to Ficus'
- 'Ficus lacustris belongs to Ficus'
- 'Ficus lacustris belongs to Ficus' according to Knowlton 1901
- 'Ficus lanceolata is replaced by Ficus navicularis'
- 'Ficus lanceolata belongs to Ficus' according to Buch 1814
- 'Ficus lanceolata belongs to Ficus' according to Heer 1856
- 'Ficus lanceolatoacuminata belongs to Ficus' according to Ettingshausen 1872
- 'Ficus lanceolatoacuminata belongs to Ficus'
- 'Ficus laurophyllidia belongs to Ficus' according to Dawson 1893
- 'Ficus laurophyllidia belongs to Ficus'
- 'Ficus laurophyllum belongs to Ficus' according to Lesquereux 1874
- 'Ficus laurophyllum is corrected as Ficus laurophylla and belongs to Ficus'
- 'Ficus leei belongs to Ficus' according to Knowlton 1918
- 'Ficus leei belongs to Ficus'
- 'Ficus leonis belongs to Ficus' according to Knowlton and Cockerell 1919
- 'Ficus lesquereuxii belongs to Ficus'
- 'Ficus lesquereuxii belongs to Ficus' according to Knowlton 1898
- 'Ficus limpida belongs to Ficus' according to Ward 1885
- 'Ficus limpida belongs to Ficus'
- 'Ficus macrophylla belongs to Ficus' according to Lesquereux 1891
- 'Ficus macrophylla is replaced by Ficus leonis'
- 'Ficus macrophylla belongs to Ficus' according to Kunth and Bouché 1846
- 'Ficus magnoliaefolia belongs to Ficus' according to Lesquereux 1883
- 'Ficus magnoliaefolia belongs to Ficus'
- 'Ficus mattawanensis belongs to Ficus' according to Berry 1911
- 'Ficus mattawanensis belongs to Ficus'
- 'Ficus maxima belongs to Ficus' according to Dawson 1882
- 'Ficus maxima is replaced by Ficus dawsoni'
- 'Ficus maxima belongs to Ficus' according to Miller 1768
- 'Ficus melanophylla belongs to Ficus' according to Lesquereux 1891
- 'Ficus melanophylla belongs to Ficus'
- 'Ficus membranacea belongs to Ficus' according to Newberry 1883
- 'Ficus membranacea is replaced by Ficus dalli'
- 'Ficus membranacea belongs to Ficus' according to Wright 1873
- 'Ficus mensae belongs to Ficus' according to Cockerell 1910
- 'Ficus mensae belongs to Ficus'
- 'Ficus microphylla is replaced by Ficus mensae'
- 'Ficus microphylla belongs to Ficus' according to Salzmann 1853
- 'Ficus minima belongs to Ficus' according to Knowlton 1918
- 'Ficus minima belongs to Ficus'
- 'Ficus minutidens belongs to Ficus'
- 'Ficus minutidens belongs to Ficus' according to Knowlton 1918
- 'Ficus missouriensis belongs to Ficus' according to Knowlton 1900
- 'Ficus missouriensis belongs to Ficus'
- 'Ficus montana belongs to Ficus' according to Knowlton 1900
- 'Ficus montana is replaced by Ficus firma'
- 'Ficus montana belongs to Ficus' according to Burmeister 1768
- 'Ficus mudgei belongs to Ficus' according to Lesquereux 1891
- 'Ficus mudgei belongs to Ficus'
- 'Ficus multinervis belongs to Ficus' according to Heer 1856
- 'Ficus multinervis belongs to Ficus'
- 'Ficus myricoides belongs to Ficus' according to Hollick 1895
- 'Ficus myricoides belongs to Ficus'
- 'Ficus myrtifolius belongs to Ficus' according to Berry 1916
- 'Ficus myrtifolius belongs to Ficus'
- 'Ficus navicularis belongs to Ficus'
- 'Ficus navicularis belongs to Ficus' according to Cockerell 1908
- 'Ficus neoplanicostata belongs to Ficus' according to Knowlton 1918
- 'Ficus neoplanicostata belongs to Ficus'
- 'Ficus nervosa is replaced by Ficus evanstonensis'
- 'Ficus nervosa belongs to Ficus' according to Heyne 1821
- 'Ficus nervosa belongs to Ficus' according to Newberry 1882
- 'Ficus neurocarpa belongs to Ficus' according to Hollick 1903
- 'Ficus neurocarpa belongs to Ficus'
- 'Ficus newberryana belongs to Ficus' according to Knowlton 1918
- 'Ficus newberryana belongs to Ficus'
- 'Ficus newtonensis belongs to Ficus' according to Berry 1918
- 'Ficus newtonensis belongs to Ficus'
- 'Ficus oblanceolata belongs to Ficus' according to Lesquereux 1872
- 'Ficus oblanceolata belongs to Ficus'
- 'Ficus oblanceolata is recombined as Pistacia oblanceolata' according to Knowlton 1898
- 'Ficus oregoniana belongs to Ficus' according to Lesquereux 1888
- 'Ficus oregoniana belongs to Ficus'
- 'Ficus ovaliformis belongs to Ficus' according to Cockerell 1910
- 'Ficus ovaliformis belongs to Ficus'
- 'Ficus ovalis belongs to Ficus' according to Lesquereux 1875
- 'Ficus ovalis is replaced by Ficus ovaliformis'
- 'Ficus ovalis belongs to Ficus' according to Miquel 1867
- 'Ficus ovata is corrected as Ficus ovatifolia and belongs to Ficus'
- 'Ficus planicostata belongs to Ficus' according to Lesquereux 1872
- 'Ficus planicostata belongs to Ficus'
- 'Ficus populina belongs to Ficus' according to Heer 1856
- 'Ficus populina belongs to Ficus'
- 'Ficus populoides belongs to Ficus'
- 'Ficus populoides belongs to Ficus' according to Knowlton 1900
- 'Ficus praecursor belongs to Ficus' according to Lesquereux 1891
- 'Ficus praecursor belongs to Ficus'
- 'Ficus praelatifolia belongs to Ficus' according to Knowlton 1916
- 'Ficus praelatifolia belongs to Ficus'
- 'Ficus praesinuosa belongs to Ficus' according to Knowlton and Cockerell 1919
- 'Ficus praetrinervis belongs to Ficus' according to Knowlton 1917
- 'Ficus praetrinervis belongs to Ficus'
- 'Ficus primordialis belongs to Ficus' according to Heer 1866
- 'Ficus primordialis belongs to Ficus'
- 'Ficus problematica belongs to Ficus' according to Knowlton 1900
- 'Ficus problematica belongs to Ficus'
- 'Ficus proteoides belongs to Ficus' according to Lesquereux 1891
- 'Ficus proteoides is a subjective synonym of Ficus daphnogenoides'
- 'Ficus pseudocuspidata belongs to Ficus'
- 'Ficus pseudocuspidata belongs to Ficus' according to Berry 1916
- 'Ficus pseudolmediafolia belongs to Ficus' according to Berry 1916
- 'Ficus pseudolmediafolia is a subjective synonym of Laurus ratonensis'
- 'Ficus pseudopopulus belongs to Ficus' according to Lesquereux 1875
- 'Ficus pseudopopulus belongs to Ficus'
- 'Ficus puryearensis belongs to Ficus' according to Berry 1916
- 'Ficus puryearensis belongs to Ficus'
- 'Ficus ratonensis belongs to Ficus' according to Knowlton 1918
- 'Ficus ratonensis belongs to Ficus'
- 'Ficus regularis belongs to Ficus' according to Knowlton 1917
- 'Ficus regularis belongs to Ficus'
- 'Ficus rhamnoides belongs to Ficus' according to Knowlton 1900
- 'Ficus rhamnoides belongs to Ficus'
- 'Ficus rhomboideus is recombined as Phyllites rhomboideus'
- 'Ficus rhomboideus belongs to Ficus' according to Lesquereux 1868
- 'Ficus rhomboideus is recombined as Phyllites rhomboideus' according to Lesquereux 1874
- 'Ficus richardsoni belongs to Ficus' according to Knowlton 1918
- 'Ficus richardsoni belongs to Ficus'
- 'Ficus richmondensis belongs to Ficus' according to Berry 1909
- 'Ficus richmondensis belongs to Ficus'
- 'Ficus rockvalensis belongs to Ficus'
- 'Ficus rockvalensis belongs to Ficus' according to Knowlton 1918
- 'Ficus rotundata belongs to Ficus' according to Dawson 1893
- 'Ficus rotundata belongs to Ficus'
- 'Ficus russelli belongs to Ficus' according to Knowlton 1911
- 'Ficus russelli belongs to Ficus'
- 'Ficus sapindifolia belongs to Ficus' according to Hollick 1904
- 'Ficus sapindifolia belongs to Ficus'
- 'Ficus schimperi belongs to Ficus' according to Lesquereux 1869
- 'Ficus schimperi belongs to Ficus'
- 'Ficus shastensis belongs to Ficus' according to Lesquereux 1888
- 'Ficus shastensis belongs to Ficus'
- 'Ficus shirleyensis belongs to Ficus' according to Berry 1919
- 'Ficus shirleyensis belongs to Ficus'
- 'Ficus sinuosa belongs to Ficus' according to Ward 1885
- 'Ficus sinuosa is replaced by Ficus praesinuosa'
- 'Ficus sinuosa belongs to Ficus' according to Miquel 1848
- 'Ficus sordida belongs to Ficus'
- 'Ficus speciossima belongs to Ficus' according to Ward 1885
- 'Ficus speciossima belongs to Ficus'
- 'Ficus spectabilis belongs to Ficus' according to Lesquereux 1872
- 'Ficus spectabilis is replaced by Ficus denveriana'
- 'Ficus spectabilis belongs to Ficus' according to Kunth and Bouché 1847
- 'Ficus squarrosa belongs to Ficus' according to Knowlton 1900
- 'Ficus squarrosa belongs to Ficus'
- 'Ficus starkvillensis belongs to Ficus' according to Knowlton 1918
- 'Ficus starkvillensis belongs to Ficus'
- 'Ficus stephensoni belongs to Ficus'
- 'Ficus sternbergii belongs to Ficus' according to Lesquereux 1872
- 'Ficus sternbergii is recombined as Persea sternbergii' according to Lesquereux 1874
- 'Ficus sternbergii is recombined as Persea sternbergii'
- 'Ficus tenuinervis belongs to Ficus' according to Lesquereux 1883
- 'Ficus tenuinervis belongs to Ficus'
- 'Ficus tessellata belongs to Ficus'
- 'Ficus tessellata belongs to Ficus' according to Lesquereux 1878
- 'Ficus trinervis belongs to Ficus' according to Knowlton 1900
- 'Ficus trinervis belongs to Ficus'
- 'Ficus ulmifolia belongs to Ficus' according to Lesquereux 1871
- 'Ficus ulmifolia is corrected as Ficus uncata and belongs to Ficus' according to Lesquereux 1878
- 'Ficus ulmifolia is corrected as Ficus uncata and belongs to Ficus'
- 'Ficus undulata belongs to Ficus' according to Lesquereux 1891
- 'Ficus undulata is replaced by Ficus undulatiformis'
- 'Ficus undulatiformis belongs to Ficus' according to Knowlton and Cockerell 1919
- 'Ficus ungeri belongs to Ficus' according to Lesquereux 1871
- 'Ficus ungeri belongs to Ficus'
- 'Ficus vaughani belongs to Ficus' according to Berry 1916
- 'Ficus vaughani belongs to Ficus'
- 'Ficus viburnifolia belongs to Ficus' according to Ward 1885
- 'Ficus viburnifolia belongs to Ficus'
- 'Ficus virginiensis belongs to Ficus' according to Fontaine 1889
- 'Ficus virginiensis is a subjective synonym of Ficophyllum crassinerve'
- 'Ficus wardii belongs to Ficus' according to Knowlton 1900
- 'Ficus wardii belongs to Ficus'
- 'Ficus wellingtoniae belongs to Ficus' according to Dawson 1893
- 'Ficus wellingtoniae belongs to Ficus'
- 'Ficus wilcoxensis belongs to Ficus' according to Berry 1916
- 'Ficus wilcoxensis belongs to Ficus'
- 'Ficus willisiana belongs to Ficus' according to Hollick 1894
- 'Ficus willisiana belongs to Ficus'
- 'Ficus woolsoni belongs to Ficus' according to Newberry 1892
- 'Ficus woolsoni belongs to Ficus'
- 'Ficus wyomingiana belongs to Ficus' according to Lesquereux 1875
- 'Ficus wyomingiana belongs to Ficus'
- 'Ficus zizyphoides belongs to Ficus' according to Lesquereux 1873
- 'Ficus zizyphoides belongs to Ficus'
- 'Filicales belongs to Filices'
- 'Filices belongs to Pteridophyta'
- 'Filicites nilssoniana [misspelled as Sagenopteris nilsoniana] belongs to Sagenopteris'
- 'Flabellaria belongs to Arecaceae'
- 'Flabellaria eocenica belongs to Flabellaria' according to Lesquereux 1872
- 'Flabellaria eocenica is recombined as Sabal eocenica'
- 'Flabellaria florissanti belongs to Flabellaria' according to Lesquereux 1883
- 'Flabellaria florissanti belongs to Flabellaria'
- 'Flabellaria fructifera is recombined as Sabalites fructifer'
- 'Flabellaria fructifera belongs to Flabellaria' according to Lesquereux 1873
- 'Flabellaria fructifera is recombined as Sabalites fructifer' according to Lesquereux 1878
- 'Flabellaria latania belongs to Flabellaria' according to Rossmässler 1840
- 'Flabellaria latania belongs to Flabellaria'
- 'Flabellaria magothiensis belongs to Flabellaria' according to Berry 1905
- 'Flabellaria magothiensis is recombined as Sabalites magothiensis' according to Berry 1911
- 'Flabellaria magothiensis is recombined as Sabalites magothiensis'
- 'Flabellaria minima belongs to Flabellaria' according to Lesquereux 1883
- 'Flabellaria minima belongs to Flabellaria'
- 'Florissantia belongs to Solanaceae'
- 'Florissantia physalis belongs to Florissantia'
- 'Fontainea belongs to Dicotyledones'
- 'Fontainea grandifolia belongs to Fontainea'
- 'Fontinalaceae belongs to Bryales'
- 'Fontinalis belongs to Fontinalaceae'
- 'Fontinalis pristina belongs to Fontinalis'
- 'Fraxinus belongs to Oleaceae'
- 'Fraxinus abbreviata belongs to Fraxinus' according to Lesquereux 1883
- 'Fraxinus abbreviata belongs to Fraxinus'
- 'Fraxinus affinis belongs to Fraxinus' according to Newberry 1883
- 'Fraxinus affinis is recombined as Quercus affinis' according to Knowlton 1902
- 'Quercus affinis is replaced by Quercus clarnensis'
- 'Fraxinus americana belongs to Fraxinus'
- 'Fraxinus brownellii belongs to Fraxinus'
- 'Fraxinus brownellii belongs to Fraxinus' according to Lesquereux 1878
- 'Fraxinus denticulata belongs to Fraxinus' according to Heer 1868
- 'Fraxinus denticulata belongs to Fraxinus'
- 'Fraxinus eocenica belongs to Fraxinus' according to Lesquereux 1878
- 'Fraxinus eocenica belongs to Fraxinus'
- 'Fraxinus heerii belongs to Fraxinus' according to Lesquereux 1883
- 'Fraxinus heerii belongs to Fraxinus'
- 'Fraxinus herendeenensis belongs to Fraxinus' according to Knowlton 1894
- 'Fraxinus herendeenensis belongs to Fraxinus'
- 'Fraxinus integrifolia belongs to Fraxinus' according to Newberry 1882
- 'Fraxinus integrifolia is replaced by Fraxinus oregonensis'
- 'Fraxinus integrifolia belongs to Fraxinus' according to Moench 1785
- 'Fraxinus johnstrupi belongs to Fraxinus' according to Heer 1878
- 'Fraxinus johnstrupi belongs to Fraxinus'
- 'Fraxinus libbeyi belongs to Fraxinus' according to Lesquereux 1883
- 'Fraxinus libbeyi belongs to Fraxinus'
- 'Fraxinus mespilifolia belongs to Fraxinus'
- 'Fraxinus mespilifolia belongs to Fraxinus' according to Lesquereux 1883
- 'Fraxinus myricaefolia belongs to Fraxinus' according to Lesquereux 1883
- 'Fraxinus myricaefolia belongs to Fraxinus'
- 'Fraxinus nigra belongs to Fraxinus' according to Marshall 1785
- 'Fraxinus nigra belongs to Fraxinus'
- 'Fraxinus oregonensis belongs to Fraxinus' according to Knowlton and Cockerell 1919
- 'Fraxinus palaeophila belongs to Fraxinus' according to Cockerell 1908
- 'Fraxinus palaeophila belongs to Fraxinus'
- 'Fraxinus praedicta belongs to Fraxinus' according to Heer 1859
- 'Fraxinus praedicta belongs to Fraxinus'
- 'Fraxinus quadrangulata belongs to Fraxinus' according to Michaux 1803
- 'Fraxinus quadrangulata belongs to Fraxinus'
- 'Fraxinus richmondensis belongs to Fraxinus'
- 'Fraxinus richmondensis belongs to Fraxinus' according to Berry 1909
- 'Fraxinus ungeri belongs to Fraxinus' according to Lesquereux 1883
- 'Fraxinus ungeri belongs to Fraxinus'
- 'Fraxinus wilcoxiana belongs to Fraxinus' according to Berry 1916
- 'Fraxinus wilcoxiana belongs to Fraxinus'
- 'Fraxinus wrightii belongs to Fraxinus'
- 'Frenelites reichii is recombined as Widdringtonites reichii' according to Heer 1882
- 'Frenelites reichii is recombined as Widdringtonites reichii'
- 'Frenelites reichii belongs to Frenelites' according to Ettingshausen 1867
- 'Frenelopsis belongs to Cupressineae'
- 'Frenelopsis gracilis is recombined as Raritania gracilis'
- 'Frenelopsis gracilis belongs to Frenelopsis' according to Newberry 1895
- 'Frenelopsis gracilis is recombined as Raritania gracilis' according to Hollick and Jeffrey 1909
- 'Frenelopsis hoheneggeri belongs to Frenelopsis'
- 'Frenelopsis parceramosa belongs to Frenelopsis' according to Fontaine 1889
- 'Frenelopsis parceramosa belongs to Frenelopsis'
- 'Frenelopsis ramosissima belongs to Frenelopsis' according to Fontaine 1889
- 'Frenelopsis ramosissima belongs to Frenelopsis'
- 'Frenelopsis varians belongs to Frenelopsis' according to Fontaine 1893
- 'Frenelopsis varians belongs to Frenelopsis'
- 'Fucoides belongs to Algae'
- 'Fucoides connecticutensis belongs to Fucoides' according to Hitchcock 1841
- 'Fucoides connecticutensis belongs to Fucoides'
- 'Fucoides shepardi belongs to Fucoides' according to Hitchcock 1841
- 'Fucoides shepardi belongs to Fucoides'
- 'Fucus belongs to Algae'
- 'Fucus digitatus belongs to Fucus' according to Penhallow 1896
- 'Fucus digitatus belongs to Fucus'
- 'Fucus lignitum belongs to Fucus'
- 'Fucus lignitum belongs to Fucus' according to Lesquereux 1875
- 'Galla quercina belongs to Galla'
- 'Gaylussacia belongs to Ericaceae'
- 'Geaster belongs to Lycoperdiaceae'
- 'Geaster florissantensis belongs to Geaster' according to Cockerell 1908
- 'Geaster florissantensis belongs to Geaster'
- 'Geinitzia belongs to Taxodieae'
- 'Geinitzia formosa belongs to Geinitzia' according to Heer 1871
- 'Geinitzia formosa belongs to Geinitzia'
- 'Geinitzia jenneyi belongs to Geinitzia'
- 'Gentianales belongs to Dicotyledones'
- 'Geonoma belongs to Arecaceae'
- 'Geonoma gigantea belongs to Geonoma' according to Knowlton 1918
- 'Geonoma gigantea belongs to Geonoma'
- 'Geonomites belongs to Arecaceae'
- 'Geonomites is an objective synonym of Geonomites'
- 'Geonomites graminifolius belongs to Geonomites' according to Lesquereux 1888
- 'Geonomites graminifolius belongs to Geonomites'
- 'Geonomites schimperi belongs to Geonomites' according to Lesquereux 1878
- 'Geonomites schimperi belongs to Geonomites'
- 'Geonomites tenuirachis belongs to Geonomites' according to Lesquereux 1878
- 'Geonomites tenuirachis belongs to Geonomites'
- 'Geonomites ungeri belongs to Geonomites' according to Lesquereux 1878
- 'Geonomites ungeri is recombined as Sabal ungeri' according to Knowlton 1918
- 'Geonomites ungeri is recombined as Sabal ungeri'
- 'Geraniales belongs to Dicotyledones'
- 'Gilbertina belongs to Algae'
- 'Gilbertina spiralis belongs to Gilbertina'
- 'Ginkgo belongs to Ginkgoaceae'
- 'Ginkgo acetaria belongs to Ginkgo' according to Ward 1905
- 'Ginkgo acetaria belongs to Ginkgo'
- 'Ginkgo dawsoni belongs to Ginkgo'
- 'Ginkgo laramiensis belongs to Ginkgo' according to Ward 1885
- 'Ginkgo laramiensis belongs to Ginkgo'
- 'Ginkgo lepida belongs to Ginkgo' according to Heer 1885
- 'Ginkgo lepida belongs to Ginkgo'
- 'Ginkgo pusilla belongs to Ginkgo' according to Heer 1876
- 'Ginkgo sibirica belongs to Ginkgo' according to Heer 1885
- 'Ginkgo sibirica belongs to Ginkgo'
- 'Ginkgoaceae belongs to Ginkgoales'
- 'Ginkgoales belongs to Gymnospermae'
- 'Gleditsia belongs to Caesalpiniaceae'
- 'Gleditsia donensis belongs to Gleditsia' according to Penhallow 1907
- 'Gleditsia donensis belongs to Gleditsia'
- 'Gleditsia triacanthos belongs to Gleditsia'
- 'Gleditsiophyllum belongs to Caesalpiniaceae'
- 'Gleditsiophyllum constrictum belongs to Gleditsiophyllum' according to Berry 1916
- 'Gleditsiophyllum constrictum belongs to Gleditsiophyllum'
- 'Gleditsiophyllum ellipticum belongs to Gleditsiophyllum' according to Berry 1916
- 'Gleditsiophyllum ellipticum belongs to Gleditsiophyllum'
- 'Gleditsiophyllum entadaformis belongs to Gleditsiophyllum' according to Berry 1916
- 'Gleditsiophyllum entadaformis belongs to Gleditsiophyllum'
- 'Gleditsiophyllum eocenicum belongs to Gleditsiophyllum'
- 'Gleditsiophyllum fruticosum belongs to Gleditsiophyllum' according to Berry 1916
- 'Gleditsiophyllum fruticosum belongs to Gleditsiophyllum'
- 'Gleditsiophyllum hilgardianum belongs to Gleditsiophyllum' according to Berry 1916
- 'Gleditsiophyllum hilgardianum belongs to Gleditsiophyllum'
- 'Gleditsiophyllum minor belongs to Gleditsiophyllum' according to Berry 1916
- 'Gleditsiophyllum minor belongs to Gleditsiophyllum'
- 'Gleditsiophyllum ovatum belongs to Gleditsiophyllum' according to Berry 1916
- 'Gleditsiophyllum ovatum belongs to Gleditsiophyllum'
- 'Gleditsiophyllum triacanthoides belongs to Gleditsiophyllum'
- 'Gleichenia belongs to Gleicheniaceae'
- 'Gleichenia delawarensis belongs to Gleichenia' according to Berry 1907
- 'Gleichenia delawarensis belongs to Gleichenia'
- 'Gleichenia delicatula belongs to Gleichenia' according to Heer 1874
- 'Gleichenia delicatula belongs to Gleichenia'
- 'Gleichenia giesekiana belongs to Gleichenia' according to Heer 1868
- 'Gleichenia giesekiana belongs to Gleichenia'
- 'Gleichenia gilbertthompsoni belongs to Gleichenia' according to Fontaine 1905
- 'Gleichenia gilbertthompsoni belongs to Gleichenia'
- 'Gleichenia gracilis belongs to Gleichenia' according to Heer 1874
- 'Gleichenia gracilis belongs to Gleichenia'
- 'Gleichenia kurriana belongs to Gleichenia'
- 'Gleichenia kurriana belongs to Gleichenia' according to Heer 1869
- 'Gleichenia micromera belongs to Gleichenia' according to Heer 1874
- 'Gleichenia micromera belongs to Gleichenia'
- 'Gleichenia nordenskioeldi belongs to Gleichenia' according to Heer 1874
- 'Gleichenia nordenskioeldi belongs to Gleichenia'
- 'Gleichenia obscura belongs to Gleichenia' according to Knowlton 1901
- 'Gleichenia obscura belongs to Gleichenia'
- 'Gleichenia protogaea belongs to Gleichenia' according to Debey and Ettingshausen 1906
- 'Gleichenia protogaea belongs to Gleichenia'
- 'Gleichenia pulchella belongs to Gleichenia' according to Knowlton 1913
- 'Gleichenia pulchella belongs to Gleichenia'
- 'Gleichenia rhombifolia belongs to Gleichenia' according to Hollick 1902
- 'Gleichenia rhombifolia belongs to Gleichenia'
- 'Gleichenia saundersii belongs to Gleichenia' according to Berry 1903
- 'Gleichenia saundersii belongs to Gleichenia'
- 'Gleicheniaceae belongs to Filicales'
- 'Glossozamites belongs to Cycadaceae'
- 'Glossozamites distans belongs to Glossozamites' according to Fontaine 1889
- 'Glossozamites distans belongs to Glossozamites'
- 'Glossozamites fontaineanus belongs to Glossozamites' according to Ward 1899
- 'Glossozamites fontaineanus belongs to Glossozamites'
- 'Glyphomitrium belongs to Plantae'
- 'Glyphomitrium cockerelleae belongs to Glyphomitrium' according to Britton and Hollick 1907
- 'Glyphomitrium cockerelleae belongs to Glyphomitrium'
- 'Glyptostrobus belongs to Taxodieae'
- 'Glyptostrobus was reranked as Taxodium (Glyptostrobus) and belongs to Taxodium' according to Fontaine 1890
- 'Glyptostrobus gracillimus belongs to Glyptostrobus' according to Lesquereux 1868
- 'Glyptostrobus gracillimus is recombined as Sequoia gracillima' according to Newberry 1895
- 'Glyptostrobus groenlandicus belongs to Glyptostrobus' according to Heer 1874
- 'Glyptostrobus groenlandicus belongs to Glyptostrobus'
- 'Gnetaceae belongs to Gnetales'
- 'Gnetales belongs to Gymnospermae'
- 'Goniopteris claiborniana belongs to Goniopteris' according to Berry 1917
- 'Goniopteris claiborniana belongs to Goniopteris'
- 'Goniopteris polypodioides belongs to Goniopteris' according to Ettingshausen 1873
- 'Goniopteris polypodioides is recombined as Lastrea polypodioides' according to Lesquereux 1878
- 'Goniopteris polypodioides is recombined as Dryopteris polypodioides' according to Knowlton 1898
- 'Goniopteris polypodioides is recombined as Dryopteris polypodioides'
- 'Goniopteris pulchella belongs to Goniopteris' according to Lesquereux 1875
- 'Goniopteris pulchella belongs to Goniopteris'
- 'Graminales belongs to Monocotyledones'
- 'Gramineae belongs to Graminales'
- 'Graphidiaceae belongs to Hysteriales'
- 'Grewia belongs to Tiliaceae'
- 'Grewia auriculata belongs to Grewia' according to Lesquereux 1883
- 'Grewia auriculata belongs to Grewia'
- 'Grewia celastroides belongs to Grewia'
- 'Grewia celastroides belongs to Grewia' according to Ward 1885
- 'Grewia crenata belongs to Grewia' according to Unger 1855
- 'Grewia crenata belongs to Grewia'
- 'Grewia obovata belongs to Grewia' according to Heer 1876
- 'Grewia obovata belongs to Grewia'
- 'Grewia pealei belongs to Grewia' according to Ward 1885
- 'Grewia pealei belongs to Grewia'
- 'Grewiopsis belongs to Tiliaceae'
- 'Grewiopsis acuminata belongs to Grewiopsis' according to Lesquereux 1887
- 'Grewiopsis acuminata belongs to Grewiopsis'
- 'Grewiopsis aequidentata belongs to Grewiopsis' according to Lesquereux 1891
- 'Grewiopsis aequidentata belongs to Grewiopsis'
- 'Grewiopsis aldersoni belongs to Grewiopsis'
- 'Grewiopsis cleburni belongs to Grewiopsis' according to Lesquereux 1875
- 'Grewiopsis cleburni belongs to Grewiopsis'
- 'Grewiopsis ficifolia belongs to Grewiopsis' according to Ward 1885
- 'Grewiopsis ficifolia is a subjective synonym of Grewiopsis eocenica'
- 'Grewiopsis formosa belongs to Grewiopsis' according to Berry 1919
- 'Grewiopsis formosa belongs to Grewiopsis'
- 'Grewiopsis haydenii belongs to Grewiopsis' according to Lesquereux 1874
- 'Grewiopsis haydenii is a subjective synonym of Grewiopsis flabellata'
- 'Grewiopsis mudgei belongs to Grewiopsis' according to Lesquereux 1891
- 'Grewiopsis mudgei belongs to Grewiopsis'
- 'Grewiopsis paliurifolia belongs to Grewiopsis' according to Ward 1885
- 'Grewiopsis paliurifolia belongs to Grewiopsis'
- 'Grewiopsis platanifolia belongs to Grewiopsis' according to Ward 1885
- 'Grewiopsis platanifolia belongs to Grewiopsis'
- 'Grewiopsis populifolia belongs to Grewiopsis'
- 'Grewiopsis saportanea belongs to Grewiopsis' according to Lesquereux 1878
- 'Grewiopsis saportanea is a subjective synonym of Grewiopsis eocenica'
- 'Grewiopsis tennesseensis belongs to Grewiopsis' according to Berry 1916
- 'Grewiopsis tennesseensis belongs to Grewiopsis'
- 'Grewiopsis tenuifolia belongs to Grewiopsis' according to Lesquereux 1878
- 'Grewiopsis tenuifolia belongs to Grewiopsis'
- 'Grewiopsis tuscaloosensis belongs to Grewiopsis' according to Berry 1919
- 'Grewiopsis tuscaloosensis belongs to Grewiopsis'
- 'Grewiopsis viburnifolia belongs to Grewiopsis' according to Ward 1885
- 'Grewiopsis viburnifolia belongs to Grewiopsis'
- 'Grewiopsis walcotti belongs to Grewiopsis' according to Lesquereux 1887
- 'Grewiopsis walcotti belongs to Grewiopsis'
- 'Grimmiaceae belongs to Bryales'
- 'Grossularia belongs to Grossulariaceae'
- 'Grossularia menziesii belongs to Grossularia' according to Pursh 1911
- 'Grossularia menziesii belongs to Grossularia'
- 'Grossulariaceae belongs to Rosales'
- 'Guatteria belongs to Anonaceae'
- 'Guatteria cretacea belongs to Guatteria' according to Hollick 1906
- 'Guatteria cretacea belongs to Guatteria'
- 'Guettarda belongs to Rubiaceae'
- 'Guettarda ellipticifolia belongs to Guettarda' according to Berry 1916
- 'Guettarda ellipticifolia belongs to Guettarda'
- 'Gyminda belongs to Celastraceae'
- 'Gyminda primordialis belongs to Gyminda' according to Hollick 1906
- 'Gyminda primordialis belongs to Gyminda'
- 'Gymnocaulus alternatus belongs to Gymnocaulus'
- 'Gymnocladus casei belongs to Gymnocladus' according to Berry 1918
- 'Gymnocladus casei belongs to Gymnocladus'
- 'Gymnogramma belongs to Polypodiaceae'
- 'Gymnogramma haydenii belongs to Gymnogramma' according to Lesquereux 1871
- 'Gymnogramma haydenii is recombined as Anemia haydenii' according to Cockerell 1909
- 'Anemia haydenii is a subjective synonym of Anemia elongata'
- 'Gymnospermae was reranked as a class and belongs to Spermatophyta'
- 'Gyrodendron belongs to Algae'
- 'Gyrodendron emersoni belongs to Gyrodendron'
- 'Haloragidaceae belongs to Myrtales'
- 'Halymenites belongs to Algae'
- 'Halymenites major belongs to Halymenites' according to Lesquereux 1872
- 'Halymenites major belongs to Halymenites'
- 'Halymenites striatus belongs to Halymenites' according to Lesquereux 1872
- 'Halymenites striatus belongs to Halymenites'
- 'Hamamelidaceae belongs to Rosales'
- 'Hamamelites belongs to Hamamelidaceae'
- 'Hamamelites cordatus belongs to Hamamelites'
- 'Hamamelites fothergilloides belongs to Hamamelites'
- 'Hamamelites kansaseana belongs to Hamamelites' according to Lesquereux 1874
- 'Hamamelites kansaseana is corrected as Hamamelites kansaseanus and belongs to Hamamelites' according to Lesquereux 1883
- 'Hamamelites kansaseanus is a subjective synonym of Quercus kanseana'
- 'Hamamelites quercifolius belongs to Hamamelites' according to Lesquereux 1883
- 'Hamamelites quercifolius belongs to Hamamelites'
- 'Hamamelites tenuinervis belongs to Hamamelites' according to Lesquereux 1883
- 'Hamamelites tenuinervis belongs to Hamamelites'
- 'Hausmannia belongs to Dipteridinae'
- 'Hausmannia californica belongs to Hausmannia' according to Fontaine 1905
- 'Hausmannia californica belongs to Hausmannia'
- 'Hausmannia rigida is recombined as Newberryana rigida'
- 'Hedera belongs to Vitaceae'
- 'Hedera aquamara belongs to Hedera' according to Ward 1885
- 'Hedera aquamara is recombined as Quercus aquamara' according to Knowlton 1898
- 'Hedera aquamara is recombined as Quercus aquamara'
- 'Hedera auriculata belongs to Hedera' according to Heer 1869
- 'Hedera auriculata belongs to Hedera'
- 'Hedera bruneri belongs to Hedera' according to Ward 1885
- 'Hedera bruneri belongs to Hedera'
- 'Hedera cecilensis belongs to Hedera' according to Berry 1910
- 'Hedera cecilensis belongs to Hedera'
- 'Hedera cretacea belongs to Hedera' according to Lesquereux 1891
- 'Hedera cretacea belongs to Hedera'
- 'Hedera decurrens belongs to Hedera' according to Lesquereux 1891
- 'Hedera decurrens belongs to Hedera'
- 'Hedera macclurii belongs to Hedera' according to Heer 1868
- 'Hedera macclurii belongs to Hedera'
- 'Hedera marginata belongs to Hedera' according to Lesquereux 1883
- 'Hedera marginata belongs to Hedera'
- 'Hedera microphylla belongs to Hedera' according to Lesquereux 1891
- 'Hedera microphylla belongs to Hedera'
- 'Hedera minima belongs to Hedera' according to Ward 1885
- 'Hedera minima belongs to Hedera'
- 'Hedera obliqua belongs to Hedera' according to Newberry 1891
- 'Hedera obliqua belongs to Hedera'
- 'Hedera ovalis belongs to Hedera' according to Lesquereux 1874
- 'Hedera ovalis belongs to Hedera'
- 'Hedera parvula belongs to Hedera' according to Ward 1885
- 'Hedera parvula belongs to Hedera'
- 'Hedera platanoidea belongs to Hedera' according to Lesquereux 1874
- 'Hedera platanoidea belongs to Hedera'
- 'Hedera primordialis belongs to Hedera'
- 'Hedera rotundifolia belongs to Hedera' according to Knowlton 1918
- 'Hedera rotundifolia belongs to Hedera'
- 'Hedera schimperi belongs to Hedera' according to Lesquereux 1875
- 'Hedera schimperi belongs to Hedera'
- 'Hedera simplex belongs to Hedera' according to Hollick 1906
- 'Hedera simplex belongs to Hedera'
- 'Hederaephyllum belongs to Vitaceae'
- 'Hederaephyllum angulatum belongs to Hederaephyllum' according to Fontaine 1889
- 'Hederaephyllum angulatum is a subjective synonym of Araliaephyllum magnifolium'
- 'Hederaephyllum crenulatum belongs to Hederaephyllum'
- 'Helminthoida belongs to Algae'
- 'Helminthoida abnormis belongs to Helminthoida' according to Ulrich 1904
- 'Helminthoida abnormis belongs to Helminthoida'
- 'Helminthoida exacta belongs to Helminthoida' according to Ulrich 1904
- 'Helminthoida exacta belongs to Helminthoida'
- 'Helminthoida subcrassa belongs to Helminthoida' according to Ulrich 1904
- 'Helminthoida subcrassa belongs to Helminthoida'
- 'Helminthoida vaga belongs to Helminthoida' according to Ulrich 1904
- 'Helminthoida vaga belongs to Helminthoida'
- 'Helminthopsis belongs to Algae'
- 'Helminthopsis labyrinthica belongs to Helminthopsis' according to Heer 1877
- 'Helminthopsis labyrinthica belongs to Helminthopsis'
- 'Helminthopsis magna belongs to Helminthopsis'
- 'Hemitelites belongs to Cyatheaceae'
- 'Hemitelites torelli belongs to Hemitelites'
- 'Hemitelites torelli belongs to Hemitelites' according to Heer 1869
- 'Hepaticae belongs to Bryophyta'
- 'Heteranthera belongs to Pontederiaceae'
- 'Heteranthera cretacea belongs to Heteranthera' according to Knowlton 1916
- 'Heteranthera cretacea belongs to Heteranthera'
- 'Heterocalyx belongs to Anacardiaceae'
- 'Heterocalyx saportana belongs to Heterocalyx' according to Berry 1916
- 'Heterocalyx saportana belongs to Heterocalyx'
- 'Heterofilicites belongs to Pteridophyta'
- 'Heterofilicites anceps belongs to Heterofilicites'
- 'Heterolepis belongs to Coniferales'
- 'Heterolepis cretaceus belongs to Heterolepis'
- 'Heyderia coloradensis is recombined as Libocedrus coloradensis' according to Cockerell 1910
- 'Heyderia coloradensis is recombined as Libocedrus coloradensis'
- 'Hicoria belongs to Juglandaceae'
- 'Hicoria biacuminata belongs to Hicoria'
- 'Hicoria biacuminata belongs to Hicoria' according to Perkins 1904
- 'Hicoria crescentia belongs to Hicoria'
- 'Hicoria culveri belongs to Hicoria'
- 'Hicoria magnifica belongs to Hicoria' according to Knowlton 1904
- 'Hicoria magnifica belongs to Hicoria'
- 'Hicoria oregoniana belongs to Hicoria' according to Knowlton 1902
- 'Hicoria oregoniana belongs to Hicoria'
- 'Hicoria pretexana belongs to Hicoria' according to Berry 1916
- 'Hicoria pretexana belongs to Hicoria'
- 'Hicoria princetonia belongs to Hicoria' according to Cockerell 1908
- 'Hicoria princetonia belongs to Hicoria'
- 'Hicoria pseudoglabra belongs to Hicoria' according to Hollick 1906
- 'Hicoria pseudoglabra belongs to Hicoria'
- 'Hicoroides belongs to Juglandaceae'
- 'Hicoroides angulata belongs to Hicoroides'
- 'Hicoroides ellipsoidea belongs to Hicoroides' according to Perkins 1904
- 'Hicoroides ellipsoidea belongs to Hicoroides'
- 'Hicoroides globulus belongs to Hicoroides' according to Perkins 1904
- 'Hicoroides globulus belongs to Hicoroides'
- 'Hicoroides levis belongs to Hicoroides' according to Perkins 1904
- 'Hicoroides levis belongs to Hicoroides'
- 'Hicoroides parva belongs to Hicoroides' according to Perkins 1904
- 'Hicoroides parva belongs to Hicoroides'
- 'Hicoroides triangularis belongs to Hicoroides' according to Perkins 1904
- 'Hicoroides triangularis belongs to Hicoroides'
- 'Hippocastanaceae belongs to Sapindales'
- 'Hippuris belongs to Haloragidaceae'
- 'Hippuris vulgaris belongs to Hippuris'
- 'Hiraea belongs to Malpighiaceae'
- 'Hiraea wilcoxiana belongs to Hiraea' according to Berry 1916
- 'Hiraea wilcoxiana belongs to Hiraea'
- 'Humiriaceae belongs to Geraniales'
- 'Hydrangea belongs to Saxifragaceae'
- 'Hydrangea florissantia belongs to Hydrangea' according to Cockerell 1908
- 'Hydrangea florissantia belongs to Hydrangea'
- 'Hydrangea subincerta belongs to Hydrangea' according to Cockerell 1908
- 'Hydrangea subincerta belongs to Hydrangea'
- 'Hydrocaryaceae belongs to Myrtales'
- 'Hydrocharitaceae belongs to Najadales'
- 'Hydropteraceae belongs to Marattiales'
- 'Hymenaea belongs to Caesalpiniaceae'
- 'Hymenaea dakotana belongs to Hymenaea' according to Lesquereux 1891
- 'Hymenaea dakotana belongs to Hymenaea'
- 'Hymenaea fayettensis belongs to Hymenaea' according to Berry 1919
- 'Hymenaea fayettensis belongs to Hymenaea'
- 'Hymenaea primigenia belongs to Hymenaea' according to Saporta 1879
- 'Hymenaea primigenia belongs to Hymenaea'
- 'Hymenaea virginiensis belongs to Hymenaea' according to Fontaine 1889
- 'Hymenaea virginiensis belongs to Hymenaea'
- 'Hymenophyllaceae belongs to Filicales'
- 'Hymenophyllum belongs to Hymenophyllaceae'
- 'Hymenophyllum confusum belongs to Hymenophyllum' according to Lesquereux 1873
- 'Hymenophyllum confusum belongs to Hymenophyllum'
- 'Hymenophyllum cretaceum belongs to Hymenophyllum'
- 'Hymenophyllum cretaceum belongs to Hymenophyllum' according to Lesquereux 1872
- 'Hymenopteris is a subjective synonym of Onychiopsis'
- 'Hymenopteris psilotoides is recombined as Onychiopsis psilotoides' according to Ward 1905
- 'Hymenopteris psilotoides is recombined as Onychiopsis psilotoides'
- 'Hypnaceae belongs to Bryales'
- 'Hypnum belongs to Hypnaceae'
- 'Hypnum brownii belongs to Hypnum' according to Kirchner 1898
- 'Hypnum brownii belongs to Hypnum'
- 'Hypnum columbianum belongs to Hypnum' according to Penhallow 1890
- 'Hypnum columbianum belongs to Hypnum'
- 'Hypnum commutatum belongs to Hypnum' according to Hedwig 1801
- 'Hypnum commutatum belongs to Hypnum'
- 'Hypnum fluitans belongs to Hypnum' according to Hedwig 1801
- 'Hypnum fluitans belongs to Hypnum'
- 'Hypnum haydenii is recombined as Juniperus haydenii' according to Knowlton 1916
- 'Hypnum haydenii is recombined as Juniperus haydenii'
- 'Hypnum recurvans belongs to Hypnum' according to Schwegler 1896
- 'Hypnum recurvans belongs to Hypnum'
- 'Hypnum revalvens belongs to Hypnum' according to Swartz 1878
- 'Hypnum revalvens belongs to Hypnum'
- 'Hypnum richardsoni belongs to Hypnum' according to Holzinger 1903
- 'Hypnum richardsoni belongs to Hypnum'
- 'Hypolepis belongs to Polypodiaceae'
- 'Hypolepis coloradensis belongs to Hypolepis' according to Cockerell 1909
- 'Hypolepis coloradensis belongs to Hypolepis'
- 'Hysteriales belongs to Ascomycota'
- 'Icacorea belongs to Myrsinaceae'
- 'Icacorea prepaniculata belongs to Icacorea' according to Berry 1916
- 'Icacorea prepaniculata belongs to Icacorea'
- 'Ilex belongs to Ilicaceae'
- 'Ilex affinis belongs to Ilex' according to Lesquereux 1871
- 'Ilex affinis belongs to Ilex'
- 'Ilex amboyensis belongs to Ilex' according to Berry 1909
- 'Ilex amboyensis belongs to Ilex'
- 'Ilex armata belongs to Ilex' according to Lesquereux 1891
- 'Ilex armata belongs to Ilex'
- 'Ilex borealis belongs to Ilex' according to Heer 1883
- 'Ilex borealis belongs to Ilex'
- 'Ilex calvertensis belongs to Ilex' according to Berry 1916
- 'Ilex calvertensis belongs to Ilex'
- 'Ilex cassine belongs to Ilex'
- 'Ilex dakotensis belongs to Ilex' according to Lesquereux 1891
- 'Ilex dakotensis belongs to Ilex'
- 'Ilex dissimilis belongs to Ilex' according to Lesquereux 1878
- 'Ilex dissimilis belongs to Ilex'
- 'Ilex elongata belongs to Ilex' according to Newberry 1895
- 'Ilex elongata belongs to Ilex'
- 'Ilex eolignitica belongs to Ilex' according to Berry 1916
- 'Ilex eolignitica belongs to Ilex'
- 'Ilex florissantensis belongs to Ilex' according to Knowlton and Cockerell 1919
- 'Ilex glabra belongs to Ilex'
- 'Ilex glabra belongs to Ilex' according to Gray 1856
- 'Ilex grandifolia belongs to Ilex' according to Lesquereux 1883
- 'Ilex grandifolia belongs to Ilex'
- 'Ilex insignis belongs to Ilex' according to Heer 1869
- 'Ilex insignis belongs to Ilex'
- 'Ilex knightiaefolia belongs to Ilex' according to Lesquereux 1883
- 'Ilex knightiaefolia belongs to Ilex'
- 'Ilex leonis belongs to Ilex' according to Cockerell 1906
- 'Ilex leonis belongs to Ilex'
- 'Ilex maculata belongs to Ilex' according to Lesquereux 1883
- 'Ilex maculata belongs to Ilex'
- 'Ilex masoni belongs to Ilex'
- 'Ilex microphylla belongs to Ilex' according to Newberry 1882
- 'Ilex microphylla is replaced by Ilex microphyllina'
- 'Ilex microphylla belongs to Ilex' according to Lesquereux 1883
- 'Ilex microphylla is replaced by Ilex florissantensis'
- 'Ilex microphylla belongs to Ilex' according to Hooker 1862
- 'Ilex microphyllina belongs to Ilex' according to Knowlton and Cockerell 1919
- 'Ilex opaca belongs to Ilex' according to Aiton 1789
- 'Ilex opaca belongs to Ilex'
- 'Ilex ovata belongs to Ilex' according to Göppert 1852
- 'Ilex ovata belongs to Ilex' according to Newberry 1896
- 'Ilex ovata is replaced by Ilex amboyensis'
- 'Ilex papillosa belongs to Ilex' according to Lesquereux 1891
- 'Ilex papillosa belongs to Ilex'
- 'Ilex prunifolia belongs to Ilex'
- 'Ilex pseudostenophylla belongs to Ilex' according to Lesquereux 1883
- 'Ilex pseudostenophylla belongs to Ilex'
- 'Ilex quercifolia belongs to Ilex' according to Meerburgh 1798
- 'Ilex quercifolia belongs to Ilex' according to Lesquereux 1883
- 'Ilex quercifolia is replaced by Ilex leonis'
- 'Ilex rigida belongs to Ilex' according to Kirchner 1898
- 'Ilex rigida is a subjective synonym of Ilex knightiaefolia'
- 'Ilex scudderi belongs to Ilex' according to Lesquereux 1891
- 'Ilex scudderi belongs to Ilex'
- 'Ilex severnensis belongs to Ilex' according to Berry 1911
- 'Ilex severnensis belongs to Ilex'
- 'Ilex sphenophylla belongs to Ilex' according to Heer 1873
- 'Ilex sphenophylla belongs to Ilex'
- 'Ilex strangulata belongs to Ilex' according to Lesquereux 1875
- 'Ilex strangulata belongs to Ilex'
- 'Ilex subdenticulata belongs to Ilex' according to Lesquereux 1873
- 'Ilex subdenticulata belongs to Ilex'
- 'Ilex vomitoriafolia belongs to Ilex' according to Berry 1916
- 'Ilex vomitoriafolia belongs to Ilex'
- 'Ilex wyomingiana belongs to Ilex' according to Lesquereux 1878
- 'Ilex wyomingiana belongs to Ilex'
- 'Ilicaceae belongs to Sapindales'
- 'Illicium belongs to Magnoliaceae'
- 'Illicium deletoides belongs to Illicium' according to Berry 1916
- 'Illicium deletoides belongs to Illicium'
- 'Illicium lignitum belongs to Illicium' according to Lesquereux 1861
- 'Illicium lignitum belongs to Illicium'
- 'Illicium watereensis belongs to Illicium'
- 'Inga belongs to Mimosaceae'
- 'Inga cretacea belongs to Inga' according to Lesquereux 1891
- 'Inga cretacea belongs to Inga'
- 'Inga heterophylla belongs to Inga' according to Knowlton 1918
- 'Inga heterophylla belongs to Inga'
- 'Inga laurinafolia belongs to Inga' according to Berry 1916
- 'Inga laurinafolia belongs to Inga'
- 'Inga mississippiensis belongs to Inga' according to Berry 1916
- 'Inga mississippiensis belongs to Inga'
- 'Inga puryearensis belongs to Inga' according to Berry 1916
- 'Inga puryearensis belongs to Inga'
- 'Inga wickliffensis belongs to Inga' according to Berry 1916
- 'Inga wickliffensis belongs to Inga'
- 'Inolepis belongs to Taxodieae'
- 'Iridaceae belongs to Liliales'
- 'Iris belongs to Iridaceae'
- 'Irites alaskana is a subjective synonym of Zamites megaphyllus'
- 'Isoetaceae belongs to Isoetales'
- 'Isoetales belongs to Pteridophyta'
- 'Isoetes belongs to Isoetaceae'
- 'Isoetes brevifolius belongs to Isoetes' according to Lesquereux 1883
- 'Isoetes brevifolius belongs to Isoetes'
- 'Juglandaceae belongs to Juglandales'
- 'Juglandales belongs to Dicotyledones'
- 'Juglandiphyllum belongs to Juglandaceae'
- 'Juglandiphyllum integrifolium belongs to Juglandiphyllum'
- 'Juglandites belongs to Juglandaceae'
- 'Juglandites costatus belongs to Juglandites' according to Presl 1833
- 'Juglandites costatus is a subjective synonym of Juglans sepultus'
- 'Juglandites cretacea belongs to Juglandites' according to Dawson 1885
- 'Juglandites cretacea belongs to Juglandites'
- 'Juglandites ellsworthianus belongs to Juglandites' according to Lesquereux 1891
- 'Juglandites ellsworthianus belongs to Juglandites'
- 'Juglandites fallax belongs to Juglandites' according to Dawson 1893
- 'Juglandites fallax belongs to Juglandites'
- 'Juglandites lacoei belongs to Juglandites' according to Lesquereux 1891
- 'Juglandites lacoei belongs to Juglandites'
- 'Juglandites primordialis belongs to Juglandites' according to Lesquereux 1891
- 'Juglandites primordialis belongs to Juglandites'
- 'Juglandites sinuatus belongs to Juglandites' according to Lesquereux 1891
- 'Juglandites sinuatus belongs to Juglandites'
- 'Juglans belongs to Juglandaceae'
- 'Juglans acuminata belongs to Juglans'
- 'Juglans acuminata belongs to Juglans' according to Braun 1845
- 'Juglans affinis belongs to Juglans' according to Kirchner 1898
- 'Juglans affinis belongs to Juglans'
- 'Juglans alkalina belongs to Juglans' according to Lesquereux 1875
- 'Juglans alkalina belongs to Juglans'
- 'Juglans appressa belongs to Juglans' according to Lesquereux 1869
- 'Juglans appressa belongs to Juglans'
- 'Juglans arctica belongs to Juglans'
- 'Juglans baltica belongs to Juglans' according to Heer 1882
- 'Juglans baltica belongs to Juglans'
- 'Juglans bendirei belongs to Juglans' according to Knowlton 1902
- 'Juglans bendirei belongs to Juglans'
- 'Juglans berryi belongs to Juglans' according to Knowlton 1916
- 'Juglans berryi belongs to Juglans'
- 'Juglans bilinica is recombined as Carya bilinica' according to Lesquereux 1883
- 'Carya bilinica is a subjective synonym of Hicoria juglandiformis'
- 'Juglans bilinica belongs to Juglans' according to Unger 1850
- 'Juglans brandonianus belongs to Juglans' according to Perkins 1904
- 'Juglans brandonianus belongs to Juglans'
- 'Juglans californica is replaced by Juglans leonis'
- 'Juglans cinerea belongs to Juglans'
- 'Juglans coloradensis belongs to Juglans' according to Lesquereux 1918
- 'Juglans coloradensis belongs to Juglans'
- 'Juglans crassifolia belongs to Juglans' according to Knowlton 1902
- 'Juglans crassifolia belongs to Juglans'
- 'Juglans crassipes belongs to Juglans' according to Heer 1869
- 'Juglans crassipes belongs to Juglans'
- 'Juglans crescentia belongs to Juglans'
- 'Juglans crossii belongs to Juglans' according to Knowlton 1898
- 'Juglans crossii belongs to Juglans'
- 'Juglans cryptata belongs to Juglans' according to Knowlton 1902
- 'Juglans cryptata belongs to Juglans'
- 'Juglans dentata belongs to Juglans' according to Newberry 1882
- 'Juglans dentata belongs to Juglans'
- 'Juglans denticulata is replaced by Juglans crossii'
- 'Juglans denticulata belongs to Juglans' according to Weber 1852
- 'Juglans denticulata is recombined as Pterocarya denticulata' according to Heer 1859
- 'Juglans denticulata is recombined as Pterocarya denticulata'
- 'Juglans egregia belongs to Juglans'
- 'Juglans elaenoides is recombined as Hicoria elaenoides'
- 'Juglans elaenoides belongs to Juglans' according to Unger 1850
- 'Juglans elaenoides is recombined as Carya elaenoides' according to Lesquereux 1888
- 'Juglans elaenoides is recombined as Hicoria elaenoides' according to Knowlton 1898
- 'Juglans elongata belongs to Juglans' according to Hollick 1906
- 'Juglans elongata belongs to Juglans'
- 'Juglans florissanti belongs to Juglans' according to Lesquereux 1883
- 'Juglans florissanti belongs to Juglans'
- 'Juglans harwoodensis belongs to Juglans' according to Dawson 1882
- 'Juglans harwoodensis belongs to Juglans'
- 'Juglans hesperia belongs to Juglans' according to Knowlton 1898
- 'Juglans hesperia is a subjective synonym of Juglans oregoniana'
- 'Juglans laurifolia belongs to Juglans'
- 'Juglans laurinea belongs to Juglans'
- 'Juglans leconteana belongs to Juglans' according to Lesquereux 1870
- 'Juglans leconteana belongs to Juglans'
- 'Juglans leonis belongs to Juglans' according to Cockerell 1908
- 'Juglans leonis belongs to Juglans'
- 'Juglans magnifica belongs to Juglans' according to Knowlton 1916
- 'Juglans magnifica belongs to Juglans'
- 'Juglans minutidens belongs to Juglans' according to Knowlton 1918
- 'Juglans minutidens belongs to Juglans'
- 'Juglans missouriensis belongs to Juglans' according to Knowlton 1900
- 'Juglans missouriensis belongs to Juglans'
- 'Juglans nigella belongs to Juglans' according to Heer 1869
- 'Juglans nigella belongs to Juglans'
- 'Juglans nigra belongs to Juglans'
- 'Juglans obtusifolia belongs to Juglans' according to Heer 1859
- 'Juglans obtusifolia belongs to Juglans'
- 'Juglans occidentalis belongs to Juglans' according to Newberry 1882
- 'Juglans occidentalis belongs to Juglans'
- 'Juglans oregoniana belongs to Juglans'
- 'Juglans picroides belongs to Juglans' according to Heer 1869
- 'Juglans picroides belongs to Juglans'
- 'Juglans rhamnoides belongs to Juglans' according to Lesquereux 1871
- 'Juglans rhamnoides belongs to Juglans'
- 'Juglans rostrata belongs to Juglans' according to Göppert 1861
- 'Juglans rostrata is recombined as Carya rostrata' according to Schimper 1874
- 'Juglans rostrata is recombined as Hicoria rostrata' according to Knowlton 1898
- 'Juglans rostrata is recombined as Hicoria rostrata'
- 'Juglans rugosa belongs to Juglans' according to Lesquereux 1868
- 'Juglans rugosa belongs to Juglans'
- 'Juglans saffordiana belongs to Juglans' according to Lesquereux 1869
- 'Juglans saffordiana belongs to Juglans'
- 'Juglans sapindiformis belongs to Juglans' according to Knowlton 1918
- 'Juglans sapindiformis belongs to Juglans'
- 'Juglans sapindoides belongs to Juglans' according to Knowlton 1918
- 'Juglans sapindoides belongs to Juglans'
- 'Juglans schimperi belongs to Juglans'
- 'Juglans schimperi belongs to Juglans' according to Lesquereux 1871
- 'Juglans sepultus belongs to Juglans' according to Cockerell 1908
- 'Juglans sepultus belongs to Juglans'
- 'Juglans similis belongs to Juglans' according to Knowlton 1918
- 'Juglans similis belongs to Juglans'
- 'Juglans smithsoniana is recombined as Ficus smithsoniana' according to Lesquereux 1878
- 'Juglans smithsoniana is recombined as Ficus smithsoniana'
- 'Juglans smithsoniana belongs to Juglans' according to Lesquereux 1871
- 'Juglans thermalis belongs to Juglans' according to Lesquereux 1871
- 'Juglans thermalis belongs to Juglans'
- 'Juglans townsendi belongs to Juglans' according to Knowlton 1894
- 'Juglans townsendi belongs to Juglans'
- 'Juglans ungeri belongs to Juglans' according to Heer 1859
- 'Juglans ungeri belongs to Juglans'
- 'Juglans vetusta belongs to Juglans' according to Heer 1859
- 'Juglans vetusta belongs to Juglans'
- 'Juglans woodiana belongs to Juglans'
- 'Juglans woodiana belongs to Juglans' according to Heer 1865
- 'Juncaceae belongs to Liliales'
- 'Juncus belongs to Juncaceae'
- 'Juncus crassulus belongs to Juncus' according to Cockerell 1908
- 'Juncus crassulus belongs to Juncus'
- 'Jungermannites cretaceus belongs to Jungermannites' according to Berry 1919
- 'Jungermannites cretaceus belongs to Jungermannites'
- 'Juniperus belongs to Cupressineae'
- 'Juniperus californica belongs to Juniperus' according to Carrière 1850
- 'Juniperus californica belongs to Juniperus'
- 'Juniperus hypnoides belongs to Juniperus' according to Heer 1882
- 'Juniperus hypnoides belongs to Juniperus'
- 'Juniperus virginiana belongs to Juniperus'
- 'Kalmia belongs to Ericaceae'
- 'Kalmia brittoniana belongs to Kalmia' according to Hollick 1892
- 'Kalmia brittoniana belongs to Kalmia'
- 'Knightiophyllum belongs to Proteaceae'
- 'Knightiophyllum wilcoxianum belongs to Knightiophyllum'
- 'Knowltonella belongs to Matoniaceae'
- 'Knowltonella maxoni belongs to Knowltonella'
- 'Laboulbiliaceae belongs to Laboulbiliales'
- 'Laboulbiliales belongs to Ascomycota'
- 'Laccopteris belongs to Matoniaceae'
- 'Laccopteris elegans belongs to Laccopteris'
- 'Laccopteris emmonsi belongs to Laccopteris' according to Fontaine 1883
- 'Laccopteris emmonsi is a subjective synonym of Asterocarpus falcatus'
- 'Laguncularia belongs to Combretaceae'
- 'Laguncularia preracemosa belongs to Laguncularia' according to Berry 1916
- 'Laguncularia preracemosa belongs to Laguncularia'
- 'Laricopsis belongs to Abietineae'
- 'Laricopsis angustifolia belongs to Laricopsis' according to Fontaine 1889
- 'Laricopsis angustifolia belongs to Laricopsis'
- 'Laricopsis brevifolia belongs to Laricopsis' according to Fontaine 1889
- 'Laricopsis brevifolia is a subjective synonym of Laricopsis angustifolia'
- 'Laricopsis longifolia belongs to Laricopsis'
- 'Larix belongs to Abietineae'
- 'Larix churchbridgensis belongs to Larix' according to Penhallow 1892
- 'Larix churchbridgensis belongs to Larix'
- 'Larix laricina belongs to Larix' according to Koch 1873
- 'Larix laricina belongs to Larix'
- 'Lastrea belongs to Polypodiaceae'
- 'Lastrea fischeri belongs to Lastrea' according to Heer 1855
- 'Lastrea fischeri belongs to Lastrea'
- 'Lastrea knightiana belongs to Lastrea' according to Newberry 1882
- 'Lastrea knightiana is a subjective synonym of Lastrea fischeri'
- 'Lastrea styriaca belongs to Lastrea' according to Heer 1855
- 'Lastrea styriaca belongs to Lastrea'
- 'Lathraea belongs to Plantae'
- 'Lathraea arguta belongs to Lathraea' according to Lesquereux 1868
- 'Lathraea arguta is recombined as Dryopteris arguta' according to Knowlton 1898
- 'Lathraea arguta is recombined as Dryopteris arguta'
- 'Lauraceae belongs to Thymeleales'
- 'Laurinoxylon belongs to Lauraceae'
- 'Laurinoxylon aromaticum belongs to Laurinoxylon' according to Felix 1884
- 'Laurinoxylon aromaticum is recombined as Perseoxylon aromaticum' according to Felix 1887
- 'Laurinoxylon aromaticum is recombined as Perseoxylon aromaticum'
- 'Laurinoxylon brandonianum belongs to Laurinoxylon' according to Jeffrey and Chrysler 1906
- 'Laurinoxylon brandonianum belongs to Laurinoxylon'
- 'Laurinoxylon branneri belongs to Laurinoxylon' according to Knowlton 1889
- 'Laurinoxylon branneri belongs to Laurinoxylon'
- 'Laurinoxylon lesquereuxiana belongs to Laurinoxylon' according to Knowlton 1889
- 'Laurinoxylon lesquereuxiana belongs to Laurinoxylon'
- 'Laurinoxylon pulchrum belongs to Laurinoxylon'
- 'Laurophyllum belongs to Lauraceae'
- 'Laurophyllum angustifolium belongs to Laurophyllum' according to Newberry 1895
- 'Laurophyllum angustifolium belongs to Laurophyllum'
- 'Laurophyllum debile belongs to Laurophyllum' according to Dawson 1882
- 'Laurophyllum debile belongs to Laurophyllum'
- 'Laurophyllum elegans belongs to Laurophyllum'
- 'Laurophyllum florum belongs to Laurophyllum' according to Berry 1916
- 'Laurophyllum florum belongs to Laurophyllum'
- 'Laurophyllum insigne belongs to Laurophyllum' according to Dawson 1893
- 'Laurophyllum insigne belongs to Laurophyllum'
- 'Laurophyllum juvenalis belongs to Laurophyllum' according to Berry 1916
- 'Laurophyllum juvenalis belongs to Laurophyllum'
- 'Laurophyllum lanceolatum belongs to Laurophyllum' according to Newberry 1895
- 'Laurophyllum lanceolatum belongs to Laurophyllum'
- 'Laurophyllum minus belongs to Laurophyllum' according to Newberry 1895
- 'Laurophyllum minus belongs to Laurophyllum'
- 'Laurophyllum nervillosum belongs to Laurophyllum'
- 'Laurophyllum ocoteaeoides belongs to Laurophyllum' according to Hollick 1912
- 'Laurophyllum ocoteaeoides belongs to Laurophyllum'
- 'Laurophyllum preflorum belongs to Laurophyllum' according to Berry 1916
- 'Laurophyllum preflorum belongs to Laurophyllum'
- 'Laurophyllum reticulatum belongs to Laurophyllum' according to Lesquereux 1872
- 'Laurophyllum reticulatum is a subjective synonym of Ficus laurophylla'
- 'Laurus belongs to Lauraceae'
- 'Laurus acuminata belongs to Laurus' according to Newberry 1882
- 'Laurus acuminata is replaced by Laurus palaeophila'
- 'Laurus acuminata belongs to Laurus' according to Brown 1864
- 'Laurus angusta belongs to Laurus' according to Heer 1882
- 'Laurus angusta is a subjective synonym of Laurus atanensis'
- 'Laurus antecedens belongs to Laurus'
- 'Laurus atanensis belongs to Laurus'
- 'Laurus baueri belongs to Laurus' according to Knowlton 1916
- 'Laurus baueri belongs to Laurus'
- 'Laurus brossiana belongs to Laurus' according to Lesquereux 1878
- 'Laurus brossiana is recombined as Persea brossiana'
- 'Laurus californica belongs to Laurus' according to Lesquereux 1883
- 'Laurus californica belongs to Laurus'
- 'Laurus cascadia belongs to Laurus' according to Duror 1916
- 'Laurus cascadia belongs to Laurus'
- 'Laurus caudata belongs to Laurus' according to Knowlton 1918
- 'Laurus caudata belongs to Laurus'
- 'Laurus colombi belongs to Laurus' according to Heer 1865
- 'Laurus colombi belongs to Laurus'
- 'Laurus coloradensis belongs to Laurus' according to Knowlton 1917
- 'Laurus coloradensis belongs to Laurus'
- 'Laurus crassinervis belongs to Laurus' according to Dawson 1882
- 'Laurus crassinervis belongs to Laurus'
- 'Laurus fuerstenbergii belongs to Laurus' according to Braun 1850
- 'Laurus fuerstenbergii belongs to Laurus'
- 'Laurus grandis belongs to Laurus'
- 'Laurus hollae belongs to Laurus' according to Heer 1882
- 'Laurus hollae belongs to Laurus'
- 'Laurus hollickii belongs to Laurus' according to Berry 1903
- 'Laurus hollickii belongs to Laurus'
- 'Laurus knowltoni belongs to Laurus' according to Lesquereux 1891
- 'Laurus knowltoni belongs to Laurus'
- 'Laurus macrocarpa belongs to Laurus' according to Lesquereux 1868
- 'Laurus macrocarpa belongs to Laurus'
- 'Laurus microcarpa belongs to Laurus'
- 'Laurus microcarpa belongs to Laurus' according to Lesquereux 1891
- 'Laurus modesta belongs to Laurus' according to Lesquereux 1883
- 'Laurus modesta belongs to Laurus'
- 'Laurus montana belongs to Laurus'
- 'Laurus newberryana belongs to Laurus' according to Hollick 1892
- 'Laurus newberryana belongs to Laurus'
- 'Laurus ocoteoides belongs to Laurus' according to Lesquereux 1878
- 'Laurus ocoteoides is a subjective synonym of Laurus wardiana'
- 'Laurus omalii belongs to Laurus' according to Saporta and Marion 1873
- 'Laurus omalii belongs to Laurus'
- 'Laurus oregoniana belongs to Laurus' according to Knowlton 1902
- 'Laurus oregoniana belongs to Laurus'
- 'Laurus palaeophila belongs to Laurus' according to Knowlton and Cockerell 1919
- 'Laurus pedatus belongs to Laurus' according to Lesquereux 1869
- 'Laurus pedatus is recombined as Osmanthus pedatus' according to Berry 1916
- 'Laurus pedatus is recombined as Osmanthus pedatus'
- 'Laurus perdita belongs to Laurus'
- 'Laurus plutonia belongs to Laurus'
- 'Laurus praestans belongs to Laurus' according to Lesquereux 1875
- 'Laurus praestans belongs to Laurus'
- 'Laurus primigenia belongs to Laurus' according to Unger 1850
- 'Laurus primigenia belongs to Laurus'
- 'Laurus princeps belongs to Laurus' according to Heer 1856
- 'Laurus princeps belongs to Laurus'
- 'Laurus proteaefolia belongs to Laurus' according to Lesquereux 1875
- 'Laurus proteaefolia belongs to Laurus'
- 'Laurus ratonensis belongs to Laurus' according to Knowlton 1918
- 'Laurus ratonensis belongs to Laurus'
- 'Laurus resurgens belongs to Laurus' according to Saporta 1866
- 'Laurus resurgens belongs to Laurus'
- 'Laurus salicifolia is corrected as Laurus saliciformis and belongs to Laurus'
- 'Laurus salicifolia belongs to Laurus' according to Banks and Solander 1838
- 'Laurus schmidtiana belongs to Laurus' according to Heer 1878
- 'Laurus schmidtiana belongs to Laurus'
- 'Laurus sessiliflora belongs to Laurus' according to Lesquereux 1873
- 'Laurus sessiliflora is recombined as Tetranthera sessiliflora' according to Lesquereux 1878
- 'Laurus sessiliflora is recombined as Malapoenna sessiliflora' according to Knowlton 1898
- 'Laurus sessiliflora is recombined as Malapoenna sessiliflora'
- 'Laurus socialis belongs to Laurus'
- 'Laurus teliformis belongs to Laurus' according to Lesquereux 1891
- 'Laurus teliformis belongs to Laurus'
- 'Laurus utahensis belongs to Laurus' according to Lesquereux 1878
- 'Laurus utahensis belongs to Laurus'
- 'Laurus wardiana belongs to Laurus' according to Knowlton 1898
- 'Laurus wardiana belongs to Laurus'
- 'Lebephyllum belongs to Urticaceae'
- 'Lebephyllum reineckei belongs to Lebephyllum'
- 'Leguminosae belongs to Rosales'
- 'Leguminosites belongs to Papilionaceae'
- 'Leguminosites alternans belongs to Leguminosites' according to Lesquereux 1875
- 'Leguminosites alternans belongs to Leguminosites'
- 'Leguminosites atanensis belongs to Leguminosites' according to Heer 1874
- 'Leguminosites atanensis belongs to Leguminosites'
- 'Leguminosites borealis belongs to Leguminosites' according to Dawson 1889
- 'Leguminosites borealis belongs to Leguminosites'
- 'Leguminosites canavalioides belongs to Leguminosites' according to Berry 1916
- 'Leguminosites canavalioides belongs to Leguminosites'
- 'Leguminosites cassioides belongs to Leguminosites' according to Lesquereux 1878
- 'Leguminosites cassioides is replaced by Leguminosites lesquereuxiana'
- 'Leguminosites cassioides belongs to Leguminosites' according to Engelhardt 1870
- 'Leguminosites constrictus belongs to Leguminosites' according to Lesquereux 1891
- 'Leguminosites constrictus belongs to Leguminosites'
- 'Leguminosites convolutus belongs to Leguminosites' according to Lesquereux 1891
- 'Leguminosites convolutus belongs to Leguminosites'
- 'Leguminosites coronilloides belongs to Leguminosites' according to Heer 1874
- 'Leguminosites coronilloides belongs to Leguminosites'
- 'Leguminosites cultriformis belongs to Leguminosites'
- 'Leguminosites cultriformis belongs to Leguminosites' according to Lesquereux 1883
- 'Leguminosites dakotensis belongs to Leguminosites' according to Lesquereux 1891
- 'Leguminosites dakotensis belongs to Leguminosites'
- 'Leguminosites hymenophyllus belongs to Leguminosites' according to Lesquereux 1891
- 'Leguminosites hymenophyllus belongs to Leguminosites'
- 'Leguminosites ingaefolia belongs to Leguminosites' according to Berry 1919
- 'Leguminosites ingaefolia belongs to Leguminosites'
- 'Leguminosites insularis belongs to Leguminosites' according to Heer 1882
- 'Leguminosites insularis belongs to Leguminosites'
- 'Leguminosites lamarensis belongs to Leguminosites'
- 'Leguminosites lesquereuxiana belongs to Leguminosites' according to Knowlton 1898
- 'Leguminosites lesquereuxiana belongs to Leguminosites'
- 'Leguminosites marcouanus belongs to Leguminosites' according to Heer 1858
- 'Leguminosites marcouanus is recombined as Bumelia marcouana' according to Lesquereux 1874
- 'Leguminosites marcouanus is recombined as Liriodendron marcouanum'
- 'Leguminosites middendorfensis belongs to Leguminosites'
- 'Leguminosites neomexicana belongs to Leguminosites' according to Knowlton 1916
- 'Leguminosites neomexicana belongs to Leguminosites'
- 'Leguminosites omphalobioides belongs to Leguminosites' according to Lesquereux 1891
- 'Leguminosites omphalobioides belongs to Leguminosites'
- 'Leguminosites perfoliatus belongs to Leguminosites' according to Berry 1916
- 'Leguminosites perfoliatus belongs to Leguminosites'
- 'Leguminosites phaseolites belongs to Leguminosites' according to Heer 1874
- 'Leguminosites phaseolites belongs to Leguminosites'
- 'Leguminosites pisiformis belongs to Leguminosites' according to Heer 1859
- 'Leguminosites pisiformis belongs to Leguminosites'
- 'Leguminosites podogonialis belongs to Leguminosites' according to Lesquereux 1891
- 'Leguminosites podogonialis belongs to Leguminosites'
- 'Leguminosites raritanensis belongs to Leguminosites' according to Berry 1909
- 'Leguminosites raritanensis belongs to Leguminosites'
- 'Leguminosites reniformis belongs to Leguminosites'
- 'Leguminosites robiniifolia belongs to Leguminosites'
- 'Leguminosites serrulatus belongs to Leguminosites' according to Lesquereux 1883
- 'Leguminosites serrulatus is a subjective synonym of Ptelea modesta'
- 'Leguminosites shirleyensis belongs to Leguminosites' according to Berry 1919
- 'Leguminosites shirleyensis belongs to Leguminosites'
- 'Leguminosites subovatus belongs to Leguminosites'
- 'Leguminosites truncatus belongs to Leguminosites' according to Knowlton 1891
- 'Leguminosites truncatus belongs to Leguminosites'
- 'Leguminosites tuscaloosensis belongs to Leguminosites' according to Berry 1919
- 'Leguminosites tuscaloosensis belongs to Leguminosites'
- 'Leguminosites wickliffensis belongs to Leguminosites' according to Berry 1916
- 'Leguminosites wickliffensis belongs to Leguminosites'
- 'Leitneria belongs to Plantae'
- 'Leitneria floridana belongs to Leitneria' according to Chapman 1860
- 'Leitneria floridana belongs to Leitneria'
- 'Lemna belongs to Lemnaceae'
- 'Lemna (Spirodela) scutata is recombined as Lemna scutata'
- 'Lemna (Spirodela) scutata belongs to Lemna (Spirodela)' according to Dawson 1875
- 'Lemna bullata belongs to Lemna' according to Lesquereux 1875
- 'Lemna bullata belongs to Lemna'
- 'Lemna penicillata belongs to Lemna' according to Lesquereux 1883
- 'Lemna penicillata is recombined as Spirodela penicillata' according to Cockerell 1906
- 'Lemna penicillata is recombined as Spirodela penicillata'
- 'Lemnaceae belongs to Arales'
- 'Lepacyclotes circularis belongs to Lepacyclotes'
- 'Lepacyclotes ellipticus belongs to Lepacyclotes'
- 'Lepidostrobus belongs to Coniferales'
- 'Leptostrobus alatus belongs to Leptostrobus' according to Ward 1899
- 'Leptostrobus alatus belongs to Leptostrobus'
- 'Leptostrobus foliosus belongs to Leptostrobus' according to Fontaine 1890
- 'Leptostrobus foliosus is recombined as Abietites foliosus'
- 'Leptostrobus longifolius belongs to Leptostrobus' according to Fontaine 1890
- 'Leptostrobus longifolius is recombined as Abietites longifolius'
- 'Leptostrobus mariposensis belongs to Leptostrobus' according to Fontaine 1900
- 'Leptostrobus mariposensis belongs to Leptostrobus'
- 'Leptostrobus multiflorus belongs to Leptostrobus' according to Fontaine 1889
- 'Leptostrobus multiflorus belongs to Leptostrobus'
- 'Leptostrobus ovalis belongs to Leptostrobus' according to Ward 1905
- 'Leptostrobus ovalis belongs to Leptostrobus'
- 'Lescuria attenuata belongs to Lescuria'
- 'Leucaena coloradensis belongs to Leucaena' according to Cockerell 1908
- 'Leucaena coloradensis belongs to Leucaena'
- 'Leucothoe belongs to Ericaceae'
- 'Libocedrus belongs to Cupressineae'
- 'Libocedrus cretacea belongs to Libocedrus' according to Heer 1882
- 'Libocedrus cretacea is recombined as Thuja cretacea' according to Newberry 1895
- 'Libocedrus cretacea is recombined as Thuja cretacea'
- 'Ligustrum belongs to Oleaceae'
- 'Ligustrum subtile belongs to Ligustrum' according to Hollick 1912
- 'Ligustrum subtile belongs to Ligustrum'
- 'Liliaceae belongs to Liliales'
- 'Liliales belongs to Monocotyledones'
- 'Limnobium belongs to Vallisneriaceae'
- 'Limnobium obliteratum belongs to Limnobium' according to Cockerell 1908
- 'Limnobium obliteratum belongs to Limnobium'
- 'Lindera masoni belongs to Lindera' according to Lesquereux 1891
- 'Lindera masoni is recombined as Benzoin masoni' according to Knowlton 1898
- 'Lindera masoni is recombined as Benzoin masoni'
- 'Lindera venusta belongs to Lindera' according to Lesquereux 1891
- 'Lindera venusta is recombined as Benzoin venustum' according to Knowlton 1898
- 'Lindera venusta is recombined as Benzoin venustum'
- 'Liquidambar belongs to Hamamelidaceae'
- 'Liquidambar californicum belongs to Liquidambar'
- 'Liquidambar convexum belongs to Liquidambar' according to Cockerell 1908
- 'Liquidambar convexum belongs to Liquidambar'
- 'Liquidambar cucharas belongs to Liquidambar' according to Knowlton 1918
- 'Liquidambar cucharas belongs to Liquidambar'
- 'Liquidambar europaeum belongs to Liquidambar'
- 'Liquidambar europaeum belongs to Liquidambar' according to Braun 1836
- 'Liquidambar gracilis belongs to Liquidambar' according to Lesquereux 1871
- 'Liquidambar gracilis is recombined as Aralia gracilis' according to Lesquereux 1878
- 'Liquidambar gracilis is recombined as Aralia gracilis'
- 'Liquidambar integrifolium belongs to Liquidambar' according to Lesquereux 1868
- 'Liquidambar integrifolium is a subjective synonym of Liquidambar obtusilobatus'
- 'Liquidambar pachyphyllum belongs to Liquidambar' according to Knowlton 1902
- 'Liquidambar pachyphyllum belongs to Liquidambar'
- 'Liquidambar protensum belongs to Liquidambar' according to Unger 1888
- 'Liquidambar protensum belongs to Liquidambar'
- 'Liquidambar styraciflua belongs to Liquidambar'
- 'Liriodendron belongs to Magnoliaceae'
- 'Liriodendron acuminatum belongs to Liriodendron' according to Lesquereux 1881
- 'Liriodendron acuminatum belongs to Liriodendron'
- 'Liriodendron alatum belongs to Liriodendron'
- 'Liriodendron alatum belongs to Liriodendron' according to Newberry 1894
- 'Liriodendron attenuatum belongs to Liriodendron' according to Hollick 1906
- 'Liriodendron attenuatum belongs to Liriodendron'
- 'Liriodendron cruciforme belongs to Liriodendron' according to Lesquereux 1881
- 'Liriodendron cruciforme is a subjective synonym of Liriodendron giganteum'
- 'Liriodendron dubium belongs to Liriodendron' according to Berry 1907
- 'Liriodendron dubium belongs to Liriodendron'
- 'Liriodendron giganteum belongs to Liriodendron' according to Lesquereux 1868
- 'Liriodendron giganteum belongs to Liriodendron'
- 'Liriodendron intermedium belongs to Liriodendron' according to Lesquereux 1868
- 'Liriodendron intermedium belongs to Liriodendron'
- 'Liriodendron laramiense belongs to Liriodendron' according to Ward 1885
- 'Liriodendron laramiense belongs to Liriodendron'
- 'Liriodendron meekii belongs to Liriodendron' according to Heer 1858
- 'Liriodendron meekii belongs to Liriodendron'
- 'Liriodendron morganensis belongs to Liriodendron' according to Berry 1906
- 'Liriodendron morganensis belongs to Liriodendron'
- 'Liriodendron oblongifolium belongs to Liriodendron' according to Newberry 1887
- 'Liriodendron oblongifolium belongs to Liriodendron'
- 'Liriodendron pinnatifidum belongs to Liriodendron' according to Lesquereux 1881
- 'Liriodendron pinnatifidum belongs to Liriodendron'
- 'Liriodendron praetulipiferum belongs to Liriodendron' according to Dawson 1893
- 'Liriodendron praetulipiferum belongs to Liriodendron'
- 'Liriodendron primaevum belongs to Liriodendron' according to Newberry 1868
- 'Liriodendron primaevum is a subjective synonym of Liriodendron marcouanum'
- 'Liriodendron quercifolium belongs to Liriodendron' according to Newberry 1887
- 'Liriodendron quercifolium belongs to Liriodendron'
- 'Liriodendron semialatum belongs to Liriodendron' according to Lesquereux 1881
- 'Liriodendron semialatum belongs to Liriodendron'
- 'Liriodendron snowii belongs to Liriodendron' according to Lesquereux 1891
- 'Liriodendron snowii belongs to Liriodendron'
- 'Liriodendron succedens belongs to Liriodendron' according to Dawson 1893
- 'Liriodendron succedens belongs to Liriodendron'
- 'Liriodendron tulipifera belongs to Liriodendron'
- 'Liriodendron wellingtonii belongs to Liriodendron' according to Lesquereux 1891
- 'Liriodendron wellingtonii belongs to Liriodendron'
- 'Liriodendropsis belongs to Magnoliaceae'
- 'Liriodendropsis angustifolia belongs to Liriodendropsis' according to Newberry 1895
- 'Liriodendropsis angustifolia belongs to Liriodendropsis'
- 'Liriodendropsis constricta belongs to Liriodendropsis' according to Ward 1895
- 'Liriodendropsis constricta belongs to Liriodendropsis'
- 'Liriodendropsis simplex belongs to Liriodendropsis'
- 'Liriodendropsis spectabilis belongs to Liriodendropsis' according to Hollick 1906
- 'Liriodendropsis spectabilis belongs to Liriodendropsis'
- 'Liriophyllum belongs to Dicotyledones'
- 'Liriophyllum beckwithii belongs to Liriophyllum'
- 'Liriophyllum obcordatum belongs to Liriophyllum' according to Lesquereux 1883
- 'Liriophyllum obcordatum belongs to Liriophyllum'
- 'Liriophyllum populoides belongs to Liriophyllum' according to Lesquereux 1876
- 'Liriophyllum populoides belongs to Liriophyllum'
- 'Litsea carbonensis belongs to Litsea' according to Ward 1885
- 'Litsea carbonensis is recombined as Malapoenna carbonensis' according to Knowlton 1898
- 'Litsea carbonensis is recombined as Malapoenna carbonensis'
- 'Litsea cretacea belongs to Litsea' according to Lesquereux 1891
- 'Litsea cretacea is recombined as Malapoenna cretacea'
- 'Litsea cuneata is recombined as Malapoenna cuneata'
- 'Litsea falcifolia belongs to Litsea' according to Lesquereux 1891
- 'Litsea falcifolia is recombined as Malapoenna falcifolia'
- 'Litsea weediana belongs to Litsea' according to Knowlton 1893
- 'Litsea weediana is recombined as Malapoenna weediana' according to Knowlton 1898
- 'Litsea weediana is recombined as Malapoenna weediana'
- 'Lomatia belongs to Proteaceae'
- 'Lomatia abbreviata belongs to Lomatia' according to Lesquereux 1883
- 'Lomatia abbreviata belongs to Lomatia'
- 'Lomatia acutiloba belongs to Lomatia' according to Lesquereux 1883
- 'Lomatia acutiloba belongs to Lomatia'
- 'Lomatia hakeaefolia belongs to Lomatia' according to Lesquereux 1883
- 'Lomatia hakeaefolia is recombined as Lomatites hakeaefolia' according to Cockerell 1908
- 'Lomatia hakeaefolia is recombined as Lomatites hakeaefolia'
- 'Lomatia interrupta belongs to Lomatia' according to Lesquereux 1883
- 'Lomatia interrupta belongs to Lomatia'
- 'Lomatia microphylla belongs to Lomatia' according to Lesquereux 1875
- 'Lomatia microphylla belongs to Lomatia'
- 'Lomatia spinosa belongs to Lomatia' according to Lesquereux 1883
- 'Lomatia spinosa is recombined as Lomatites spinosa' according to Cockerell 1908
- 'Lomatia spinosa is recombined as Lomatites spinosa'
- 'Lomatia terminalis belongs to Lomatia' according to Lesquereux 1883
- 'Lomatia terminalis belongs to Lomatia'
- 'Lomatia tripartita belongs to Lomatia' according to Lesquereux 1883
- 'Lomatia tripartita belongs to Lomatia'
- 'Lomatites belongs to Proteaceae'
- 'Lonchocarpus belongs to Papilionaceae'
- 'Lonchocarpus novaecaesareae belongs to Lonchocarpus' according to Hollick 1896
- 'Lonchocarpus novaecaesareae belongs to Lonchocarpus'
- 'Lonchopteris belongs to Pteridophyta'
- 'Lonchopteris virginiensis belongs to Lonchopteris' according to Fontaine 1883
- 'Lonchopteris virginiensis belongs to Lonchopteris'
- 'Loperia belongs to Algae'
- 'Loperia simplex belongs to Loperia'
- 'Loranthaceae belongs to Santalales'
- 'Lycoperdiaceae belongs to Lycoperdiales'
- 'Lycoperdiales belongs to Basidiomycota'
- 'Lycopodiaceae belongs to Lycopodiales'
- 'Lycopodiales belongs to Pteridophyta'
- 'Lycopodites belongs to Lycopodiaceae'
- 'Lycopodites curvifolius belongs to Lycopodites' according to Dunker 1846
- 'Lycopodites curvifolius is recombined as Elatides curvifolia' according to Nathorst 1897
- 'Lycopodites curvifolius is recombined as Elatides curvifolia'
- 'Lycopodites eoligniticus belongs to Lycopodites' according to Berry 1916
- 'Lycopodites eoligniticus belongs to Lycopodites'
- 'Lycopodites montanensis belongs to Lycopodites' according to Fontaine 1905
- 'Lycopodites montanensis belongs to Lycopodites'
- 'Lycopodites tuscaloosensis belongs to Lycopodites' according to Berry 1919
- 'Lycopodites tuscaloosensis belongs to Lycopodites'
- 'Lycopodium belongs to Lycopodiaceae'
- 'Lycopodium cretaceum belongs to Lycopodium'
- 'Lycopodium lesquereuxiana belongs to Lycopodium' according to Knowlton 1897
- 'Lycopodium lesquereuxiana belongs to Lycopodium'
- 'Lycopodium lesquereuxiana [misspelled as Lycopodium lesquereuxii] belongs to Lycopodium' according to Knowlton 1898
- 'Lycopodium prominens belongs to Lycopodium' according to Lesquereux 1873
- 'Lycopodium prominens belongs to Lycopodium'
- 'Lygodium belongs to Schizaeaceae'
- 'Lygodium compactum belongs to Lygodium' according to Lesquereux 1868
- 'Lygodium compactum belongs to Lygodium'
- 'Lygodium dentoni belongs to Lygodium' according to Lesquereux 1875
- 'Lygodium dentoni belongs to Lygodium'
- 'Lygodium kaulfussi is corrected as Lygodium kaulfussii and belongs to Lygodium'
- 'Lygodium marvinei belongs to Lygodium' according to Lesquereux 1875
- 'Lygodium marvinei belongs to Lygodium'
- 'Lygodium neuropteroides belongs to Lygodium' according to Lesquereux 1870
- 'Lygodium neuropteroides is a subjective synonym of Lygodium kaulfussii'
- 'Lygodium trichomanoides belongs to Lygodium' according to Lesquereux 1874
- 'Lygodium trichomanoides belongs to Lygodium'
- 'Lysimachia belongs to Primulaceae'
- 'Macclintockia belongs to Proteaceae'
- 'Macclintockia cretacea belongs to Macclintockia' according to Heer 1882
- 'Macclintockia cretacea belongs to Macclintockia'
- 'Macclintockia lyallii belongs to Macclintockia' according to Heer 1868
- 'Macclintockia lyallii belongs to Macclintockia'
- 'Macclintockia trinervis belongs to Macclintockia' according to Heer 1868
- 'Macclintockia trinervis belongs to Macclintockia'
- 'Macreightia belongs to Plantae'
- 'Macreightia crassa belongs to Macreightia' according to Lesquereux 1883
- 'Macreightia crassa is recombined as Populus crassa' according to Cockerell 1908
- 'Macreightia crassa is recombined as Populus crassa'
- 'Macrotaeniopteris belongs to Pteridophyta'
- 'Macrotaeniopteris californica belongs to Macrotaeniopteris' according to Fontaine 1896
- 'Macrotaeniopteris californica belongs to Macrotaeniopteris'
- 'Macrotaeniopteris crassinervis belongs to Macrotaeniopteris'
- 'Macrotaeniopteris crassinervis belongs to Macrotaeniopteris' according to Feistmantel 1877
- 'Macrotaeniopteris nervosa belongs to Macrotaeniopteris' according to Fontaine 1896
- 'Macrotaeniopteris nervosa belongs to Macrotaeniopteris'
- 'Macrotaeniopteris vancouverensis belongs to Macrotaeniopteris' according to Dawson 1893
- 'Macrotaeniopteris vancouverensis belongs to Macrotaeniopteris'
- 'Magnolia belongs to Magnoliaceae'
- 'Magnolia acuminata belongs to Magnolia'
- 'Magnolia alternans belongs to Magnolia' according to Heer 1866
- 'Magnolia alternans belongs to Magnolia'
- 'Magnolia amplifolia belongs to Magnolia' according to Heer 1869
- 'Magnolia amplifolia belongs to Magnolia'
- 'Magnolia angustifolia belongs to Magnolia' according to Newberry 1882
- 'Magnolia angustifolia belongs to Magnolia'
- 'Magnolia boulayana belongs to Magnolia'
- 'Magnolia californica belongs to Magnolia'
- 'Magnolia capellinii belongs to Magnolia'
- 'Magnolia coalvillensis belongs to Magnolia' according to Knowlton 1918
- 'Magnolia coalvillensis belongs to Magnolia'
- 'Magnolia cordifolia belongs to Magnolia'
- 'Magnolia cordifolia belongs to Magnolia' according to Lesquereux 1869
- 'Magnolia culveri belongs to Magnolia'
- 'Magnolia dayana belongs to Magnolia' according to Cockerell 1910
- 'Magnolia dayana belongs to Magnolia'
- 'Magnolia elliptica belongs to Magnolia' according to Newberry 1898
- 'Magnolia elliptica belongs to Magnolia'
- 'Magnolia ensifolia belongs to Magnolia' according to Lesquereux 1871
- 'Magnolia ensifolia is recombined as Celastrophyllum ensifolium' according to Lesquereux 1874
- 'Magnolia ensifolia is recombined as Celastrophyllum ensifolium'
- 'Magnolia florissanticola belongs to Magnolia' according to Cockerell 1910
- 'Magnolia florissanticola belongs to Magnolia'
- 'Magnolia hilgardiana belongs to Magnolia' according to Lesquereux 1860
- 'Magnolia hilgardiana belongs to Magnolia'
- 'Magnolia hollicki belongs to Magnolia' according to Berry 1909
- 'Magnolia hollicki belongs to Magnolia'
- 'Magnolia inglefieldi belongs to Magnolia'
- 'Magnolia inglefieldi belongs to Magnolia' according to Heer 1868
- 'Magnolia inquirenda belongs to Magnolia' according to Knowlton 1918
- 'Magnolia inquirenda belongs to Magnolia'
- 'Magnolia isbergiana belongs to Magnolia' according to Heer 1882
- 'Magnolia isbergiana belongs to Magnolia'
- 'Magnolia lacoeana belongs to Magnolia' according to Lesquereux 1891
- 'Magnolia lacoeana belongs to Magnolia'
- 'Magnolia lanceolata is replaced by Magnolia dayana'
- 'Magnolia laurifolia belongs to Magnolia' according to Lesquereux 1869
- 'Magnolia laurifolia belongs to Magnolia'
- 'Magnolia leei belongs to Magnolia' according to Knowlton 1916
- 'Magnolia leei belongs to Magnolia'
- 'Magnolia lesleyana belongs to Magnolia' according to Lesquereux 1869
- 'Magnolia lesleyana belongs to Magnolia'
- 'Magnolia longifolia belongs to Magnolia' according to Newberry 1892
- 'Magnolia longifolia is replaced by Magnolia newberryi'
- 'Magnolia longipes belongs to Magnolia'
- 'Magnolia longipes belongs to Magnolia' according to Newberry 1894
- 'Magnolia magnifica belongs to Magnolia' according to Dawson 1882
- 'Magnolia magnifica belongs to Magnolia'
- 'Magnolia magnifolia belongs to Magnolia' according to Knowlton 1918
- 'Magnolia microphylla belongs to Magnolia'
- 'Magnolia newberryi belongs to Magnolia'
- 'Magnolia nordenskioeldi belongs to Magnolia' according to Heer 1877
- 'Magnolia nordenskioeldi belongs to Magnolia'
- 'Magnolia obovata belongs to Magnolia' according to Newberry 1868
- 'Magnolia obovata is a subjective synonym of Nyssa vetusta'
- 'Magnolia obtusata belongs to Magnolia'
- 'Magnolia occidentalis belongs to Magnolia' according to Dawson 1893
- 'Magnolia occidentalis belongs to Magnolia'
- 'Magnolia ovalis belongs to Magnolia' according to Lesquereux 1869
- 'Magnolia ovalis is recombined as Combretum ovalis' according to Berry 1916
- 'Magnolia ovalis is recombined as Combretum ovalis'
- 'Magnolia palaeopetala belongs to Magnolia' according to Hollick 1903
- 'Magnolia palaeopetala belongs to Magnolia'
- 'Magnolia pollardi belongs to Magnolia'
- 'Magnolia pseudoacuminata belongs to Magnolia' according to Lesquereux 1891
- 'Magnolia pseudoacuminata belongs to Magnolia'
- 'Magnolia pulchra belongs to Magnolia' according to Ward 1885
- 'Magnolia pulchra belongs to Magnolia'
- 'Magnolia regalis belongs to Magnolia' according to Heer 1877
- 'Magnolia regalis belongs to Magnolia'
- 'Magnolia rotundifolia belongs to Magnolia' according to Newberry 1882
- 'Magnolia rotundifolia belongs to Magnolia'
- 'Magnolia speciosa belongs to Magnolia' according to Heer 1869
- 'Magnolia speciosa belongs to Magnolia'
- 'Magnolia spectabilis belongs to Magnolia'
- 'Magnolia tenuifolia belongs to Magnolia'
- 'Magnolia tenuinervis belongs to Magnolia' according to Lesquereux 1878
- 'Magnolia tenuinervis belongs to Magnolia'
- 'Magnolia vaningenii belongs to Magnolia' according to Hollick 1894
- 'Magnolia vaningenii belongs to Magnolia'
- 'Magnolia virginiana belongs to Magnolia'
- 'Magnolia woodbridgensis belongs to Magnolia'
- 'Magnolia woodbridgensis belongs to Magnolia' according to Hollick 1895
- 'Magnoliaceae belongs to Ranales'
- 'Majanthemophyllum belongs to Liliaceae'
- 'Majanthemophyllum grandifolium belongs to Majanthemophyllum' according to Penhallow 1902
- 'Majanthemophyllum grandifolium belongs to Majanthemophyllum'
- 'Majanthemophyllum pusillum belongs to Majanthemophyllum' according to Heer 1883
- 'Majanthemophyllum pusillum belongs to Majanthemophyllum'
- 'Malapoenna belongs to Lauraceae'
- 'Malapoenna cottondalensis belongs to Malapoenna' according to Berry 1919
- 'Malapoenna cottondalensis belongs to Malapoenna'
- 'Malapoenna horrellensis belongs to Malapoenna'
- 'Malapoenna lamarensis belongs to Malapoenna'
- 'Malpighiaceae belongs to Geraniales'
- 'Malus belongs to Pomaceae'
- 'Malus coronarifolia belongs to Malus' according to Berry 1907
- 'Malus coronarifolia belongs to Malus'
- 'Malus pseudoangustifolia belongs to Malus' according to Berry 1912
- 'Malus pseudoangustifolia belongs to Malus'
- 'Malvaceae belongs to Malvales'
- 'Malvales belongs to Dicotyledones'
- 'Malvastrum belongs to Malvaceae'
- 'Malvastrum exhumatum belongs to Malvastrum' according to Cockerell 1906
- 'Malvastrum exhumatum belongs to Malvastrum'
- 'Manicaria belongs to Arecaceae'
- 'Manicaria haydenii belongs to Manicaria' according to Newberry 1882
- 'Manicaria haydenii belongs to Manicaria'
- 'Manihotites belongs to Malvaceae'
- 'Manihotites georgiana belongs to Manihotites'
- 'Marattia belongs to Marattiaceae'
- 'Marattia cretacea belongs to Marattia' according to Velenovsky 1919
- 'Marattia cretacea belongs to Marattia'
- 'Marattiaceae belongs to Marattiales'
- 'Marattiales belongs to Filices'
- 'Marchantia belongs to Marchantiaceae'
- 'Marchantia pealei belongs to Marchantia' according to Knowlton 1908
- 'Marchantia pealei belongs to Marchantia'
- 'Marchantiaceae belongs to Marchantiales'
- 'Marchantiales belongs to Hepaticae'
- 'Marchantites belongs to Marchantiaceae'
- 'Marchantites (Fucoides) erectus is recombined as Marchantites erectus' according to Seward 1898
- 'Marchantites (Fucoides) erectus is recombined as Marchantites erectus'
- 'Marsilea belongs to Marsileaceae'
- 'Marsilea andersoni belongs to Marsilea' according to Hollick 1904
- 'Marsilea andersoni belongs to Marsilea'
- 'Marsilea bendirei belongs to Marsilea' according to Ward 1885
- 'Marsilea bendirei is recombined as Porana bendirei' according to Lesquereux 1888
- 'Marsilea bendirei is recombined as Hydrangea bendirei' according to Knowlton 1901
- 'Marsilea bendirei is recombined as Hydrangea bendirei'
- 'Marsileaceae belongs to Filicales'
- 'Matoniaceae belongs to Filicales'
- 'Matonidium belongs to Matoniaceae'
- 'Maytenus belongs to Celastraceae'
- 'Maytenus puryearensis belongs to Maytenus' according to Berry 1916
- 'Maytenus puryearensis belongs to Maytenus'
- 'Melanconiales belongs to Fungi'
- 'Melastomataceae [misspelled as Melastomaceae] belongs to Myrtales'
- 'Melastomites belongs to Melastomaceae'
- 'Melastomites americanus belongs to Melastomites' according to Berry 1916
- 'Melastomites americanus belongs to Melastomites'
- 'Melia belongs to Meliaceae'
- 'Melia expulsa belongs to Melia' according to Cockerell 1908
- 'Melia expulsa belongs to Melia'
- 'Meliaceae belongs to Geraniales'
- 'Melothria belongs to Cucurbitaceae'
- 'Melothria coloradensis belongs to Melothria' according to Cockerell 1908
- 'Melothria coloradensis belongs to Melothria'
- 'Meniphylloides belongs to Polypodiaceae'
- 'Meniphylloides ettingshauseni belongs to Meniphylloides'
- 'Menispermaceae belongs to Ranales'
- 'Menispermites belongs to Menispermaceae'
- 'Menispermites acerifolia belongs to Menispermites' according to Lesquereux 1874
- 'Menispermites acerifolia is a subjective synonym of Menispermites menispermifolius'
- 'Menispermites acutilobus belongs to Menispermites' according to Lesquereux 1883
- 'Menispermites acutilobus belongs to Menispermites'
- 'Menispermites borealis belongs to Menispermites' according to Heer 1882
- 'Menispermites borealis belongs to Menispermites'
- 'Menispermites brysoniana belongs to Menispermites' according to Hollick 1894
- 'Menispermites brysoniana belongs to Menispermites'
- 'Menispermites californicus belongs to Menispermites' according to Fontaine 1905
- 'Menispermites californicus belongs to Menispermites'
- 'Menispermites cyclophyllus belongs to Menispermites' according to Lesquereux 1874
- 'Menispermites cyclophyllus belongs to Menispermites'
- 'Menispermites grandis belongs to Menispermites' according to Lesquereux 1883
- 'Menispermites grandis belongs to Menispermites'
- 'Menispermites integrifolia belongs to Menispermites' according to Berry 1917
- 'Menispermites integrifolia belongs to Menispermites'
- 'Menispermites ovalis belongs to Menispermites' according to Lesquereux 1875
- 'Menispermites ovalis belongs to Menispermites'
- 'Menispermites populifolius belongs to Menispermites' according to Lesquereux 1874
- 'Menispermites populifolius belongs to Menispermites'
- 'Menispermites potomacensis belongs to Menispermites' according to Berry 1912
- 'Menispermites potomacensis belongs to Menispermites'
- 'Menispermites reniformis belongs to Menispermites' according to Dawson 1882
- 'Menispermites reniformis belongs to Menispermites'
- 'Menispermites rugosus belongs to Menispermites' according to Lesquereux 1891
- 'Menispermites rugosus belongs to Menispermites'
- 'Menispermites tenuinervis belongs to Menispermites' according to Fontaine 1889
- 'Menispermites tenuinervis is recombined as Nelumbites tenuinervis'
- 'Menispermites trilobatus belongs to Menispermites' according to Berry 1919
- 'Menispermites trilobatus belongs to Menispermites'
- 'Menispermites variabilis belongs to Menispermites'
- 'Menispermites virginiensis is recombined as Nelumbites virginiensis'
- 'Menispermites wardianus belongs to Menispermites' according to Hollick 1895
- 'Menispermites wardianus belongs to Menispermites'
- 'Menispermites wilcoxensis belongs to Menispermites' according to Berry 1916
- 'Menispermites wilcoxensis belongs to Menispermites'
- 'Menispermum carolinum is recombined as Cebatha carolina' according to Britton 1894
- 'Menispermum carolinum is recombined as Cebatha carolina'
- 'Menyanthaceae belongs to Gentianales'
- 'Menyanthes belongs to Menyanthaceae'
- 'Menyanthes coloradensis belongs to Menyanthes' according to Cockerell 1908
- 'Menyanthes coloradensis belongs to Menyanthes'
- 'Menyanthes trifoliata belongs to Menyanthes'
- 'Mertensides belongs to Marattiaceae'
- 'Mertensides distans belongs to Mertensides' according to Fontaine 1883
- 'Mertensides distans belongs to Mertensides'
- 'Mespilodaphne belongs to Lauraceae'
- 'Mespilodaphne coushatta belongs to Mespilodaphne' according to Berry 1916
- 'Mespilodaphne coushatta belongs to Mespilodaphne'
- 'Mespilodaphne pseudoglauca belongs to Mespilodaphne' according to Berry 1916
- 'Mespilodaphne pseudoglauca belongs to Mespilodaphne'
- 'Mespilodaphne puryearensis belongs to Mespilodaphne' according to Berry 1916
- 'Mespilodaphne puryearensis belongs to Mespilodaphne'
- 'Metopium belongs to Anacardiaceae'
- 'Metopium wilcoxianum belongs to Metopium' according to Berry 1916
- 'Metopium wilcoxianum belongs to Metopium'
- 'Mezoneuron belongs to Plantae'
- 'Mezoneuron bridgetonense belongs to Mezoneuron' according to Hollick 1896
- 'Mezoneuron bridgetonense belongs to Mezoneuron'
- 'Microtaenia belongs to Polypodiaceae'
- 'Microtaenia variabilis belongs to Microtaenia'
- 'Microzamia belongs to Cycadaceae'
- 'Microzamia dubia belongs to Microzamia' according to Berry 1905
- 'Microzamia dubia belongs to Microzamia'
- 'Mimosa belongs to Mimosaceae'
- 'Mimosa americana belongs to Mimosa' according to Berry 1914
- 'Mimosa americana belongs to Mimosa'
- 'Mimosa carolinensis belongs to Mimosa' according to Berry 1914
- 'Mimosa carolinensis belongs to Mimosa'
- 'Mimosaceae belongs to Rosales'
- 'Mimosites belongs to Mimosaceae'
- 'Mimosites acaciaefolius belongs to Mimosites' according to Berry 1916
- 'Mimosites acaciaefolius belongs to Mimosites'
- 'Mimosites georgianus belongs to Mimosites'
- 'Mimosites inaequilateralis belongs to Mimosites' according to Berry 1916
- 'Mimosites inaequilateralis belongs to Mimosites'
- 'Mimosites lanceolatus belongs to Mimosites' according to Berry 1916
- 'Mimosites lanceolatus belongs to Mimosites'
- 'Mimosites linearifolius belongs to Mimosites' according to Lesquereux 1878
- 'Mimosites linearifolius is a subjective synonym of Mimosites linearis'
- 'Mimosites variabilis belongs to Mimosites' according to Berry 1916
- 'Mimosites variabilis belongs to Mimosites'
- 'Mimulus belongs to Scrophulariaceae'
- 'Mimulus saxorum belongs to Mimulus'
- 'Mimulus saxorum belongs to Mimulus' according to Cockerell 1908
- 'Mimusops belongs to Sapotaceae'
- 'Mimusops eolignitica belongs to Mimusops' according to Berry 1916
- 'Mimusops eolignitica is a subjective synonym of Mimusops truncata'
- 'Mimusops mississippiensis belongs to Mimusops' according to Berry 1916
- 'Mimusops mississippiensis belongs to Mimusops'
- 'Mimusops siberifolia belongs to Mimusops' according to Berry 1916
- 'Mimusops siberifolia belongs to Mimusops'
- 'Moniliaceae belongs to Moniliales'
- 'Moniliales belongs to Fungi'
- 'Monimiaceae belongs to Ranales'
- 'Monimiopsis belongs to Monimiaceae'
- 'Monimiopsis amboraefolia belongs to Monimiopsis' according to Saporta 1868
- 'Monimiopsis fraterna belongs to Monimiopsis' according to Saporta 1868
- 'Monimiopsis fraterna belongs to Monimiopsis'
- 'Monocarpellites amygdaloidus belongs to Monocarpellites' according to Perkins 1906
- 'Monocarpellites amygdaloidus belongs to Monocarpellites'
- 'Monocarpellites elegans belongs to Monocarpellites'
- 'Monocarpellites elegans belongs to Monocarpellites' according to Perkins 1904
- 'Monocarpellites gibbosus belongs to Monocarpellites' according to Perkins 1904
- 'Monocarpellites gibbosus belongs to Monocarpellites'
- 'Monocarpellites hitchcockii belongs to Monocarpellites' according to Perkins 1904
- 'Monocarpellites hitchcockii belongs to Monocarpellites'
- 'Monocarpellites irregularis belongs to Monocarpellites' according to Perkins 1904
- 'Monocarpellites irregularis belongs to Monocarpellites'
- 'Monocarpellites medius belongs to Monocarpellites' according to Perkins 1904
- 'Monocarpellites medius belongs to Monocarpellites'
- 'Monocarpellites multicostatus belongs to Monocarpellites' according to Perkins 1906
- 'Monocarpellites multicostatus belongs to Monocarpellites'
- 'Monocarpellites orbicularis belongs to Monocarpellites' according to Perkins 1904
- 'Monocarpellites orbicularis belongs to Monocarpellites'
- 'Monocarpellites ovalis belongs to Monocarpellites' according to Perkins 1904
- 'Monocarpellites ovalis belongs to Monocarpellites'
- 'Monocarpellites pruniformis belongs to Monocarpellites'
- 'Monocarpellites pruniformis belongs to Monocarpellites' according to Perkins 1906
- 'Monocarpellites pyramidalis belongs to Monocarpellites' according to Perkins 1904
- 'Monocarpellites pyramidalis belongs to Monocarpellites'
- 'Monocarpellites sulcatus belongs to Monocarpellites' according to Perkins 1904
- 'Monocarpellites sulcatus belongs to Monocarpellites'
- 'Monocarpellites vermontanus belongs to Monocarpellites' according to Perkins 1904
- 'Monocarpellites vermontanus belongs to Monocarpellites'
- 'Monocarpellites whitfieldii belongs to Monocarpellites'
- 'Monocotyledones was reranked as a subclass and belongs to Angiospermae'
- 'Moraceae belongs to Urticales'
- 'Morella belongs to Myricaceae'
- 'Moriconia belongs to Cupressineae'
- 'Moriconia americana belongs to Moriconia'
- 'Moriconia cyclotoxon belongs to Moriconia'
- 'Morus belongs to Moraceae'
- 'Morus affinis belongs to Morus'
- 'Morus affinis belongs to Morus' according to Lesquereux 1871
- 'Morus symmetrica belongs to Morus' according to Cockerell 1908
- 'Morus symmetrica belongs to Morus'
- 'Muhlenbergia belongs to Gramineae'
- 'Muhlenbergia florissanti belongs to Muhlenbergia' according to Knowlton 1916
- 'Muhlenbergia florissanti belongs to Muhlenbergia'
- 'Musci belongs to Bryophyta'
- 'Musophyllum belongs to Monocotyledones'
- 'Musophyllum complicatum belongs to Musophyllum'
- 'Myelophycus belongs to Algae'
- 'Myelophycus curvatum belongs to Myelophycus'
- 'Myrcia belongs to Myrtaceae'
- 'Myrcia bentonensis belongs to Myrcia' according to Berry 1916
- 'Myrcia bentonensis belongs to Myrcia'
- 'Myrcia granadensis belongs to Myrcia' according to Berry 1916
- 'Myrcia granadensis belongs to Myrcia'
- 'Myrcia parvifolia belongs to Myrcia' according to Berry 1916
- 'Myrcia parvifolia belongs to Myrcia'
- 'Myrcia puryearensis belongs to Myrcia' according to Berry 1916
- 'Myrcia puryearensis belongs to Myrcia'
- 'Myrcia vera belongs to Myrcia' according to Berry 1916
- 'Myrcia vera belongs to Myrcia'
- 'Myrica belongs to Myricaceae'
- 'Myrica acuta belongs to Myrica' according to Hollick 1895
- 'Myrica acuta belongs to Myrica'
- 'Myrica alkalina belongs to Myrica' according to Lesquereux 1883
- 'Myrica alkalina is a subjective synonym of Comptonia insignis'
- 'Myrica ambigua is recombined as Celastrinites ambiguus' according to Knowlton 1898
- 'Myrica ambigua is recombined as Celastrinites ambiguus'
- 'Myrica ambigua belongs to Myrica' according to Lesquereux 1871
- 'Myrica aspera belongs to Myrica' according to Lesquereux 1891
- 'Myrica aspera belongs to Myrica'
- 'Myrica banksiaefolia belongs to Myrica' according to Unger 1845
- 'Myrica banksiaefolia belongs to Myrica'
- 'Myrica bolanderi belongs to Myrica' according to Lesquereux 1878
- 'Myrica bolanderi is recombined as Morella bolanderi' according to Cockerell 1906
- 'Myrica bolanderi is recombined as Morella bolanderi'
- 'Myrica brittoniana belongs to Myrica'
- 'Myrica brongniarti belongs to Myrica'
- 'Myrica brongniarti belongs to Myrica' according to Ettingshausen 1878
- 'Myrica brookensis belongs to Myrica' according to Fontaine 1889
- 'Myrica brookensis is a subjective synonym of Celastrophyllum acutidens'
- 'Myrica callicomaefolia belongs to Myrica' according to Lesquereux 1883
- 'Myrica callicomaefolia is a subjective synonym of Myrica drymeja'
- 'Myrica cerifera belongs to Myrica'
- 'Myrica cinnamomifolia belongs to Myrica' according to Newberry 1895
- 'Myrica cinnamomifolia belongs to Myrica'
- 'Myrica cliffwoodensis belongs to Myrica' according to Berry 1904
- 'Myrica cliffwoodensis belongs to Myrica'
- 'Myrica coloradensis belongs to Myrica' according to Knowlton 1916
- 'Myrica coloradensis belongs to Myrica'
- 'Myrica copeana belongs to Myrica' according to Lesquereux 1873
- 'Myrica copeana belongs to Myrica'
- 'Myrica coriacea belongs to Myrica' according to Knowlton 1918
- 'Myrica coriacea belongs to Myrica'
- 'Myrica cretacea belongs to Myrica' according to Lesquereux 1875
- 'Myrica cretacea is replaced by Myrica dakotensis'
- 'Myrica dakotensis belongs to Myrica' according to Lesquereux 1883
- 'Myrica dakotensis belongs to Myrica'
- 'Myrica davisii belongs to Myrica' according to Hollick 1892
- 'Myrica davisii belongs to Myrica'
- 'Myrica diversifolia belongs to Myrica' according to Lesquereux 1883
- 'Myrica diversifolia is recombined as Sorbus diversifolia' according to Cockerell 1910
- 'Myrica diversifolia is recombined as Sorbus diversifolia'
- 'Myrica elaeanoides belongs to Myrica' according to Lesquereux 1888
- 'Myrica elaeanoides belongs to Myrica'
- 'Myrica elegans belongs to Myrica'
- 'Myrica emarginata belongs to Myrica' according to Heer 1882
- 'Myrica emarginata belongs to Myrica'
- 'Myrica fenestrata belongs to Myrica' according to Newberry 1895
- 'Myrica fenestrata belongs to Myrica'
- 'Myrica grandifolia belongs to Myrica' according to Hollick 1892
- 'Myrica grandifolia is replaced by Myrica hollicki'
- 'Myrica havanensis belongs to Myrica' according to Berry 1916
- 'Myrica havanensis belongs to Myrica'
- 'Myrica heerii belongs to Myrica' according to Berry 1903
- 'Myrica heerii is replaced by Myrica brittoniana'
- 'Myrica heerii belongs to Myrica' according to Boulay 1887
- 'Myrica hendersoni belongs to Myrica' according to Cockerell 1906
- 'Myrica hendersoni belongs to Myrica'
- 'Myrica hollicki belongs to Myrica' according to Ward 1893
- 'Myrica hollicki belongs to Myrica'
- 'Myrica idahoensis belongs to Myrica' according to Knowlton 1898
- 'Myrica idahoensis belongs to Myrica'
- 'Myrica insignis belongs to Myrica' according to Lesquereux 1874
- 'Myrica insignis is recombined as Comptonia insignis' according to Cockerell 1906
- 'Myrica insignis is recombined as Comptonia insignis'
- 'Myrica lamarensis belongs to Myrica'
- 'Myrica lanceolata belongs to Myrica' according to Knowlton 1898
- 'Myrica lanceolata belongs to Myrica'
- 'Myrica latiloba belongs to Myrica' according to Heer 1859
- 'Myrica latiloba acutiloba belongs to Myrica latiloba' according to Lesquereux 1873
- 'Myrica latiloba acutiloba is recombined as Comptonia acutiloba' according to Cockerell 1906
- 'Myrica lessigiana belongs to Myrica' according to Lesquereux 1875
- 'Myrica lessigiana is recombined as Artocarpus lessigiana' according to Knowlton 1893
- 'Myrica lessigiana is recombined as Artocarpus lessigiana'
- 'Myrica ludwigii belongs to Myrica' according to Schimper 1872
- 'Myrica ludwigii belongs to Myrica'
- 'Myrica neomexicana belongs to Myrica' according to Knowlton 1916
- 'Myrica neomexicana belongs to Myrica'
- 'Myrica nervosa belongs to Myrica' according to Knowlton 1917
- 'Myrica nervosa belongs to Myrica'
- 'Myrica newberryana belongs to Myrica' according to Hollick 1895
- 'Myrica newberryana belongs to Myrica'
- 'Myrica nigricans belongs to Myrica' according to Lesquereux 1871
- 'Myrica nigricans belongs to Myrica'
- 'Myrica obliqua belongs to Myrica' according to Knowlton 1891
- 'Myrica obliqua belongs to Myrica'
- 'Myrica obscura belongs to Myrica' according to Lesquereux 1883
- 'Myrica obscura belongs to Myrica'
- 'Myrica obtusa belongs to Myrica' according to Lesquereux 1874
- 'Myrica obtusa belongs to Myrica'
- 'Myrica oregoniana belongs to Myrica' according to Knowlton 1902
- 'Myrica oregoniana belongs to Myrica'
- 'Myrica partita belongs to Myrica' according to Lesquereux 1873
- 'Myrica partita is recombined as Comptonia partita' according to Berry 1906
- 'Myrica partita is recombined as Comptonia partita'
- 'Myrica personata belongs to Myrica' according to Knowlton 1902
- 'Myrica personata belongs to Myrica'
- 'Myrica raritanensis belongs to Myrica' according to Hollick 1895
- 'Myrica raritanensis belongs to Myrica'
- 'Myrica ripleyensis belongs to Myrica' according to Berry 1916
- 'Myrica ripleyensis belongs to Myrica'
- 'Myrica salicina belongs to Myrica' according to Unger 1850
- 'Myrica salicina belongs to Myrica'
- 'Myrica saportana belongs to Myrica' according to Lesquereux 1875
- 'Myrica saportana belongs to Myrica'
- 'Myrica schimperi belongs to Myrica' according to Lesquereux 1891
- 'Myrica schimperi belongs to Myrica'
- 'Myrica scottii belongs to Myrica' according to Lesquereux 1883
- 'Myrica scottii belongs to Myrica'
- 'Myrica serrata belongs to Myrica' according to Penhallow 1907
- 'Myrica serrata belongs to Myrica'
- 'Myrica sternbergii belongs to Myrica' according to Lesquereux 1883
- 'Myrica sternbergii belongs to Myrica'
- 'Myrica studeri belongs to Myrica' according to Heer 1856
- 'Myrica studeri belongs to Myrica'
- 'Myrica torreyi belongs to Myrica' according to Lesquereux 1872
- 'Myrica torreyi belongs to Myrica'
- 'Myrica trifoliata belongs to Myrica' according to Newberry 1898
- 'Myrica trifoliata belongs to Myrica'
- 'Myrica ungeri belongs to Myrica'
- 'Myrica ungeri belongs to Myrica' according to Heer 1856
- 'Myrica wardii belongs to Myrica'
- 'Myrica wilcoxensis belongs to Myrica' according to Berry 1916
- 'Myrica wilcoxensis belongs to Myrica'
- 'Myrica zenkeri belongs to Myrica' according to Ettingshausen 1874
- 'Myrica zenkeri belongs to Myrica'
- 'Myricaceae belongs to Myricales'
- 'Myricaephyllum dentatum belongs to Myricaephyllum' according to Fontaine 1889
- 'Myricaephyllum dentatum belongs to Myricaephyllum'
- 'Myricales belongs to Dicotyledones'
- 'Myrsinaceae belongs to Primulales'
- 'Myrsine belongs to Myrsinaceae'
- 'Myrsine borealis belongs to Myrsine' according to Heer 1882
- 'Myrsine borealis belongs to Myrsine'
- 'Myrsine crassa belongs to Myrsine' according to Dietrich 1839
- 'Myrsine crassa belongs to Myrsine' according to Lesquereux 1891
- 'Myrsine crassa is replaced by Myrsine crassula'
- 'Myrsine crassula belongs to Myrsine' according to Knowlton and Cockerell 1919
- 'Myrsine elongata belongs to Myrsine' according to Hollick 1894
- 'Myrsine elongata is a subjective synonym of Myrsine gaudini'
- 'Myrsine laminarum belongs to Myrsine' according to Cockerell 1908
- 'Myrsine laminarum belongs to Myrsine'
- 'Myrsine latifolia belongs to Myrsine' according to Lesquereux 1883
- 'Myrsine latifolia is replaced by Myrsine laminarum'
- 'Myrsine latifolia belongs to Myrsine' according to Springe 1825
- 'Myrsine oblongata belongs to Myrsine' according to Hollick 1895
- 'Myrsine oblongata belongs to Myrsine'
- 'Myrsinites gaudini is recombined as Myrsine gaudini'
- 'Myrtaceae belongs to Myrtales'
- 'Myrtales belongs to Dicotyledones'
- 'Myrtophyllum geinitzi is recombined as Eucalyptus geinitzi'
- 'Myrtophyllum sapindoides belongs to Myrtophyllum' according to Hollick 1912
- 'Myrtophyllum sapindoides belongs to Myrtophyllum'
- 'Myrtophyllum warderi belongs to Myrtophyllum' according to Lesquereux 1891
- 'Myrtophyllum warderi is a subjective synonym of Eucalyptus geinitzi'
- 'Myrtus belongs to Myrtaceae'
- 'Myrtus oregonensis belongs to Myrtus' according to Lesquereux 1883
- 'Myrtus oregonensis belongs to Myrtus'
- 'Nageiopsis belongs to Podocarpeae'
- 'Nageiopsis acuminata belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis acuminata is a subjective synonym of Podozamites acutifolius'
- 'Nageiopsis angustifolia belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis angustifolia belongs to Nageiopsis'
- 'Nageiopsis crassicaulis belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis crassicaulis is a subjective synonym of Nageiopsis longifolia'
- 'Nageiopsis decrescens belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis decrescens is a subjective synonym of Nageiopsis zamioides'
- 'Nageiopsis heterophylla is a subjective synonym of Nageiopsis zamioides'
- 'Nageiopsis heterophylla belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis inaequilateralis belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis inaequilateralis is recombined as Podozamites inaequilateralis' according to Berry 1910
- 'Nageiopsis inaequilateralis is recombined as Podozamites inaequilateralis'
- 'Nageiopsis latifolia belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis latifolia is recombined as Phyllites latifolius' according to Berry 1910
- 'Nageiopsis latifolia is recombined as Phyllites latifolius'
- 'Nageiopsis longifolia belongs to Nageiopsis'
- 'Nageiopsis microphylla belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis microphylla is a subjective synonym of Nageiopsis zamioides'
- 'Nageiopsis montanensis belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis montanensis is a subjective synonym of Podozamites inaequilateralis'
- 'Nageiopsis obtusifolia belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis obtusifolia belongs to Nageiopsis'
- 'Nageiopsis ovata belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis ovata is a subjective synonym of Nageiopsis zamioides'
- 'Nageiopsis recurvata belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis recurvata is a subjective synonym of Nageiopsis zamioides'
- 'Nageiopsis zamioides belongs to Nageiopsis' according to Fontaine 1889
- 'Nageiopsis zamioides belongs to Nageiopsis'
- 'Najadaceae belongs to Najadales'
- 'Najadales belongs to Monocotyledones'
- 'Najadopsis belongs to Najadaceae'
- 'Najadopsis rugulosa belongs to Najadopsis' according to Lesquereux 1883
- 'Najadopsis rugulosa belongs to Najadopsis'
- 'Nectandra belongs to Lauraceae'
- 'Nectandra glenni belongs to Nectandra' according to Berry 1916
- 'Nectandra glenni belongs to Nectandra'
- 'Nectandra imperfecta belongs to Nectandra' according to Hollick 1906
- 'Nectandra imperfecta belongs to Nectandra'
- 'Nectandra lowii belongs to Nectandra' according to Berry 1916
- 'Nectandra lowii belongs to Nectandra'
- 'Nectandra pseudocoriacea belongs to Nectandra' according to Berry 1916
- 'Nectandra pseudocoriacea belongs to Nectandra'
- 'Nectandra puryearensis belongs to Nectandra' according to Berry 1916
- 'Nectandra puryearensis belongs to Nectandra'
- 'Negundo belongs to Aceraceae'
- 'Negundo decurrens belongs to Negundo' according to Lesquereux 1888
- 'Negundo decurrens belongs to Negundo'
- 'Negundo triloba belongs to Negundo' according to Newberry 1868
- 'Negundo triloba belongs to Negundo'
- 'Negundoides is a subjective synonym of Negundo'
- 'Negundoides acutifolia is recombined as Negundo acutifolia' according to Pax 1885
- 'Negundoides acutifolia is recombined as Negundo acutifolia'
- 'Nelumbites belongs to Nymphaeaceae'
- 'Nelumbium is a subjective synonym of Nelumbo'
- 'Nelumbium lakesianum belongs to Nelumbium' according to Lesquereux 1873
- 'Nelumbium lakesianum [misspelled as Nelumbium lakesii] belongs to Nelumbium' according to Lesquereux 1878
- 'Nelumbium lakesianum is recombined as Nelumbo lakesiana' according to Knowlton 1918
- 'Nelumbium lakesianum is recombined as Nelumbo lakesiana'
- 'Nelumbium pygmaeum belongs to Nelumbium' according to Dawson 1890
- 'Nelumbium pygmaeum is recombined as Nelumbo pygmaea'
- 'Nelumbium saskatchuense belongs to Nelumbium' according to Dawson 1887
- 'Nelumbium saskatchuense is recombined as Nelumbo saskatchuense'
- 'Nelumbo belongs to Nymphaeaceae'
- 'Nelumbo dawsoni belongs to Nelumbo' according to Hollick 1894
- 'Nelumbo dawsoni belongs to Nelumbo'
- 'Nelumbo intermedia belongs to Nelumbo' according to Knowlton 1900
- 'Nelumbo intermedia belongs to Nelumbo'
- 'Nelumbo laramiensis belongs to Nelumbo' according to Hollick 1894
- 'Nelumbo laramiensis belongs to Nelumbo'
- 'Nelumbo primaeva belongs to Nelumbo' according to Berry 1903
- 'Nelumbo primaeva is recombined as Nelumbites primaeva' according to Berry 1916
- 'Nelumbo primaeva is recombined as Nelumbites primaeva'
- 'Nelumbo protolutea belongs to Nelumbo' according to Berry 1918
- 'Nelumbo protolutea belongs to Nelumbo'
- 'Neocalamites belongs to Equisetaceae'
- 'Neocalamites knowltoni belongs to Neocalamites' according to Berry 1912
- 'Neocalamites knowltoni belongs to Neocalamites'
- 'Neuropteris acutifolia belongs to Neuropteris' according to Grewingk 1849
- 'Neuropteris acutifolia belongs to Neuropteris'
- 'Neuropteris albertsii is recombined as Cladophlebis albertsii'
- 'Neuropteris angulata belongs to Neuropteris' according to Newberry 1861
- 'Neuropteris angulata is a subjective synonym of Trapa microphylla'
- 'Neuropteris castor belongs to Neuropteris' according to Dawson 1882
- 'Neuropteris civica belongs to Neuropteris' according to Dawson 1896
- 'Neuropteris civica is recombined as Dryopteris civica'
- 'Neuropteris huttoni belongs to Neuropteris' according to Dunker 1846
- 'Neuropteris huttoni is recombined as Cladophlebis huttoni' according to Fontaine 1905
- 'Neuropteris huttoni is recombined as Cladophlebis huttoni'
- 'Neuropteris linnaeaefolia belongs to Neuropteris' according to Bunbury 1847
- 'Neuropteris linnaeaefolia is recombined as Acrostichites linnaeaefolius' according to Fontaine 1883
- 'Neuropteris linnaeaefolia is recombined as Acrostichites linnaeaefolius'
- 'Newberryana belongs to Pteridophyta'
- 'Nilsonia belongs to Cycadaceae'
- 'Nilsonia compta belongs to Nilsonia' according to Phillips 1905
- 'Nilsonia compta belongs to Nilsonia'
- 'Nilsonia johnstrupi belongs to Nilsonia' according to Heer 1882
- 'Nilsonia johnstrupi is a subjective synonym of Nilsonia gibbsii'
- 'Nilsonia lata belongs to Nilsonia' according to Dawson 1882
- 'Nilsonia lata belongs to Nilsonia'
- 'Nilsonia nigracollensis belongs to Nilsonia' according to Wieland 1905
- 'Nilsonia nigracollensis belongs to Nilsonia'
- 'Nilsonia nipponensis belongs to Nilsonia' according to Yokoyama 1889
- 'Nilsonia nipponensis belongs to Nilsonia'
- 'Nilsonia orientalis belongs to Nilsonia' according to Heer 1878
- 'Nilsonia orientalis belongs to Nilsonia'
- 'Nilsonia pasaytensis belongs to Nilsonia' according to Penhallow 1907
- 'Nilsonia pasaytensis belongs to Nilsonia'
- 'Nilsonia polymorpha belongs to Nilsonia' according to Schenk 1867
- 'Nilsonia polymorpha belongs to Nilsonia'
- 'Nilsonia pterophylloides belongs to Nilsonia' according to Nathorst 1878
- 'Nilsonia pterophylloides belongs to Nilsonia'
- 'Nilsonia sambucensis belongs to Nilsonia' according to Ward 1905
- 'Nilsonia sambucensis belongs to Nilsonia'
- 'Nilsonia schaumbergensis belongs to Nilsonia'
- 'Nilsonia schaumbergensis belongs to Nilsonia' according to Dunker 1889
- 'Nilsonia stantoni belongs to Nilsonia' according to Ward 1905
- 'Nilsonia stantoni belongs to Nilsonia'
- 'Nilssonia aequalis belongs to Nilssonia' according to Brongniart 1825
- 'Nilssonia aequalis is recombined as Pterophyllum aequale' according to Nathorst 1878
- 'Nilssonia aequalis is recombined as Pterophyllum aequale'
- 'Nipadites belongs to Arecaceae'
- 'Noeggerathia striata belongs to Noeggerathia' according to Emmons 1857
- 'Noeggerathia striata is a subjective synonym of Baiera multifida'
- 'Noeggerathiopsis belongs to Coniferales'
- 'Noeggerathiopsis robinsi belongs to Noeggerathiopsis' according to Dawson 1893
- 'Noeggerathiopsis robinsi belongs to Noeggerathiopsis'
- 'Nordenskioldia borealis belongs to Nordenskioldia'
- 'Nyctaginaceae belongs to Chenopodiales'
- 'Nymphaeaceae belongs to Ranales'
- 'Nyssa belongs to Cornaceae'
- 'Nyssa acuticostata belongs to Nyssa' according to Perkins 1906
- 'Nyssa acuticostata belongs to Nyssa'
- 'Nyssa aquatica belongs to Nyssa'
- 'Nyssa aquaticaformis belongs to Nyssa' according to Berry 1916
- 'Nyssa aquaticaformis belongs to Nyssa'
- 'Nyssa arctica belongs to Nyssa' according to Heer 1869
- 'Nyssa arctica belongs to Nyssa'
- 'Nyssa ascoidea belongs to Nyssa' according to Perkins 1904
- 'Nyssa ascoidea belongs to Nyssa'
- 'Nyssa biflora belongs to Nyssa'
- 'Nyssa biflora belongs to Nyssa' according to Walter 1788
- 'Nyssa buddiana belongs to Nyssa' according to Ward 1885
- 'Nyssa buddiana belongs to Nyssa'
- 'Nyssa clarkii belongs to Nyssa' according to Perkins 1904
- 'Nyssa clarkii belongs to Nyssa'
- 'Nyssa complanata belongs to Nyssa' according to Lesquereux 1861
- 'Nyssa complanata belongs to Nyssa'
- 'Nyssa crassicostata belongs to Nyssa' according to Perkins 1904
- 'Nyssa crassicostata belongs to Nyssa'
- 'Nyssa curta belongs to Nyssa' according to Perkins 1904
- 'Nyssa curta belongs to Nyssa'
- 'Nyssa cylindrica belongs to Nyssa' according to Perkins 1904
- 'Nyssa cylindrica belongs to Nyssa'
- 'Nyssa denveriana belongs to Nyssa'
- 'Nyssa elongata belongs to Nyssa' according to Perkins 1904
- 'Nyssa elongata belongs to Nyssa'
- 'Nyssa eolignitica belongs to Nyssa' according to Berry 1916
- 'Nyssa eolignitica belongs to Nyssa'
- 'Nyssa equicostata belongs to Nyssa' according to Perkins 1904
- 'Nyssa equicostata belongs to Nyssa'
- 'Nyssa europaea belongs to Nyssa' according to Unger 1845
- 'Nyssa europaea belongs to Nyssa'
- 'Nyssa excavata belongs to Nyssa' according to Perkins 1904
- 'Nyssa excavata belongs to Nyssa'
- 'Nyssa gracilis belongs to Nyssa' according to Berry 1909
- 'Nyssa gracilis belongs to Nyssa'
- 'Nyssa jonesii belongs to Nyssa' according to Perkins 1904
- 'Nyssa jonesii belongs to Nyssa'
- 'Nyssa laevigata belongs to Nyssa'
- 'Nyssa laevigata belongs to Nyssa' according to Lesquereux 1861
- 'Nyssa lamellosa belongs to Nyssa' according to Perkins 1904
- 'Nyssa lamellosa belongs to Nyssa'
- 'Nyssa lanceolata belongs to Nyssa' according to Lesquereux 1872
- 'Nyssa lanceolata belongs to Nyssa'
- 'Nyssa microcarpa belongs to Nyssa' according to Lesquereux 1861
- 'Nyssa microcarpa belongs to Nyssa'
- 'Nyssa multicostata belongs to Nyssa' according to Perkins 1904
- 'Nyssa multicostata belongs to Nyssa'
- 'Nyssa ovalis belongs to Nyssa' according to Perkins 1906
- 'Nyssa ovalis belongs to Nyssa'
- 'Nyssa ovata belongs to Nyssa' according to Perkins 1904
- 'Nyssa ovata belongs to Nyssa'
- 'Nyssa racemosa belongs to Nyssa'
- 'Nyssa racemosa belongs to Nyssa' according to Knowlton 1898
- 'Nyssa snowiana belongs to Nyssa' according to Lesquereux 1891
- 'Nyssa snowiana belongs to Nyssa'
- 'Nyssa solea belongs to Nyssa' according to Perkins 1904
- 'Nyssa solea belongs to Nyssa'
- 'Nyssa sylvatica belongs to Nyssa' according to Marshall 1785
- 'Nyssa sylvatica belongs to Nyssa'
- 'Nyssa uniflora belongs to Nyssa' according to Walter 1788
- 'Nyssa uniflora belongs to Nyssa'
- 'Nyssa vetusta belongs to Nyssa' according to Newberry 1868
- 'Nyssa vetusta belongs to Nyssa'
- 'Nyssa wilcoxiana belongs to Nyssa' according to Berry 1916
- 'Nyssa wilcoxiana belongs to Nyssa'
- 'Nyssidium belongs to Cornaceae'
- 'Ocotea belongs to Lauraceae'
- 'Ocotea nassauensis belongs to Ocotea'
- 'Ocotea nassauensis belongs to Ocotea' according to Hollick 1906
- 'Odontopteris tenuifolius belongs to Odontopteris' according to Emmons 1857
- 'Odontopteris tenuifolius is recombined as Acrostichites tenuifolius'
- 'Odostemon belongs to Berberidaceae'
- 'Odostemon florissantensis belongs to Odostemon' according to Cockerell 1908
- 'Odostemon florissantensis belongs to Odostemon'
- 'Olea americana belongs to Olea' according to Hilgard 1860
- 'Olea americana is a subjective synonym of Osmanthus pedatus'
- 'Olea praemissa belongs to Olea' according to Lesquereux 1883
- 'Olea praemissa is recombined as Osmanthus praemissa' according to Cockerell 1906
- 'Olea praemissa is recombined as Osmanthus praemissa'
- 'Oleaceae belongs to Oleales'
- 'Oleales belongs to Dicotyledones'
- 'Oleandra belongs to Polypodiaceae'
- 'Oleandra arctica belongs to Oleandra' according to Heer 1874
- 'Oleandra arctica belongs to Oleandra'
- 'Oleandra graminaefolia belongs to Oleandra' according to Knowlton 1907
- 'Oleandra graminaefolia belongs to Oleandra'
- 'Onoclea belongs to Polypodiaceae'
- 'Onoclea minima belongs to Onoclea'
- 'Onoclea neomexicana belongs to Onoclea' according to Knowlton 1916
- 'Onoclea neomexicana belongs to Onoclea'
- 'Onoclea reducta belongs to Onoclea' according to Cockerell 1908
- 'Onoclea reducta is a subjective synonym of Sorbus diversifolia'
- 'Onoclea sensibilis belongs to Onoclea'
- 'Onychiopsis belongs to Polypodiaceae'
- 'Onychiopsis goepperti belongs to Onychiopsis' according to Schenk 1871
- 'Onychiopsis goepperti belongs to Onychiopsis'
- 'Opegrapha belongs to Graphidiaceae'
- 'Opegrapha antiqua belongs to Opegrapha' according to Lesquereux 1872
- 'Opegrapha antiqua belongs to Opegrapha'
- 'Ophioglossaceae belongs to Ophioglossales'
- 'Ophioglossales belongs to Pteridophyta'
- 'Ophioglossum belongs to Ophioglossaceae'
- 'Ophioglossum alleni belongs to Ophioglossum' according to Lesquereux 1872
- 'Ophioglossum alleni is recombined as Tmesipteris alleni' according to Hollick 1894
- 'Ophioglossum alleni is recombined as Tmesipteris alleni'
- 'Ophioglossum granulatum is recombined as Pinus granulatum' according to Stopes 1911
- 'Ophioglossum granulatum is recombined as Pinus granulatum'
- 'Oreodaphne belongs to Lauraceae'
- 'Oreodaphne alabamensis belongs to Oreodaphne' according to Berry 1912
- 'Oreodaphne alabamensis belongs to Oreodaphne'
- 'Oreodaphne coushatta belongs to Oreodaphne' according to Berry 1916
- 'Oreodaphne coushatta belongs to Oreodaphne'
- 'Oreodaphne cretacea belongs to Oreodaphne' according to Lesquereux 1874
- 'Oreodaphne cretacea belongs to Oreodaphne'
- 'Oreodaphne lithaeformis belongs to Oreodaphne' according to Lesquereux 1888
- 'Oreodaphne lithaeformis is corrected as Oreodaphne litsaeformis and belongs to Oreodaphne'
- 'Oreodaphne mississippiensis belongs to Oreodaphne' according to Berry 1916
- 'Oreodaphne mississippiensis belongs to Oreodaphne'
- 'Oreodaphne obtusifolia belongs to Oreodaphne' according to Berry 1916
- 'Oreodaphne obtusifolia belongs to Oreodaphne'
- 'Oreodaphne pseudoguianensis belongs to Oreodaphne' according to Berry 1916
- 'Oreodaphne pseudoguianensis belongs to Oreodaphne'
- 'Oreodaphne puryearensis belongs to Oreodaphne' according to Berry 1916
- 'Oreodaphne puryearensis belongs to Oreodaphne'
- 'Oreodaphne ratonensis belongs to Oreodaphne' according to Knowlton 1918
- 'Oreodaphne ratonensis belongs to Oreodaphne'
- 'Oreodaphne salinensis belongs to Oreodaphne' according to Berry 1916
- 'Oreodaphne salinensis belongs to Oreodaphne'
- 'Oreodaphne shirleyensis belongs to Oreodaphne' according to Berry 1919
- 'Oreodaphne shirleyensis belongs to Oreodaphne'
- 'Oreodaphne wilcoxensis belongs to Oreodaphne' according to Berry 1916
- 'Oreodaphne wilcoxensis belongs to Oreodaphne'
- 'Oreodoxites belongs to Arecaceae'
- 'Oreodoxites is an objective synonym of Oreodoxites'
- 'Oreodoxites plicatus belongs to Oreodoxites'
- 'Oreopanax belongs to Araliaceae'
- 'Oreopanax minor belongs to Oreopanax' according to Berry 1916
- 'Oreopanax minor belongs to Oreopanax'
- 'Oreopanax oxfordensis belongs to Oreopanax' according to Berry 1916
- 'Oreopanax oxfordensis belongs to Oreopanax'
- 'Oryzopsis belongs to Gramineae'
- 'Oryzopsis asperifolia belongs to Oryzopsis'
- 'Oryzopsis asperifolia belongs to Oryzopsis' according to Michaux 1803
- 'Osmanthus belongs to Pirolaceae'
- 'Osmunda belongs to Osmundaceae'
- 'Osmunda arctica belongs to Osmunda' according to Heer 1883
- 'Osmunda arctica belongs to Osmunda'
- 'Osmunda delawarensis belongs to Osmunda' according to Berry 1906
- 'Osmunda delawarensis belongs to Osmunda'
- 'Osmunda dicksonioides belongs to Osmunda' according to Fontaine 1889
- 'Osmunda dicksonioides belongs to Osmunda'
- 'Osmunda doroschkiana belongs to Osmunda'
- 'Osmunda doroschkiana belongs to Osmunda' according to Göppert 1861
- 'Osmunda heerii belongs to Osmunda' according to Gaudin 1908
- 'Osmunda heerii belongs to Osmunda'
- 'Osmunda hollicki belongs to Osmunda' according to Knowlton 1918
- 'Osmunda hollicki belongs to Osmunda'
- 'Osmunda macrophylla belongs to Osmunda'
- 'Osmunda major belongs to Osmunda' according to Lesquereux 1883
- 'Osmunda major is a subjective synonym of Allantodiopsis erosa'
- 'Osmunda montanensis belongs to Osmunda' according to Knowlton 1905
- 'Osmunda montanensis belongs to Osmunda'
- 'Osmunda novaecaesarae belongs to Osmunda' according to Berry 1907
- 'Osmunda novaecaesarae belongs to Osmunda'
- 'Osmunda obergiana belongs to Osmunda' according to Heer 1895
- 'Osmunda obergiana belongs to Osmunda'
- 'Osmunda spectabilis belongs to Osmunda' according to Willdenow 1910
- 'Osmunda spectabilis belongs to Osmunda'
- 'Osmunda sphenopteroides belongs to Osmunda' according to Fontaine 1889
- 'Osmunda sphenopteroides belongs to Osmunda'
- 'Osmunda torelli belongs to Osmunda' according to Heer 1878
- 'Osmunda torelli is a subjective synonym of Osmunda doroschkiana'
- 'Osmundaceae belongs to Filicales'
- 'Osmundites belongs to Osmundaceae'
- 'Osmundites skidegatensis belongs to Osmundites' according to Penhallow 1902
- 'Osmundites skidegatensis belongs to Osmundites'
- 'Ostrya belongs to Betulaceae'
- 'Ostrya betuloides belongs to Ostrya' according to Lesquereux 1883
- 'Ostrya betuloides is a subjective synonym of Fraxinus libbeyi'
- 'Ostrya walkeri belongs to Ostrya' according to Heer 1887
- 'Ostrya walkeri belongs to Ostrya'
- 'Otozamites belongs to Cycadaceae'
- 'Otozamites bornholmensis belongs to Otozamites' according to Möller 1902
- 'Otozamites bornholmensis belongs to Otozamites'
- 'Otozamites carolinensis belongs to Otozamites' according to Fontaine 1883
- 'Otozamites carolinensis belongs to Otozamites'
- 'Otozamites giganteus belongs to Otozamites' according to Thomas 1911
- 'Otozamites giganteus belongs to Otozamites'
- 'Otozamites latior belongs to Otozamites' according to Saporta 1873
- 'Otozamites latior belongs to Otozamites'
- 'Otozamites macombii belongs to Otozamites' according to Newberry 1859
- 'Otozamites macombii belongs to Otozamites'
- 'Otozamites oregonensis belongs to Otozamites' according to Fontaine 1905
- 'Otozamites oregonensis belongs to Otozamites'
- 'Otozamites pterophylloides belongs to Otozamites' according to Brongniart 1870
- 'Otozamites pterophylloides belongs to Otozamites'
- 'Ottelia belongs to Hydrocharitaceae'
- 'Ottelia americana belongs to Ottelia' according to Lesquereux 1874
- 'Ottelia americana belongs to Ottelia'
- 'Ovularites belongs to Moniliaceae'
- 'Ovularites barbouri belongs to Ovularites'
- 'Oxycoccus belongs to Vacciniaceae'
- 'Oxycoccus palustris belongs to Oxycoccus' according to Persoon 1805
- 'Oxycoccus palustris belongs to Oxycoccus'
- 'Oxypolis belongs to Umbelliferae'
- 'Oxypolis destructus belongs to Oxypolis' according to Cockerell 1908
- 'Oxypolis destructus belongs to Oxypolis'
- 'Pachyphyllum brevifolium belongs to Pachyphyllum' according to Newberry 1888
- 'Pachyphyllum brevifolium is recombined as Pagiophyllum brevifolium' according to Ward 1900
- 'Pachyphyllum brevifolium is recombined as Pagiophyllum brevifolium'
- 'Pachyphyllum simile belongs to Pachyphyllum' according to Newberry 1888
- 'Pachyphyllum simile is recombined as Pagiophyllum simile' according to Ward 1900
- 'Pachyphyllum simile is recombined as Pagiophyllum simile'
- 'Pachystima belongs to Celastraceae'
- 'Pachystima cretacea belongs to Pachystima'
- 'Pachystima integra belongs to Pachystima' according to Cockerell 1908
- 'Pachystima integra belongs to Pachystima'
- 'Padus belongs to Drupaceae'
- 'Padus demissa belongs to Padus' according to Nuttall 1911
- 'Padus demissa belongs to Padus'
- 'Pagiophyllum belongs to Coniferales'
- 'Pagiophyllum dubium belongs to Pagiophyllum'
- 'Pagiophyllum dubium belongs to Pagiophyllum' according to Fontaine 1893
- 'Pagiophyllum falcatum belongs to Pagiophyllum' according to Bartolin 1916
- 'Pagiophyllum falcatum belongs to Pagiophyllum'
- 'Pagiophyllum kurrii belongs to Pagiophyllum' according to Pomel 1872
- 'Pagiophyllum kurrii belongs to Pagiophyllum'
- 'Pagiophyllum newberryi belongs to Pagiophyllum' according to Ward 1900
- 'Pagiophyllum newberryi belongs to Pagiophyllum'
- 'Pagiophyllum steenstrupi belongs to Pagiophyllum' according to Bartolin 1914
- 'Pagiophyllum steenstrupi belongs to Pagiophyllum'
- 'Palaeanthus belongs to Dicotyledones'
- 'Palaeanthus problematicus belongs to Palaeanthus'
- 'Palaeanthus problematicus is recombined as Williamsonia problematica' according to Ward 1895
- 'Palaeoaster inquirenda belongs to Palaeoaster'
- 'Palaeocassia belongs to Caesalpiniaceae'
- 'Palaeocassia laurinea belongs to Palaeocassia' according to Lesquereux 1891
- 'Palaeocassia laurinea belongs to Palaeocassia'
- 'Palaeodendron belongs to Proteaceae'
- 'Palaeodendron americanum belongs to Palaeodendron' according to Berry 1916
- 'Palaeodendron americanum belongs to Palaeodendron'
- 'Palaeodictyon belongs to Algae'
- 'Palaeodictyon singulare belongs to Palaeodictyon'
- 'Palaeophycus belongs to Algae'
- 'Palaeophycus limaciformis belongs to Palaeophycus' according to Lewis 1880
- 'Palaeophycus limaciformis belongs to Palaeophycus'
- 'Palaeopotamogeton belongs to Potamogetonaceae'
- 'Palaeopotamogeton florissanti belongs to Palaeopotamogeton'
- 'Palaeozamia megaphylla belongs to Palaeozamia' according to Phillips 1871
- 'Palaeozamia megaphylla is recombined as Zamites megaphyllus' according to Seward 1904
- 'Paleohillia arkansana belongs to Paleohillia'
- 'Palissya belongs to Podocarpeae'
- 'Palissya carolinensis belongs to Palissya' according to Fontaine 1883
- 'Palissya carolinensis is recombined as Abietites carolinensis'
- 'Palissya longifolia belongs to Palissya' according to Wherry 1916
- 'Palissya longifolia belongs to Palissya'
- 'Palissya williamsonis belongs to Palissya' according to Brongniart 1849
- 'Palissya williamsonis is recombined as Pagiophyllum williamsoni' according to Fontaine 1896
- 'Palissya williamsonis is recombined as Pagiophyllum williamsonis' according to Fontaine 1900
- 'Palissya williamsonis is recombined as Pagiophyllum williamsonis'
- 'Paliurus belongs to Rhamnaceae'
- 'Paliurus affinis belongs to Paliurus' according to Heer 1892
- 'Paliurus affinis belongs to Paliurus'
- 'Paliurus anceps belongs to Paliurus' according to Lesquereux 1891
- 'Paliurus anceps belongs to Paliurus'
- 'Paliurus angustus belongs to Paliurus' according to Berry 1916
- 'Paliurus angustus belongs to Paliurus'
- 'Paliurus colombi belongs to Paliurus'
- 'Paliurus coloradensis belongs to Paliurus' according to Lesquereux 1888
- 'Paliurus coloradensis belongs to Paliurus'
- 'Paliurus cretaceus belongs to Paliurus' according to Lesquereux 1891
- 'Paliurus cretaceus belongs to Paliurus'
- 'Paliurus florissanti belongs to Paliurus' according to Lesquereux 1873
- 'Paliurus florissanti belongs to Paliurus'
- 'Paliurus haydeni belongs to Paliurus' according to Cockerell 1908
- 'Paliurus haydeni belongs to Paliurus'
- 'Paliurus integrifolius belongs to Paliurus' according to Hollick 1894
- 'Paliurus integrifolius belongs to Paliurus'
- 'Paliurus membranaceus belongs to Paliurus' according to Lesquereux 1868
- 'Paliurus membranaceus is recombined as Cinnamomum membranaceum' according to Hollick 1906
- 'Paliurus membranaceus is recombined as Cinnamomum membranaceum'
- 'Paliurus minimus belongs to Paliurus'
- 'Paliurus mississippiensis belongs to Paliurus' according to Berry 1916
- 'Paliurus mississippiensis belongs to Paliurus'
- 'Paliurus montanus belongs to Paliurus' according to Dawson 1885
- 'Paliurus montanus belongs to Paliurus'
- 'Paliurus neillii belongs to Paliurus' according to Dawson 1893
- 'Paliurus neillii belongs to Paliurus'
- 'Paliurus obovatus belongs to Paliurus' according to Lesquereux 1891
- 'Paliurus obovatus belongs to Paliurus'
- 'Paliurus ovalis belongs to Paliurus' according to Newberry 1896
- 'Paliurus ovalis is replaced by Smilax raritanensis'
- 'Paliurus ovalis belongs to Paliurus' according to Dawson 1885
- 'Paliurus ovalis belongs to Paliurus'
- 'Paliurus pealei belongs to Paliurus' according to Ward 1885
- 'Paliurus pealei belongs to Paliurus'
- 'Paliurus pinsonensis belongs to Paliurus' according to Berry 1916
- 'Paliurus pinsonensis belongs to Paliurus'
- 'Paliurus populiferus belongs to Paliurus' according to Berry 1906
- 'Paliurus populiferus belongs to Paliurus'
- 'Paliurus pulcherrimus belongs to Paliurus' according to Ward 1885
- 'Paliurus pulcherrimus belongs to Paliurus'
- 'Paliurus upatoiensis belongs to Paliurus'
- 'Paliurus zizyphoides belongs to Paliurus' according to Lesquereux 1872
- 'Paliurus zizyphoides belongs to Paliurus'
- 'Palmacites goldianus is recombined as Geonomites goldianus'
- 'Palmacites goldianus belongs to Palmacites' according to Lesquereux 1874
- 'Palmacites goldianus is recombined as Geonomites goldianus' according to Lesquereux 1878
- 'Palmocarpon belongs to Arecaceae'
- 'Palmocarpon commune belongs to Palmocarpon' according to Lesquereux 1878
- 'Palmocarpon commune is a subjective synonym of Palmocarpon palmarum'
- 'Palmocarpon corrugatum is recombined as Carpolithes corrugatus' according to Cockerell 1909
- 'Palmocarpon corrugatum is recombined as Carpolithes corrugatus'
- 'Palmocarpon corrugatum belongs to Palmocarpon' according to Lesquereux 1878
- 'Palmocarpon globosum belongs to Palmocarpon' according to Lesquereux 1883
- 'Palmocarpon globosum belongs to Palmocarpon'
- 'Palmocarpon lineatum belongs to Palmocarpon' according to Lesquereux 1888
- 'Palmocarpon lineatum belongs to Palmocarpon'
- 'Palmocarpon subcylindricum belongs to Palmocarpon' according to Lesquereux 1878
- 'Palmocarpon subcylindricum belongs to Palmocarpon'
- 'Palmocarpon truncatum belongs to Palmocarpon' according to Lesquereux 1878
- 'Palmocarpon truncatum belongs to Palmocarpon'
- 'Palmoxylon belongs to Arecaceae'
- 'Palmoxylon anchorus belongs to Palmoxylon' according to Stevens 1912
- 'Palmoxylon anchorus belongs to Palmoxylon'
- 'Palmoxylon cellulosum belongs to Palmoxylon'
- 'Palmoxylon cliffwoodensis belongs to Palmoxylon' according to Berry 1916
- 'Palmoxylon cliffwoodensis belongs to Palmoxylon'
- 'Palmoxylon quenstedti belongs to Palmoxylon'
- 'Panax belongs to Araliaceae'
- 'Panax andrewsii belongs to Panax' according to Cockerell 1908
- 'Panax andrewsii belongs to Panax'
- 'Panax cretacea belongs to Panax' according to Heer 1906
- 'Panax cretacea belongs to Panax'
- 'Pandanales belongs to Monocotyledones'
- 'Papaverales belongs to Dicotyledones'
- 'Papilionaceae belongs to Rosales'
- 'Paracedroxylon belongs to Abietineae'
- 'Paracedroxylon scituatense belongs to Paracedroxylon'
- 'Paracupressinoxylon belongs to Cupressineae'
- 'Paracupressinoxylon cupressoides belongs to Paracupressinoxylon'
- 'Paracupressinoxylon potomacense belongs to Paracupressinoxylon' according to Sinnott and Bartlett 1916
- 'Paracupressinoxylon potomacense belongs to Paracupressinoxylon'
- 'Parietales belongs to Dicotyledones'
- 'Parrotia belongs to Hamamelidaceae'
- 'Parrotia canfieldi belongs to Parrotia' according to Lesquereux 1891
- 'Parrotia canfieldi belongs to Parrotia'
- 'Parrotia grandidentata belongs to Parrotia' according to Lesquereux 1891
- 'Parrotia grandidentata belongs to Parrotia'
- 'Parrotia winchelli belongs to Parrotia' according to Lesquereux 1891
- 'Parrotia winchelli belongs to Parrotia'
- 'Parthenocissus belongs to Vitaceae'
- 'Parthenocissus osborni belongs to Parthenocissus' according to Cockerell 1908
- 'Parthenocissus osborni belongs to Parthenocissus'
- 'Pasania belongs to Fagaceae'
- 'Passiflora belongs to Passifloraceae'
- 'Passiflora antiqua belongs to Passiflora' according to Newberry 1895
- 'Passiflora antiqua belongs to Passiflora'
- 'Passifloraceae belongs to Parietales'
- 'Pecopteris belongs to Pteridophyta'
- 'Pecopteris (Alethopteris) indica belongs to Pecopteris (Alethopteris)' according to Oldham and Morris 1862
- 'Pecopteris (Alethopteris) indica is recombined as Cladophlebis indica' according to Fontaine 1896
- 'Pecopteris (Alethopteris) indica is recombined as Cladophlebis indica'
- 'Pecopteris angustipennis belongs to Pecopteris' according to Fontaine 1889
- 'Pecopteris angustipennis is a subjective synonym of Cladophlebis browniana'
- 'Pecopteris arctica belongs to Pecopteris' according to Heer 1883
- 'Pecopteris borealis belongs to Pecopteris' according to Brongniart 1828
- 'Pecopteris brevipennis belongs to Pecopteris' according to Fontaine 1889
- 'Pecopteris brevipennis is a subjective synonym of Cladophlebis ungeri'
- 'Pecopteris browniana belongs to Pecopteris' according to Dunker 1846
- 'Pecopteris browniana is recombined as Cladophlebis browniana' according to Seward 1894
- 'Pecopteris bullata is recombined as Mertensides bullatus'
- 'Pecopteris carolinensis is a subjective synonym of Asterocarpus falcatus'
- 'Pecopteris carolinensis is recombined as Laccopteris carolinensis' according to Fontaine 1883
- 'Pecopteris constricta belongs to Pecopteris' according to Fontaine 1889
- 'Pecopteris constricta is a subjective synonym of Cladophlebis browniana'
- 'Pecopteris cycloloba belongs to Pecopteris' according to Newberry 1861
- 'Pecopteris denticulata belongs to Pecopteris' according to Brongniart 1828
- 'Pecopteris denticulata is recombined as Cladophlebis denticulata' according to Nathorst 1876
- 'Pecopteris denticulata is recombined as Cladophlebis denticulata' according to Fontaine 1889
- 'Pecopteris denticulata is recombined as Cladophlebis denticulata'
- 'Pecopteris dunkeri belongs to Pecopteris' according to Schimper 1850
- 'Pecopteris dunkeri is recombined as Aspidium dunkeri' according to Fontaine 1889
- 'Pecopteris dunkeri is recombined as Cladophlebis dunkeri' according to Knowlton 1898
- 'Cladophlebis dunkeri is a subjective synonym of Cladophlebis ungeri'
- 'Pecopteris falcatus is recombined as Asterocarpus falcatus' according to Fontaine 1900
- 'Pecopteris falcatus is recombined as Asterocarpus falcatus'
- 'Pecopteris geyleriana belongs to Pecopteris' according to Nathorst 1890
- 'Pecopteris haiburnensis belongs to Pecopteris' according to Lindley and Hutton 1836
- 'Pecopteris haiburnensis is recombined as Cladophlebis haiburnensis' according to Brongniart 1849
- 'Pecopteris microdonta belongs to Pecopteris' according to Fontaine 1889
- 'Pecopteris microdonta is a subjective synonym of Cladophlebis browniana'
- 'Pecopteris montanensis belongs to Pecopteris' according to Fontaine 1892
- 'Pecopteris murrayana is recombined as Thyrsopteris murrayana' according to Heer 1876
- 'Pecopteris murrayana is recombined as Thyrsopteris murrayana'
- 'Pecopteris nebraskana belongs to Pecopteris' according to Heer 1868
- 'Pecopteris nebraskana is recombined as Cyatheites nebraskana' according to Knowlton 1898
- 'Pecopteris nebraskana is recombined as Cyatheites nebraskana'
- 'Pecopteris ovodentata belongs to Pecopteris' according to Fontaine 1889
- 'Pecopteris ovodentata is a subjective synonym of Cladophlebis browniana'
- 'Pecopteris pachyphylla belongs to Pecopteris' according to Fontaine 1889
- 'Pecopteris pachyphylla is a subjective synonym of Cladophlebis ungeri'
- 'Pecopteris paucifolia belongs to Pecopteris' according to Phillips 1829
- 'Pecopteris paucifolia is recombined as Sagenopteris paucifolia' according to Ward 1905
- 'Pecopteris paucifolia is recombined as Sagenopteris paucifolia'
- 'Pecopteris rarinervis belongs to Pecopteris' according to Fontaine 1883
- 'Pecopteris rarinervis belongs to Pecopteris'
- 'Pecopteris reticulata belongs to Pecopteris' according to Stokes and Webb 1824
- 'Pecopteris reticulata is recombined as Weichselia reticulata' according to Ward 1899
- 'Pecopteris reticulata is recombined as Weichselia reticulata'
- 'Pecopteris sepulta belongs to Pecopteris' according to Newberry 1882
- 'Pecopteris socialis belongs to Pecopteris' according to Heer 1882
- 'Pecopteris socialis is recombined as Cladophlebis socialis' according to Berry 1911
- 'Pecopteris socialis is recombined as Cladophlebis socialis'
- 'Pecopteris strictinervis belongs to Pecopteris' according to Fontaine 1889
- 'Pecopteris strictinervis is a subjective synonym of Cladophlebis browniana'
- 'Pecopteris undulata belongs to Pecopteris' according to Hall 1842
- 'Pecopteris undulata is recombined as Tapeinidium undulatum' according to Knowlton 1917
- 'Pecopteris undulata is recombined as Tapeinidium undulatum'
- 'Pecopteris ungeri is recombined as Cladophlebis ungeri' according to Ward 1905
- 'Pecopteris ungeri is recombined as Cladophlebis ungeri'
- 'Pecopteris ungeri belongs to Pecopteris' according to Dunker 1846
- 'Pecopteris virginiensis belongs to Pecopteris' according to Fontaine 1889
- 'Pecopteris virginiensis is a subjective synonym of Cladophlebis browniana'
- 'Pecopteris zippei is recombined as Gleichenia zippei' according to Heer 1868
- 'Pecopteris zippei is recombined as Gleichenia zippei'
- 'Pecopteris zippei belongs to Pecopteris' according to Corda 1846
- 'Pellaea belongs to Polypodiaceae'
- 'Pellaea antiquella belongs to Pellaea' according to Cockerell 1908
- 'Pellaea antiquella belongs to Pellaea'
- 'Periploca belongs to Asclepiadaceae'
- 'Periploca cretacea belongs to Periploca' according to Hollick 1906
- 'Periploca cretacea belongs to Periploca'
- 'Peronosporaceae belongs to Vaucheriales'
- 'Peronosporoides belongs to Peronosporaceae'
- 'Peronosporoides palmi belongs to Peronosporoides'
- 'Persea belongs to Lauraceae'
- 'Persea borbonia belongs to Persea' according to Linnaeus 1825
- 'Persea borbonia belongs to Persea'
- 'Persea coloradica belongs to Persea' according to Cockerell 1908
- 'Persea coloradica belongs to Persea'
- 'Persea dilleri belongs to Persea' according to Lesquereux 1888
- 'Persea dilleri belongs to Persea'
- 'Persea hayana belongs to Persea'
- 'Persea hayana belongs to Persea' according to Lesquereux 1891
- 'Persea lancifolia belongs to Persea' according to Lesquereux 1869
- 'Persea lancifolia is recombined as Nectandra lancifolia' according to Berry 1916
- 'Persea lancifolia is recombined as Nectandra lancifolia'
- 'Persea nebrascensis belongs to Persea' according to Lesquereux 1869
- 'Persea nebrascensis is recombined as Laurus nebrascensis'
- 'Persea pseudocarolinensis belongs to Persea'
- 'Persea pubescens belongs to Persea' according to Pursh 1907
- 'Persea pubescens belongs to Persea'
- 'Persea punctulata belongs to Persea' according to Lesquereux 1888
- 'Persea punctulata belongs to Persea'
- 'Persea schimperi belongs to Persea' according to Lesquereux 1891
- 'Persea schimperi belongs to Persea'
- 'Persea speciosa belongs to Persea'
- 'Persea speciosa belongs to Persea' according to Heer 1888
- 'Persea valida belongs to Persea' according to Hollick 1906
- 'Persea valida belongs to Persea'
- 'Persea wilcoxiana belongs to Persea' according to Berry 1916
- 'Persea wilcoxiana belongs to Persea'
- 'Perseoxylon belongs to Lauraceae'
- 'Perseoxylon californicum belongs to Perseoxylon' according to Platen 1907
- 'Perseoxylon californicum belongs to Perseoxylon'
- 'Perseoxylon eberi belongs to Perseoxylon' according to Platen 1907
- 'Perseoxylon eberi belongs to Perseoxylon'
- 'Persicaria belongs to Polygonaceae'
- 'Persoonia belongs to Proteaceae'
- 'Persoonia lesquereuxii belongs to Persoonia' according to Knowlton 1891
- 'Persoonia lesquereuxii belongs to Persoonia'
- 'Persoonia oviformis belongs to Persoonia' according to Lesquereux 1859
- 'Persoonia oviformis belongs to Persoonia'
- 'Persoonia spatulata belongs to Persoonia' according to Hollick 1895
- 'Persoonia spatulata belongs to Persoonia'
- 'Pestalozzites minor belongs to Pestalozzites' according to Berry 1918
- 'Pestalozzites minor belongs to Pestalozzites'
- 'Peuce pannonica belongs to Peuce' according to Unger 1845
- 'Peuce pannonica is recombined as Pinites pannonicus' according to Göppert 1861
- 'Peuce pannonica is recombined as Pinites pannonicus'
- 'Phaca belongs to Leguminosae'
- 'Phaca wilmattae belongs to Phaca' according to Cockerell 1908
- 'Phaca wilmattae belongs to Phaca'
- 'Phalaris belongs to Gramineae'
- 'Phalaris geometrorum belongs to Phalaris'
- 'Phalaris geometrorum belongs to Phalaris' according to Cockerell 1913
- 'Phaseolites belongs to Papilionaceae'
- 'Phaseolites crassus belongs to Phaseolites' according to Knowlton 1918
- 'Phaseolites crassus belongs to Phaseolites'
- 'Phaseolites elegans belongs to Phaseolites' according to Hollick 1906
- 'Phaseolites elegans belongs to Phaseolites'
- 'Phaseolites formus belongs to Phaseolites' according to Lesquereux 1891
- 'Phaseolites formus belongs to Phaseolites'
- 'Phaseolites leei belongs to Phaseolites' according to Knowlton 1918
- 'Phaseolites leei belongs to Phaseolites'
- 'Phaseolites manhassettensis belongs to Phaseolites' according to Hollick 1904
- 'Phaseolites manhassettensis belongs to Phaseolites'
- 'Phaseolites minutus belongs to Phaseolites' according to Knowlton 1918
- 'Phaseolites minutus belongs to Phaseolites'
- 'Phegopteris belongs to Polypodiaceae'
- 'Phegopteris grothiana belongs to Phegopteris' according to Heer 1883
- 'Phegopteris grothiana belongs to Phegopteris'
- 'Phenanthera petalifera belongs to Phenanthera'
- 'Philadelphus belongs to Saxifragaceae'
- 'Philadelphus palaeophilus belongs to Philadelphus' according to Cockerell 1908
- 'Philadelphus palaeophilus belongs to Philadelphus'
- 'Philotria belongs to Vallisneriaceae'
- 'Phlebopteris nilssoni belongs to Phlebopteris' according to Brongniart 1836
- 'Phlebopteris nilssoni is recombined as Dictyophyllum nilssoni' according to Göppert 1846
- 'Phlebopteris nilssoni is recombined as Dictyophyllum nilssoni'
- 'Phoenicites belongs to Arecaceae'
- 'Phoenicites occidentalis belongs to Phoenicites' according to Berry 1914
- 'Phoenicites occidentalis belongs to Phoenicites'
- 'Phoenicopsis belongs to Coniferales'
- 'Phoenicopsis angustifolia belongs to Phoenicopsis'
- 'Phoenicopsis speciosa belongs to Phoenicopsis' according to Heer 1876
- 'Phoenicopsis speciosa belongs to Phoenicopsis'
- 'Phoradendron belongs to Loranthaceae'
- 'Phoradendron flavescens belongs to Phoradendron' according to Nuttall 1848
- 'Phoradendron flavescens belongs to Phoradendron'
- 'Phragmites belongs to Gramineae'
- 'Phragmites alaskana belongs to Phragmites' according to Heer 1869
- 'Phragmites alaskana belongs to Phragmites'
- 'Phragmites cliffwoodensis belongs to Phragmites' according to Berry 1903
- 'Phragmites cliffwoodensis belongs to Phragmites'
- 'Phragmites cordaiformis belongs to Phragmites' according to Dawson 1882
- 'Phragmites cordaiformis belongs to Phragmites'
- 'Phragmites falcata belongs to Phragmites'
- 'Phragmites laramianus belongs to Phragmites' according to Cockerell 1909
- 'Phragmites laramianus belongs to Phragmites'
- 'Phragmites latissima belongs to Phragmites'
- 'Phragmites prattii belongs to Phragmites'
- 'Phycomycetes belongs to Fungi'
- 'Phyllites belongs to Dicotyledones'
- 'Phyllites aceroides belongs to Phyllites' according to Heer 1868
- 'Phyllites aceroides belongs to Phyllites'
- 'Phyllites amissus belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites amissus belongs to Phyllites'
- 'Phyllites amorphus belongs to Phyllites' according to Lesquereux 1868
- 'Phyllites amorphus belongs to Phyllites'
- 'Phyllites arctica belongs to Phyllites' according to Knowlton 1894
- 'Phyllites arctica belongs to Phyllites'
- 'Phyllites aristolochiaeformis belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites aristolochiaeformis belongs to Phyllites'
- 'Phyllites asplenioides belongs to Phyllites' according to Berry 1919
- 'Phyllites asplenioides belongs to Phyllites'
- 'Phyllites aurantiacus belongs to Phyllites' according to Knowlton 1918
- 'Phyllites aurantiacus belongs to Phyllites'
- 'Phyllites betulaefolius belongs to Phyllites' according to Lesquereux 1869
- 'Phyllites betulaefolius belongs to Phyllites'
- 'Phyllites bifurcies belongs to Phyllites' according to Knowlton 1902
- 'Phyllites bifurcies belongs to Phyllites'
- 'Phyllites carneosus belongs to Phyllites' according to Newberry 1868
- 'Phyllites carneosus belongs to Phyllites'
- 'Phyllites castalioides belongs to Phyllites' according to Knowlton 1918
- 'Phyllites castalioides belongs to Phyllites'
- 'Phyllites celatus belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites celatus belongs to Phyllites'
- 'Phyllites cercocarpifolia belongs to Phyllites' according to Berry 1916
- 'Phyllites cercocarpifolia belongs to Phyllites'
- 'Phyllites cliffwoodensis belongs to Phyllites' according to Berry 1905
- 'Phyllites cliffwoodensis belongs to Phyllites'
- 'Phyllites cockerelli belongs to Phyllites' according to Knowlton 1916
- 'Phyllites cockerelli belongs to Phyllites'
- 'Phyllites coriaceus belongs to Phyllites' according to Newberry 1861
- 'Phyllites coriaceus belongs to Phyllites'
- 'Phyllites crassifolia belongs to Phyllites'
- 'Phyllites cupanioides belongs to Phyllites' according to Newberry 1868
- 'Phyllites cupanioides is recombined as Pterospermites cupanioides' according to Knowlton 1893
- 'Phyllites cupanioides is recombined as Pterospermites cupanioides'
- 'Phyllites dentata belongs to Phyllites' according to Knowlton 1917
- 'Phyllites dentata belongs to Phyllites'
- 'Phyllites denticulatus belongs to Phyllites' according to Knowlton 1918
- 'Phyllites denticulatus belongs to Phyllites'
- 'Phyllites dubius is recombined as Taxodium dubium'
- 'Phyllites dubius belongs to Phyllites' according to Sternberg 1824
- 'Phyllites dubius is recombined as Taxodium dubium' according to Heer 1855
- 'Phyllites durescens belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites durescens belongs to Phyllites'
- 'Phyllites ellipticus belongs to Phyllites' according to Newberry 1896
- 'Phyllites ellipticus is a subjective synonym of Diospyros amboyensis'
- 'Phyllites erosus belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites erosus belongs to Phyllites'
- 'Phyllites ficifolia belongs to Phyllites' according to Knowlton 1917
- 'Phyllites ficifolia belongs to Phyllites'
- 'Phyllites flexuosus belongs to Phyllites' according to Knowlton 1898
- 'Phyllites flexuosus belongs to Phyllites'
- 'Phyllites fraxineus belongs to Phyllites' according to Lesquereux 1887
- 'Phyllites fraxineus belongs to Phyllites'
- 'Phyllites fremonti belongs to Phyllites' according to Unger 1850
- 'Phyllites fremonti belongs to Phyllites'
- 'Phyllites ilicifolius belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites ilicifolius belongs to Phyllites'
- 'Phyllites improbatus belongs to Phyllites' according to Lesquereux 1878
- 'Phyllites improbatus belongs to Phyllites'
- 'Phyllites inexpectans belongs to Phyllites' according to Knowlton 1902
- 'Phyllites inexpectans belongs to Phyllites'
- 'Phyllites innectens belongs to Phyllites'
- 'Phyllites innectens belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites intricata belongs to Phyllites' according to Knowlton 1918
- 'Phyllites intricata belongs to Phyllites'
- 'Phyllites juglandiformis is recombined as Hicoria juglandiformis'
- 'Phyllites juglandiformis belongs to Phyllites' according to Sternberg 1825
- 'Phyllites juglandiformis is recombined as Hicoria juglandiformis' according to Knowlton 1898
- 'Phyllites lacoei belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites lacoei belongs to Phyllites'
- 'Phyllites laurencianus belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites laurencianus belongs to Phyllites'
- 'Phyllites mahoniaeformis belongs to Phyllites' according to Heer 1865
- 'Phyllites mahoniaeformis belongs to Phyllites'
- 'Phyllites mimusopsoides belongs to Phyllites' according to Lesquereux 1887
- 'Phyllites mimusopsoides belongs to Phyllites'
- 'Phyllites nanus belongs to Phyllites' according to Knowlton 1918
- 'Phyllites nanus belongs to Phyllites'
- 'Phyllites neomexicanus belongs to Phyllites' according to Knowlton 1916
- 'Phyllites neomexicanus belongs to Phyllites'
- 'Phyllites obcordatus belongs to Phyllites' according to Heer 1858
- 'Phyllites obcordatus is a subjective synonym of Liriodendron marcouanum'
- 'Phyllites obscurus belongs to Phyllites' according to Hollick 1895
- 'Phyllites obscurus belongs to Phyllites'
- 'Phyllites obscurus belongs to Phyllites' according to Knowlton 1898
- 'Phyllites obscurus is replaced by Phyllites payettensis'
- 'Phyllites obtusilobatus belongs to Phyllites' according to Heer 1858
- 'Phyllites obtusilobatus is recombined as Liquidambar obtusilobatus' according to Hollick 1898
- 'Phyllites obtusilobatus is recombined as Liquidambar obtusilobatus'
- 'Phyllites orbicularis belongs to Phyllites' according to Newberry 1896
- 'Phyllites orbicularis is recombined as Populus orbicularis' according to Berry 1909
- 'Phyllites orbicularis is recombined as Populus orbicularis'
- 'Phyllites oregonianus belongs to Phyllites' according to Knowlton 1902
- 'Phyllites oregonianus belongs to Phyllites'
- 'Phyllites pachyphyllus belongs to Phyllites' according to Fontaine 1889
- 'Phyllites pachyphyllus is a subjective synonym of Proteaephyllum reniforme'
- 'Phyllites payettensis belongs to Phyllites' according to Knowlton 1898
- 'Phyllites payettensis belongs to Phyllites'
- 'Phyllites perplexus belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites perplexus belongs to Phyllites'
- 'Phyllites personatus belongs to Phyllites' according to Knowlton 1902
- 'Phyllites personatus belongs to Phyllites'
- 'Phyllites petiolatus belongs to Phyllites' according to Knowlton 1916
- 'Phyllites petiolatus belongs to Phyllites'
- 'Phyllites pistiaeformis belongs to Phyllites' according to Berry 1919
- 'Phyllites pistiaeformis belongs to Phyllites'
- 'Phyllites poinsettioides belongs to Phyllites' according to Hollick 1892
- 'Phyllites poinsettioides belongs to Phyllites'
- 'Phyllites populoides belongs to Phyllites' according to Knowlton 1918
- 'Phyllites populoides belongs to Phyllites'
- 'Phyllites protophylloides belongs to Phyllites' according to Knowlton 1918
- 'Phyllites protophylloides belongs to Phyllites'
- 'Phyllites ratonensis belongs to Phyllites' according to Knowlton 1918
- 'Phyllites ratonensis belongs to Phyllites'
- 'Phyllites retusoides belongs to Phyllites' according to Knowlton 1918
- 'Phyllites retusoides belongs to Phyllites'
- 'Phyllites rhoifolius belongs to Phyllites' according to Lesquereux 1868
- 'Phyllites rhoifolius belongs to Phyllites'
- 'Phyllites rosaefolius belongs to Phyllites' according to Knowlton 1918
- 'Phyllites rosaefolius belongs to Phyllites'
- 'Phyllites sapindiformis belongs to Phyllites' according to Lesquereux 1878
- 'Phyllites sapindiformis belongs to Phyllites'
- 'Phyllites sapindus belongs to Phyllites' according to Knowlton 1918
- 'Phyllites sapindus belongs to Phyllites'
- 'Phyllites saundersi belongs to Phyllites' according to Knowlton 1904
- 'Phyllites saundersi belongs to Phyllites'
- 'Phyllites shirleyensis belongs to Phyllites' according to Berry 1919
- 'Phyllites shirleyensis belongs to Phyllites'
- 'Phyllites snowii belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites snowii belongs to Phyllites'
- 'Phyllites stipulaeformis belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites stipulaeformis belongs to Phyllites'
- 'Phyllites sulcatus belongs to Phyllites'
- 'Phyllites sulcatus belongs to Phyllites' according to Lesquereux 1868
- 'Phyllites trapaformis belongs to Phyllites' according to Berry 1911
- 'Phyllites trapaformis belongs to Phyllites'
- 'Phyllites trilobatus belongs to Phyllites' according to Sternberg 1825
- 'Phyllites trilobatus is recombined as Acer trilobatum'
- 'Phyllites truncatus belongs to Phyllites' according to Lesquereux 1869
- 'Phyllites truncatus is recombined as Mimusops truncata'
- 'Phyllites umbonatus belongs to Phyllites' according to Lesquereux 1868
- 'Phyllites umbonatus belongs to Phyllites'
- 'Phyllites undulatus belongs to Phyllites' according to Newberry 1895
- 'Phyllites undulatus belongs to Phyllites'
- 'Phyllites unitus belongs to Phyllites' according to Knowlton and Cockerell 1919
- 'Phyllites vanonae belongs to Phyllites' according to Heer 1866
- 'Phyllites vanonae belongs to Phyllites'
- 'Phyllites venosissimus belongs to Phyllites' according to Newberry 1861
- 'Phyllites venosissimus belongs to Phyllites'
- 'Phyllites venosus belongs to Phyllites' according to Newberry 1868
- 'Phyllites venosus is replaced by Phyllites unitus'
- 'Phyllites venosus belongs to Phyllites' according to Rossmässler 1840
- 'Phyllites vermejoensis belongs to Phyllites'
- 'Phyllites vermejoensis belongs to Phyllites' according to Knowlton 1918
- 'Phyllites walsenburgensis belongs to Phyllites' according to Knowlton 1918
- 'Phyllites walsenburgensis belongs to Phyllites'
- 'Phyllites wascoensis belongs to Phyllites' according to Lesquereux 1888
- 'Phyllites wascoensis belongs to Phyllites'
- 'Phyllites zamiaeformis belongs to Phyllites' according to Lesquereux 1891
- 'Phyllites zamiaeformis belongs to Phyllites'
- 'Phyllocladopsis belongs to Coniferales'
- 'Phyllocladopsis heterophylla belongs to Phyllocladopsis'
- 'Phyllocladus subintegrifolius is recombined as Protophyllocladus subintegrifolius'
- 'Phyllocladus subintegrifolius is recombined as Thinnfeldia subintegrifolia' according to Knowlton 1898
- 'Physagenia is a subjective synonym of Equisetum'
- 'Physagenia parlatorii is recombined as Equisetum parlatorii' according to Schimper 1869
- 'Physagenia parlatorii is recombined as Equisetum parlatorii'
- 'Physematopitys belongs to Coniferales'
- 'Physematopitys goepperti belongs to Physematopitys' according to Platen 1907
- 'Physematopitys goepperti belongs to Physematopitys'
- 'Phytolithus striaticulmis belongs to Phytolithus' according to Martin 1809
- 'Phytolithus striaticulmis is a subjective synonym of Equisetum rogersii'
- 'Picea belongs to Abietineae'
- 'Picea alba belongs to Picea' according to Link 1842
- 'Picea albertensis belongs to Picea' according to Penhallow 1908
- 'Picea albertensis belongs to Picea'
- 'Picea cliffwoodensis belongs to Picea' according to Berry 1906
- 'Picea cliffwoodensis belongs to Picea'
- 'Picea columbiensis belongs to Picea' according to Penhallow 1907
- 'Picea columbiensis belongs to Picea'
- 'Picea harrimani belongs to Picea' according to Knowlton 1904
- 'Picea harrimani belongs to Picea'
- 'Picea quilchensis belongs to Picea' according to Penhallow 1908
- 'Picea quilchensis belongs to Picea'
- 'Picea tranquillensis belongs to Picea' according to Penhallow 1908
- 'Picea tranquillensis belongs to Picea'
- 'Pieris scorbiculata belongs to Pieris' according to Hollick 1904
- 'Pieris scorbiculata belongs to Pieris'
- 'Pimelea delicatula belongs to Pimelea' according to Lesquereux 1883
- 'Pimelea delicatula belongs to Pimelea'
- 'Pinaceae belongs to Coniferales'
- 'Pinites belongs to Abietineae'
- 'Pinites leei belongs to Pinites' according to Fontaine 1905
- 'Pinites leei is recombined as Cedrus leei' according to Berry 1912
- 'Pinites leei is recombined as Cedrus leei'
- 'Pinoxylon is a subjective synonym of Pityoxylon'
- 'Pinoxylon dakotense is recombined as Pityoxylon dakotense' according to Penhallow 1907
- 'Pinoxylon dakotense is recombined as Pityoxylon dakotense'
- 'Pinus belongs to Abietineae'
- 'Pinus andraei belongs to Pinus' according to Coemans 1867
- 'Pinus andraei belongs to Pinus'
- 'Pinus anthraciticus belongs to Pinus' according to Dawson 1892
- 'Pinus anthraciticus belongs to Pinus'
- 'Pinus armstrongi belongs to Pinus' according to Heer 1868
- 'Pinus armstrongi belongs to Pinus'
- 'Pinus attenuata belongs to Pinus' according to Lemmon 1892
- 'Pinus attenuata belongs to Pinus'
- 'Pinus balsamea is recombined as Abies balsamea' according to Miller 1768
- 'Pinus balsamea is recombined as Abies balsamea'
- 'Pinus bathursti belongs to Pinus'
- 'Pinus bathursti belongs to Pinus' according to Heer 1868
- 'Pinus canadensis belongs to Pinus' according to Linnaeus 1763
- 'Pinus canadensis is recombined as Picea canadensis' according to Link 1842
- 'Pinus canadensis belongs to Pinus'
- 'Pinus caribaea belongs to Pinus' according to Morelet 1855
- 'Pinus caribaea belongs to Pinus'
- 'Pinus columbiana belongs to Pinus' according to Penhallow 1907
- 'Pinus columbiana belongs to Pinus'
- 'Pinus conoides belongs to Pinus' according to Perkins 1904
- 'Pinus conoides belongs to Pinus'
- 'Pinus cuneatus belongs to Pinus' according to Perkins 1904
- 'Pinus cuneatus belongs to Pinus'
- 'Pinus delicatulus belongs to Pinus' according to Berry 1904
- 'Pinus delicatulus belongs to Pinus'
- 'Pinus echinata belongs to Pinus' according to Miller 1768
- 'Pinus echinata belongs to Pinus'
- 'Pinus florissanti belongs to Pinus' according to Lesquereux 1883
- 'Pinus florissanti belongs to Pinus'
- 'Pinus gracilistrobus belongs to Pinus'
- 'Pinus hambachi belongs to Pinus' according to Kirchner 1898
- 'Pinus hambachi belongs to Pinus'
- 'Pinus iddingsi belongs to Pinus'
- 'Pinus lardyana belongs to Pinus' according to Heer 1855
- 'Pinus lardyana belongs to Pinus'
- 'Pinus lindgreni [misspelled as Pinus lindgrenii] belongs to Pinus'
- 'Pinus macclurii belongs to Pinus' according to Heer 1868
- 'Pinus macclurii belongs to Pinus'
- 'Pinus macrolepis belongs to Pinus'
- 'Pinus mattewanensis belongs to Pinus' according to Berry 1903
- 'Pinus mattewanensis belongs to Pinus'
- 'Pinus mertensiana belongs to Pinus' according to Bongard 1832
- 'Pinus mertensiana is recombined as Tsuga mertensiana' according to Carrière 1867
- 'Pinus mertensiana is recombined as Tsuga mertensiana'
- 'Pinus nordenskioeldi belongs to Pinus' according to Heer 1876
- 'Pinus nordenskioeldi belongs to Pinus'
- 'Pinus premurrayana belongs to Pinus'
- 'Pinus protoscleropitys belongs to Pinus' according to Holden 1913
- 'Pinus protoscleropitys belongs to Pinus'
- 'Pinus quenstedti belongs to Pinus' according to Heer 1869
- 'Pinus quenstedti belongs to Pinus'
- 'Pinus quinquefolia belongs to Pinus' according to Hollick and Jeffrey 1909
- 'Pinus quinquefolia belongs to Pinus'
- 'Pinus radiata belongs to Pinus' according to Don 1837
- 'Pinus radiata belongs to Pinus'
- 'Pinus raritanensis belongs to Pinus'
- 'Pinus rigida belongs to Pinus' according to Miller 1768
- 'Pinus rigida belongs to Pinus'
- 'Pinus schista belongs to Pinus' according to Ward 1905
- 'Pinus schista is a subjective synonym of Pinus vernonensis'
- 'Pinus scituatensiformis belongs to Pinus' according to Bailey 1911
- 'Pinus scituatensiformis belongs to Pinus'
- 'Pinus shastensis belongs to Pinus' according to Fontaine 1905
- 'Pinus shastensis belongs to Pinus'
- 'Pinus sitchensis belongs to Pinus' according to Bongard 1832
- 'Pinus sitchensis is recombined as Picea sitchensis' according to Carrière 1855
- 'Pinus sitchensis is recombined as Picea sitchensis'
- 'Pinus steenstrupiana belongs to Pinus'
- 'Pinus steenstrupiana belongs to Pinus' according to Heer 1908
- 'Pinus strobus belongs to Pinus'
- 'Pinus sturgisi belongs to Pinus' according to Cockerell 1908
- 'Pinus sturgisi belongs to Pinus'
- 'Pinus susquaensis belongs to Pinus' according to Dawson 1882
- 'Pinus susquaensis belongs to Pinus'
- 'Pinus taeda belongs to Pinus'
- 'Pinus taxifolia belongs to Pinus' according to Lambert 1803
- 'Pinus taxifolia is recombined as Pseudotsuga taxifolia' according to Britton 1889
- 'Pinus taxifolia is recombined as Pseudotsuga taxifolia'
- 'Pinus tetraphylla belongs to Pinus' according to Jeffrey 1908
- 'Pinus tetraphylla belongs to Pinus'
- 'Pinus triphylla belongs to Pinus' according to Hollick and Jeffrey 1909
- 'Pinus triphylla belongs to Pinus'
- 'Pinus trunculus belongs to Pinus' according to Dawson 1888
- 'Pinus trunculus belongs to Pinus'
- 'Pinus tulameenensis belongs to Pinus' according to Penhallow 1908
- 'Pinus tulameenensis belongs to Pinus'
- 'Pinus vernonensis belongs to Pinus'
- 'Pinus vernonensis belongs to Pinus' according to Ward 1905
- 'Pinus wardii belongs to Pinus'
- 'Pinus wheeleri belongs to Pinus' according to Cockerell 1908
- 'Pinus wheeleri belongs to Pinus'
- 'Piper belongs to Piperaceae'
- 'Piper heerii belongs to Piper' according to Lesquereux 1888
- 'Piper heerii belongs to Piper'
- 'Piperaceae belongs to Piperales'
- 'Piperales belongs to Dicotyledones'
- 'Piperites belongs to Piperaceae'
- 'Piperites tuscaloosensis belongs to Piperites' according to Berry 1919
- 'Piperites tuscaloosensis belongs to Piperites'
- 'Pirolaceae belongs to Ericales'
- 'Pisonia belongs to Nyctaginaceae'
- 'Pisonia chlorophylloides belongs to Pisonia' according to Berry 1916
- 'Pisonia chlorophylloides belongs to Pisonia'
- 'Pisonia claibornensis belongs to Pisonia'
- 'Pisonia cretacea belongs to Pisonia' according to Berry 1910
- 'Pisonia cretacea belongs to Pisonia'
- 'Pisonia eolignitica belongs to Pisonia'
- 'Pisonia eolignitica belongs to Pisonia' according to Berry 1916
- 'Pisonia puryearensis belongs to Pisonia' according to Berry 1916
- 'Pisonia puryearensis belongs to Pisonia'
- 'Pisonia racemosa belongs to Pisonia' according to Lesquereux 1873
- 'Pisonia racemosa belongs to Pisonia'
- 'Pistacia belongs to Anacardiaceae'
- 'Pistacia aquehongensis belongs to Pistacia' according to Hollick 1898
- 'Pistacia aquehongensis belongs to Pistacia'
- 'Pistia belongs to Araceae'
- 'Pistia claibornensis belongs to Pistia'
- 'Pistia corrugata belongs to Pistia' according to Lesquereux 1874
- 'Pistia corrugata belongs to Pistia'
- 'Pistia spathulata belongs to Pistia' according to Michaux 1803
- 'Pistia spathulata belongs to Pistia'
- 'Pistia wilcoxensis belongs to Pistia'
- 'Pistia wilcoxensis belongs to Pistia' according to Berry 1916
- 'Pithecolobium belongs to Mimosaceae'
- 'Pithecolobium eocenicum belongs to Pithecolobium' according to Berry 1916
- 'Pithecolobium eocenicum belongs to Pithecolobium'
- 'Pithecolobium oxfordensis belongs to Pithecolobium' according to Berry 1916
- 'Pithecolobium oxfordensis belongs to Pithecolobium'
- 'Pityoidolepis belongs to Coniferales'
- 'Pityoidolepis statenensis belongs to Pityoidolepis'
- 'Pityophyllum belongs to Abietineae'
- 'Pityophyllum nordenskioeldi belongs to Pityophyllum' according to Heer 1899
- 'Pityophyllum nordenskioeldi belongs to Pityophyllum'
- 'Pityoxylon belongs to Abietineae'
- 'Pityoxylon aldersoni belongs to Pityoxylon' according to Knowlton 1898
- 'Pityoxylon aldersoni belongs to Pityoxylon'
- 'Pityoxylon amethystinum belongs to Pityoxylon'
- 'Pityoxylon annulatum belongs to Pityoxylon' according to Platen 1907
- 'Pityoxylon annulatum belongs to Pityoxylon'
- 'Pityoxylon anomalum belongs to Pityoxylon' according to Holden 1913
- 'Pityoxylon anomalum belongs to Pityoxylon'
- 'Pityoxylon columbina belongs to Pityoxylon'
- 'Pityoxylon columbina belongs to Pityoxylon' according to Penhallow 1907
- 'Pityoxylon fallax belongs to Pityoxylon' according to Felix 1896
- 'Pityoxylon fallax belongs to Pityoxylon'
- 'Pityoxylon foliosum belongs to Pityoxylon' according to Holden 1913
- 'Pityoxylon foliosum belongs to Pityoxylon'
- 'Pityoxylon hollicki belongs to Pityoxylon' according to Knowlton 1897
- 'Pityoxylon hollicki belongs to Pityoxylon'
- 'Pityoxylon inaequale belongs to Pityoxylon' according to Felix 1886
- 'Pityoxylon inaequale belongs to Pityoxylon'
- 'Pityoxylon krausei belongs to Pityoxylon' according to Felix 1886
- 'Pityoxylon macclurii belongs to Pityoxylon' according to Cramer 1870
- 'Pityoxylon macclurii belongs to Pityoxylon'
- 'Pityoxylon pealei belongs to Pityoxylon'
- 'Pityoxylon pealei belongs to Pityoxylon' according to Knowlton 1896
- 'Pityoxylon scituatense belongs to Pityoxylon' according to Jeffrey and Chrysler 1906
- 'Pityoxylon scituatense belongs to Pityoxylon'
- 'Pityoxylon statenense belongs to Pityoxylon' according to Jeffrey and Chrysler 1906
- 'Pityoxylon statenense belongs to Pityoxylon'
- 'Pityoxylon vateri belongs to Pityoxylon' according to Platen 1907
- 'Pityoxylon vateri belongs to Pityoxylon'
- 'Plagiopodopsis belongs to Grimmiaceae'
- 'Plagiopodopsis scudderi belongs to Plagiopodopsis'
- 'Planera belongs to Ulmaceae'
- 'Planera aquatica belongs to Planera' according to Walter 1791
- 'Planera aquatica belongs to Planera'
- 'Planera betuloides belongs to Planera' according to Hollick 1906
- 'Planera betuloides belongs to Planera'
- 'Planera crenata belongs to Planera' according to Newberry 1882
- 'Planera crenata is replaced by Planera lingualis'
- 'Planera crenata belongs to Planera' according to Desfontaines 1815
- 'Planera cretacea belongs to Planera' according to Berry 1907
- 'Planera cretacea belongs to Planera'
- 'Planera dubia belongs to Planera' according to Lesquereux 1859
- 'Planera dubia is a subjective synonym of Planera ungeri'
- 'Planera knowltoniana belongs to Planera' according to Hollick 1895
- 'Planera knowltoniana belongs to Planera'
- 'Planera lingualis belongs to Planera' according to Knowlton and Cockerell 1919
- 'Planera longifolia belongs to Planera' according to Lesquereux 1872
- 'Planera longifolia is recombined as Fagus longifolia' according to Hollick and Cockerell 1908
- 'Planera longifolia is recombined as Zelkova longifolia' according to Engler 1888
- 'Planera longifolia is recombined as Fagopsis longifolia' according to Hollick 1909
- 'Planera longifolia is recombined as Fagopsis longifolia'
- 'Planera longifolia myricaefolia belongs to Planera longifolia' according to Lesquereux 1883
- 'Planera longifolia myricaefolia is recombined as Planera myricaefolia' according to Cockerell 1908
- 'Planera longifolia myricaefolia is recombined as Planera myricaefolia'
- 'Planera microphylla belongs to Planera'
- 'Planera microphylla belongs to Planera' according to Newberry 1868
- 'Planera nervosa belongs to Planera' according to Newberry 1882
- 'Planera nervosa belongs to Planera'
- 'Planera ungeri belongs to Planera' according to Ettingshausen 1851
- 'Planera ungeri belongs to Planera'
- 'Planera variabilis belongs to Planera'
- 'Planera variabilis belongs to Planera' according to Newberry 1882
- 'Plantaginopsis belongs to Xyridaceae'
- 'Plantaginopsis marylandica belongs to Plantaginopsis'
- 'Platanaceae belongs to Platanales'
- 'Platanales belongs to Dicotyledones'
- 'Plataninium belongs to Platanaceae'
- 'Plataninium crystallophilum belongs to Plataninium' according to Platen 1907
- 'Plataninium crystallophilum belongs to Plataninium'
- 'Plataninium haydeni belongs to Plataninium' according to Felix 1896
- 'Plataninium haydeni belongs to Plataninium'
- 'Plataninium knowltoni belongs to Plataninium' according to Platen 1907
- 'Plataninium knowltoni belongs to Plataninium'
- 'Plataninium pacificum belongs to Plataninium' according to Platen 1907
- 'Plataninium pacificum belongs to Plataninium'
- 'Platanophyllum crassinerve is recombined as Araliaephyllum crassinerve' according to Berry 1912
- 'Platanophyllum crassinerve is recombined as Araliaephyllum crassinerve'
- 'Platanus belongs to Platanaceae'
- 'Platanus aceroides belongs to Platanus' according to Göppert 1852
- 'Platanus aceroides belongs to Platanus'
- 'Platanus aceroides latior belongs to Platanus aceroides' according to Lesquereux 1868
- 'Platanus aceroides latior is recombined as Platanus latior' according to Knowlton 1898
- 'Platanus aceroides latior is recombined as Platanus latior'
- 'Platanus appendiculata belongs to Platanus'
- 'Platanus aquehongensis belongs to Platanus' according to Hollick 1892
- 'Platanus aquehongensis belongs to Platanus'
- 'Platanus aspera belongs to Platanus'
- 'Platanus aspera belongs to Platanus' according to Newberry 1882
- 'Platanus asperaeformis belongs to Platanus' according to Berry 1919
- 'Platanus asperaeformis belongs to Platanus'
- 'Platanus basilobata belongs to Platanus' according to Ward 1885
- 'Platanus basilobata belongs to Platanus'
- 'Platanus cissoides belongs to Platanus' according to Lesquereux 1891
- 'Platanus cissoides belongs to Platanus'
- 'Platanus cordata belongs to Platanus' according to Knowlton 1898
- 'Platanus cordata belongs to Platanus'
- 'Platanus diminutivus belongs to Platanus' according to Lesquereux 1868
- 'Platanus diminutivus is corrected as Platanus diminutiva and belongs to Platanus' according to Lesquereux 1874
- 'Platanus diminutivus is corrected as Platanus diminutiva and belongs to Platanus'
- 'Platanus dissecta belongs to Platanus'
- 'Platanus guillelmae belongs to Platanus'
- 'Platanus guillelmae belongs to Platanus' according to Göppert 1852
- 'Platanus haydenii belongs to Platanus' according to Newberry 1868
- 'Platanus haydenii belongs to Platanus'
- 'Platanus heerii belongs to Platanus' according to Lesquereux 1871
- 'Platanus heerii belongs to Platanus'
- 'Platanus heterophyllus belongs to Platanus' according to Newberry 1875
- 'Platanus heterophyllus belongs to Platanus'
- 'Platanus kuemmellii belongs to Platanus' according to Berry 1906
- 'Platanus kuemmellii belongs to Platanus'
- 'Platanus latiloba belongs to Platanus' according to Newberry 1868
- 'Platanus latiloba is recombined as Sassafras latilobum'
- 'Platanus montana belongs to Platanus'
- 'Platanus newberrii belongs to Platanus' according to Lesquereux 1868
- 'Platanus newberrii is corrected as Platanus newberryana and belongs to Platanus' according to Heer 1866
- 'Platanus newberrii is corrected as Platanus newberryana and belongs to Platanus'
- 'Platanus nobilis belongs to Platanus'
- 'Platanus obtusiloba belongs to Platanus' according to Lesquereux 1868
- 'Platanus obtusiloba belongs to Platanus'
- 'Platanus occidentalis belongs to Platanus'
- 'Platanus primaeva belongs to Platanus' according to Lesquereux 1874
- 'Platanus primaeva is a subjective synonym of Platanus latior'
- 'Platanus raynoldsi [misspelled as Platanus raynoldsii] belongs to Platanus'
- 'Platanus regularis belongs to Platanus' according to Knowlton 1918
- 'Platanus regularis belongs to Platanus'
- 'Platanus rhomboidea belongs to Platanus'
- 'Platanus rhomboidea belongs to Platanus' according to Lesquereux 1873
- 'Platanus ripleyensis belongs to Platanus' according to Berry 1919
- 'Platanus ripleyensis belongs to Platanus'
- 'Platanus shirleyensis belongs to Platanus' according to Berry 1914
- 'Platanus shirleyensis belongs to Platanus'
- 'Platanus wardii belongs to Platanus' according to Knowlton 1900
- 'Platanus wardii belongs to Platanus'
- 'Platypterygium belongs to Cycadaceae'
- 'Platypterygium densinerve belongs to Platypterygium' according to Fontaine 1889
- 'Platypterygium densinerve belongs to Platypterygium'
- 'Platypterygium rogersianum belongs to Platypterygium' according to Fontaine 1889
- 'Platypterygium rogersianum belongs to Platypterygium'
- 'Poacites belongs to Gramineae'
- 'Poacites laevis belongs to Poacites' according to Braun 1871
- 'Poacites laevis belongs to Poacites'
- 'Poacites mengeanus belongs to Poacites'
- 'Poacites mengeanus belongs to Poacites' according to Heer 1859
- 'Poacites tenuestriatus belongs to Poacites' according to Heer 1869
- 'Poacites tenuestriatus belongs to Poacites'
- 'Podocarpeae belongs to Taxaceae'
- 'Podocarpites belongs to Podocarpeae'
- 'Podocarpites tyrrellii belongs to Podocarpites' according to Dawson 1887
- 'Podocarpites tyrrellii belongs to Podocarpites'
- 'Podocarpoxylon belongs to Podocarpeae'
- 'Podocarpus belongs to Podocarpeae'
- 'Podocarpus stantoni belongs to Podocarpus' according to Knowlton 1916
- 'Podocarpus stantoni belongs to Podocarpus'
- 'Podogonium belongs to Leguminosae'
- 'Podogonium acuminatum belongs to Podogonium' according to Lesquereux 1883
- 'Podogonium acuminatum belongs to Podogonium'
- 'Podogonium americanum belongs to Podogonium' according to Lesquereux 1878
- 'Podogonium americanum belongs to Podogonium'
- 'Podogonium virginianum belongs to Podogonium' according to Berry 1909
- 'Podogonium virginianum belongs to Podogonium'
- 'Podozamites belongs to Cycadaceae'
- 'Podozamites acuminatus belongs to Podozamites' according to Hollick 1895
- 'Podozamites acuminatus belongs to Podozamites'
- 'Podozamites acutifolius belongs to Podozamites' according to Fontaine 1889
- 'Podozamites acutifolius belongs to Podozamites'
- 'Podozamites carolinensis belongs to Podozamites' according to Fontaine 1900
- 'Podozamites carolinensis belongs to Podozamites'
- 'Podozamites caudatus belongs to Podozamites' according to Lesquereux 1883
- 'Podozamites caudatus is recombined as Dammarites caudatus' according to Lesquereux 1891
- 'Podozamites caudatus is recombined as Dammarites caudatus'
- 'Podozamites distantinervis belongs to Podozamites' according to Fontaine 1889
- 'Podozamites distantinervis belongs to Podozamites'
- 'Podozamites eichwaldi belongs to Podozamites' according to Schimper 1870
- 'Podozamites eichwaldi is a subjective synonym of Podozamites lanceolatus'
- 'Podozamites emarginatus belongs to Podozamites' according to Lesquereux 1883
- 'Podozamites emarginatus is recombined as Dammarites emarginatus' according to Lesquereux 1891
- 'Podozamites emarginatus is recombined as Dammarites emarginatus'
- 'Podozamites emmonsii belongs to Podozamites'
- 'Podozamites emmonsii belongs to Podozamites' according to Newberry 1866
- 'Podozamites formosus belongs to Podozamites' according to Brown 1911
- 'Podozamites formosus belongs to Podozamites'
- 'Podozamites grandifolius belongs to Podozamites' according to Fontaine 1889
- 'Podozamites grandifolius belongs to Podozamites'
- 'Podozamites knowltoni belongs to Podozamites'
- 'Podozamites lanceolatus is a subjective synonym of Podozamites emmonsii'
- 'Podozamites longifolius belongs to Podozamites'
- 'Podozamites longifolius is recombined as Dioonites longifolius' according to Fontaine 1883
- 'Podozamites marginatus belongs to Podozamites' according to Heer 1882
- 'Podozamites marginatus belongs to Podozamites'
- 'Podozamites nervosa belongs to Podozamites' according to Newberry 1891
- 'Podozamites nervosa is replaced by Podozamites newberryi'
- 'Podozamites newberryi belongs to Podozamites'
- 'Podozamites oblongus belongs to Podozamites' according to Lesquereux 1883
- 'Podozamites oblongus belongs to Podozamites'
- 'Podozamites pachynervis belongs to Podozamites' according to Fontaine 1905
- 'Podozamites pachynervis belongs to Podozamites'
- 'Podozamites pachyphyllus belongs to Podozamites' according to Fontaine 1905
- 'Podozamites pachyphyllus belongs to Podozamites'
- 'Podozamites pedicellatus belongs to Podozamites' according to Fontaine 1889
- 'Podozamites pedicellatus is a subjective synonym of Podozamites distantinervis'
- 'Podozamites praelongus belongs to Podozamites' according to Lesquereux 1883
- 'Podozamites praelongus is a subjective synonym of Dammarites caudatus'
- 'Podozamites proximans belongs to Podozamites' according to Conrad 1869
- 'Podozamites proximans belongs to Podozamites'
- 'Podozamites pulchellus belongs to Podozamites' according to Heer 1876
- 'Podozamites pulchellus belongs to Podozamites'
- 'Podozamites stenopus belongs to Podozamites' according to Lesquereux 1891
- 'Podozamites stenopus belongs to Podozamites'
- 'Podozamites subfalcatus belongs to Podozamites' according to Fontaine 1889
- 'Podozamites subfalcatus belongs to Podozamites'
- 'Podozamites taylorsvillensis belongs to Podozamites' according to Ward 1900
- 'Podozamites taylorsvillensis is recombined as Pterophyllum taylorsvillensis'
- 'Podozamites tenuinervis belongs to Podozamites' according to Heer 1882
- 'Podozamites tenuinervis belongs to Podozamites'
- 'Polemoniales belongs to Dicotyledones'
- 'Polygonaceae belongs to Polygonales'
- 'Polygonales belongs to Dicotyledones'
- 'Polygonum belongs to Polygonaceae'
- 'Polygonum tertiarium belongs to Polygonum' according to Small 1895
- 'Polygonum tertiarium is recombined as Persicaria tertiaria' according to Cockerell 1908
- 'Polygonum tertiarium is recombined as Persicaria tertiaria'
- 'Polypodiaceae belongs to Filicales'
- 'Polypodium belongs to Polypodiaceae'
- 'Polypodium dentatum belongs to Polypodium' according to Fontaine 1889
- 'Polypodium dentatum belongs to Polypodium'
- 'Polypodium fadyenioide belongs to Polypodium' according to Fontaine 1889
- 'Polypodium fadyenioide belongs to Polypodium'
- 'Polypodium oregonense belongs to Polypodium' according to Fontaine 1905
- 'Polypodium oregonense belongs to Polypodium'
- 'Polystichum belongs to Polypodiaceae'
- 'Polystichum hillsianum belongs to Polystichum' according to Hollick 1902
- 'Polystichum hillsianum belongs to Polystichum'
- 'Polytrichaceae belongs to Bryales'
- 'Polytrichum belongs to Polytrichaceae'
- 'Polytrichum florissanti belongs to Polytrichum' according to Knowlton 1916
- 'Polytrichum florissanti belongs to Polytrichum'
- 'Pomaceae belongs to Rosales'
- 'Pontederiaceae belongs to Xyridales'
- 'Populites belongs to Salicaceae'
- 'Populites affinis belongs to Populites' according to Lesquereux 1872
- 'Populites affinis is recombined as Cissites affinis' according to Lesquereux 1874
- 'Populites affinis is recombined as Cissites affinis'
- 'Populites amplus belongs to Populites' according to Knowlton 1918
- 'Populites amplus belongs to Populites'
- 'Populites elegans belongs to Populites' according to Lesquereux 1868
- 'Populites elegans belongs to Populites'
- 'Populites fagifolia belongs to Populites' according to Lesquereux 1872
- 'Populites fagifolia is a subjective synonym of Grewiopsis flabellata'
- 'Populites flabellata belongs to Populites' according to Lesquereux 1868
- 'Populites flabellata is recombined as Grewiopsis flabellata' according to Knowlton 1898
- 'Populites flabellata is recombined as Grewiopsis flabellata'
- 'Populites microphyllus belongs to Populites' according to Lesquereux 1869
- 'Populites microphyllus belongs to Populites'
- 'Populites ovata belongs to Populites' according to Lesquereux 1868
- 'Populites ovata is recombined as Celtis ovata' according to Lesquereux 1874
- 'Populites ovata is recombined as Ampelophyllum ovatum' according to Lesquereux 1876
- 'Populites ovata is recombined as Ampelophyllites ovatus'
- 'Populites probalsamifera belongs to Populites' according to Dawson 1893
- 'Populites probalsamifera belongs to Populites'
- 'Populites quadrangularis belongs to Populites' according to Lesquereux 1868
- 'Populites quadrangularis is recombined as Alnites quadrangularis' according to Lesquereux 1874
- 'Populites quadrangularis is recombined as Hamamelites quadrangularis' according to Lesquereux 1883
- 'Populites quadrangularis is recombined as Hamamelites quadrangularis'
- 'Populites salinae belongs to Populites' according to Lesquereux 1872
- 'Populites salinae is recombined as Menispermites salinae' according to Knowlton 1898
- 'Populites salinae is recombined as Menispermites salinae'
- 'Populites salinae [misspelled as Menispermites salinensis] belongs to Menispermites' according to Lesquereux 1874
- 'Populites salisburyiaefolius belongs to Populites' according to Lesquereux 1868
- 'Populites salisburyiaefolius is a subjective synonym of Araliopsoides cretacea'
- 'Populites salisburyiaefolius is recombined as Cissites salisburiaefolius' according to Lesquereux 1892
- 'Populites sternbergii belongs to Populites' according to Lesquereux 1891
- 'Populites sternbergii belongs to Populites'
- 'Populites tenuifolius belongs to Populites' according to Berry 1903
- 'Populites tenuifolius belongs to Populites'
- 'Populites tuscaloosensis belongs to Populites' according to Berry 1919
- 'Populites tuscaloosensis belongs to Populites'
- 'Populites winchelli belongs to Populites' according to Lesquereux 1893
- 'Populites winchelli belongs to Populites'
- 'Populophyllum belongs to Salicaceae'
- 'Populophyllum crassinerve belongs to Populophyllum' according to Fontaine 1889
- 'Populophyllum crassinerve belongs to Populophyllum'
- 'Populophyllum hederaeforme belongs to Populophyllum' according to Fontaine 1889
- 'Populophyllum hederaeforme is a subjective synonym of Populophyllum reniforme'
- 'Populophyllum menispermoides belongs to Populophyllum' according to Ward 1905
- 'Populophyllum menispermoides is a subjective synonym of Populophyllum reniforme'
- 'Populophyllum minutum belongs to Populophyllum' according to Ward 1905
- 'Populophyllum minutum belongs to Populophyllum'
- 'Populophyllum reniforme belongs to Populophyllum'
- 'Populus belongs to Salicaceae'
- 'Populus acerifolia belongs to Populus' according to Newberry 1868
- 'Populus acerifolia is a subjective synonym of Populus newberryi'
- 'Populus acerifolia belongs to Populus' according to Loddiges 1838
- 'Populus aequalis belongs to Populus' according to Lesquereux 1870
- 'Populus aequalis belongs to Populus'
- 'Populus amblyrhyncha belongs to Populus' according to Ward 1885
- 'Populus amblyrhyncha belongs to Populus'
- 'Populus anomala belongs to Populus'
- 'Populus apiculata is recombined as Cordia apiculata' according to Berry 1916
- 'Populus apiculata is recombined as Cordia apiculata'
- 'Populus apiculata belongs to Populus' according to Hollick 1892
- 'Populus arctica belongs to Populus' according to Heer 1868
- 'Populus arctica belongs to Populus'
- 'Populus aristolochioides belongs to Populus'
- 'Populus aristolochioides belongs to Populus' according to Lesquereux 1875
- 'Populus auriculata belongs to Populus' according to Ward 1905
- 'Populus auriculata belongs to Populus'
- 'Populus balsamifera belongs to Populus'
- 'Populus balsamoides belongs to Populus'
- 'Populus berggreni belongs to Populus' according to Heer 1871
- 'Populus berggreni belongs to Populus'
- 'Populus clarkiana belongs to Populus' according to Hollick 1906
- 'Populus clarkiana belongs to Populus'
- 'Populus cordata belongs to Populus' according to Newberry 1868
- 'Populus cordata belongs to Populus'
- 'Populus cordifolia is replaced by Populus dakotana'
- 'Populus cordifolia belongs to Populus' according to Burgsdorf 1787
- 'Populus cordifolia belongs to Populus' according to Newberry 1868
- 'Populus craspedodroma belongs to Populus' according to Ward 1885
- 'Populus craspedodroma belongs to Populus'
- 'Populus cretacea belongs to Populus' according to Knowlton 1905
- 'Populus cretacea belongs to Populus'
- 'Populus cuneata belongs to Populus' according to Newberry 1868
- 'Populus cuneata belongs to Populus'
- 'Populus cyclomorpha belongs to Populus' according to Knowlton and Cockerell 1919
- 'Populus cyclophylla belongs to Populus' according to Heer 1858
- 'Populus cyclophylla is recombined as Populites cyclophylla' according to Lesquereux 1868
- 'Populus dakotana belongs to Populus' according to Cockerell 1906
- 'Populus dakotana belongs to Populus'
- 'Populus daphnogenoides belongs to Populus' according to Ward 1885
- 'Populus daphnogenoides belongs to Populus'
- 'Populus debeyana is recombined as Juglans debeyana'
- 'Populus debeyana belongs to Populus' according to Heer 1866
- 'Populus debeyana is recombined as Juglans debeyana' according to Lesquereux 1866
- 'Populus decipiens belongs to Populus' according to Lesquereux 1872
- 'Populus decipiens belongs to Populus'
- 'Populus deltoides belongs to Populus' according to Marshall 1785
- 'Populus deltoides belongs to Populus'
- 'Populus denticulata belongs to Populus' according to Heer 1883
- 'Populus denticulata belongs to Populus'
- 'Populus elliptica belongs to Populus' according to Newberry 1868
- 'Populus elliptica belongs to Populus'
- 'Populus eotremuloides belongs to Populus' according to Knowlton 1898
- 'Populus eotremuloides belongs to Populus'
- 'Populus eximia belongs to Populus' according to Göppert 1855
- 'Populus eximia is a subjective synonym of Populus balsamoides'
- 'Populus flabellum belongs to Populus' according to Newberry 1863
- 'Populus flabellum belongs to Populus'
- 'Populus genetrix belongs to Populus' according to Newberry 1868
- 'Populus genetrix belongs to Populus'
- 'Populus glandulifera belongs to Populus'
- 'Populus glandulifera belongs to Populus' according to Heer 1856
- 'Populus grandidentata belongs to Populus' according to Michaux 1803
- 'Populus grandidentata belongs to Populus'
- 'Populus grewiopsis belongs to Populus' according to Ward 1885
- 'Populus grewiopsis belongs to Populus'
- 'Populus harkeriana belongs to Populus' according to Lesquereux 1891
- 'Populus harkeriana belongs to Populus'
- 'Populus hederoides belongs to Populus' according to Ward 1885
- 'Populus hederoides belongs to Populus'
- 'Populus hookeri belongs to Populus' according to Heer 1868
- 'Populus hookeri belongs to Populus'
- 'Populus hyperborea belongs to Populus' according to Heer 1873
- 'Populus hyperborea belongs to Populus'
- 'Populus inaequalis belongs to Populus' according to Ward 1885
- 'Populus inaequalis belongs to Populus'
- 'Populus kansaseana belongs to Populus' according to Lesquereux 1891
- 'Populus kansaseana belongs to Populus'
- 'Populus knightii belongs to Populus' according to Knowlton 1897
- 'Populus knightii belongs to Populus'
- 'Populus laevigata belongs to Populus' according to Lesquereux 1868
- 'Populus laevigata is replaced by Populus aequalis'
- 'Populus laevigata belongs to Populus' according to Aiton 1789
- 'Populus lancastriensis belongs to Populus' according to Lesquereux 1868
- 'Populus lancastriensis is recombined as Populites lancastriensis' according to Lesquereux 1874
- 'Populus lancastriensis is recombined as Populites lancastriensis'
- 'Populus latidentata belongs to Populus' according to Dawson 1885
- 'Populus latidentata belongs to Populus'
- 'Populus latior belongs to Populus' according to Braun 1835
- 'Populus latior belongs to Populus'
- 'Populus lesquereuxi belongs to Populus'
- 'Populus leuce belongs to Populus' according to Rossmässler 1850
- 'Populus leuce belongs to Populus'
- 'Populus leucophylla belongs to Populus' according to Unger 1850
- 'Populus leucophylla belongs to Populus'
- 'Populus lindgreni belongs to Populus'
- 'Populus lindgreni belongs to Populus' according to Knowlton 1898
- 'Populus litigiosa belongs to Populus' according to Heer 1866
- 'Populus litigiosa is recombined as Populites litigiosus' according to Lesquereux 1891
- 'Populus litigiosa is recombined as Populites litigiosus'
- 'Populus longior belongs to Populus' according to Dawson 1882
- 'Populus longior belongs to Populus'
- 'Populus meedsii belongs to Populus' according to Knowlton 1893
- 'Populus meedsii belongs to Populus'
- 'Populus melanarioides belongs to Populus' according to Lesquereux 1875
- 'Populus melanarioides belongs to Populus'
- 'Populus menispermoides belongs to Populus' according to Ward 1905
- 'Populus menispermoides is a subjective synonym of Populus potomacensis'
- 'Populus microphylla belongs to Populus' according to Newberry 1868
- 'Populus microphylla belongs to Populus'
- 'Populus microtremuloides belongs to Populus' according to Knowlton 1916
- 'Populus microtremuloides belongs to Populus'
- 'Populus monodon belongs to Populus' according to Lesquereux 1869
- 'Populus monodon is recombined as Ficus monodon' according to Berry 1916
- 'Populus monodon is recombined as Ficus monodon'
- 'Populus mutabilis belongs to Populus' according to Heer 1856
- 'Populus mutabilis belongs to Populus'
- 'Populus nebrascensis belongs to Populus' according to Newberry 1868
- 'Populus nebrascensis belongs to Populus'
- 'Populus neomexicana belongs to Populus'
- 'Populus neomexicana belongs to Populus' according to Knowlton 1918
- 'Populus neotremuloides belongs to Populus' according to Knowlton 1918
- 'Populus neotremuloides belongs to Populus'
- 'Populus nervosa belongs to Populus' according to Newberry 1868
- 'Populus nervosa belongs to Populus'
- 'Populus newberryi belongs to Populus' according to Cockerell 1906
- 'Populus newberryi belongs to Populus'
- 'Populus obovata belongs to Populus' according to Knowlton 1900
- 'Populus obovata belongs to Populus'
- 'Populus obtrita belongs to Populus' according to Dawson 1890
- 'Populus obtrita belongs to Populus'
- 'Populus occidentalis belongs to Populus' according to Knowlton 1898
- 'Populus occidentalis belongs to Populus'
- 'Populus oxyrhyncha belongs to Populus' according to Ward 1885
- 'Populus oxyrhyncha belongs to Populus'
- 'Populus polymorpha belongs to Populus' according to Newberry 1882
- 'Populus polymorpha belongs to Populus'
- 'Populus potomacensis belongs to Populus' according to Ward 1895
- 'Populus potomacensis belongs to Populus'
- 'Populus problematica belongs to Populus' according to Knowlton 1893
- 'Populus problematica belongs to Populus'
- 'Populus protozaddachi belongs to Populus' according to Dawson 1882
- 'Populus protozaddachi belongs to Populus'
- 'Populus pseudocredneria belongs to Populus'
- 'Populus pseudocredneria belongs to Populus' according to Cockerell 1908
- 'Populus pseudotremuloides belongs to Populus' according to Hollick 1906
- 'Populus pseudotremuloides belongs to Populus'
- 'Populus pyrifolia belongs to Populus' according to Kirchner 1898
- 'Populus pyrifolia belongs to Populus'
- 'Populus rectinervata belongs to Populus' according to Dawson 1882
- 'Populus rectinervata belongs to Populus'
- 'Populus rhomboidea belongs to Populus' according to Newberry 1859
- 'Populus rhomboidea belongs to Populus'
- 'Populus ricei belongs to Populus' according to Fontaine 1905
- 'Populus ricei belongs to Populus'
- 'Populus richardsoni belongs to Populus' according to Heer 1868
- 'Populus richardsoni belongs to Populus'
- 'Populus rotundifolia belongs to Populus' according to Newberry 1882
- 'Populus rotundifolia is replaced by Populus cyclomorpha'
- 'Populus rotundifolia belongs to Populus' according to Griffith 1847
- 'Populus russelli belongs to Populus' according to Knowlton 1893
- 'Populus russelli belongs to Populus'
- 'Populus scudderi belongs to Populus'
- 'Populus scudderi belongs to Populus' according to Cockerell 1906
- 'Populus smilacifolia belongs to Populus' according to Newberry 1868
- 'Populus smilacifolia belongs to Populus'
- 'Populus speciosa belongs to Populus' according to Ward 1885
- 'Populus speciosa belongs to Populus'
- 'Populus stygia belongs to Populus' according to Heer 1873
- 'Populus stygia belongs to Populus'
- 'Populus subrotunda belongs to Populus' according to Lesquereux 1868
- 'Populus subrotunda belongs to Populus'
- 'Populus subrotunda [misspelled as Populus subrotundata] belongs to Populus' according to Lesquereux 1878
- 'Populus tenuinervata belongs to Populus' according to Lesquereux 1888
- 'Populus tenuinervata belongs to Populus'
- 'Populus trichocarpa belongs to Populus' according to Torrey and Gray 1852
- 'Populus trichocarpa belongs to Populus'
- 'Populus trinervis belongs to Populus' according to Dawson 1882
- 'Populus trinervis belongs to Populus'
- 'Populus ungeri belongs to Populus' according to Lesquereux 1878
- 'Populus ungeri belongs to Populus'
- 'Populus vivaria belongs to Populus'
- 'Populus wardii belongs to Populus' according to Knowlton 1900
- 'Populus wardii belongs to Populus'
- 'Populus whitei belongs to Populus' according to Ward 1885
- 'Populus whitei belongs to Populus'
- 'Populus xantholithensis belongs to Populus'
- 'Populus zaddachi belongs to Populus' according to Heer 1859
- 'Populus zaddachi belongs to Populus'
- 'Porana belongs to Convolvulaceae'
- 'Porana cockerelli belongs to Porana' according to Knowlton 1916
- 'Porana cockerelli belongs to Porana'
- 'Porana similis belongs to Porana' according to Knowlton 1916
- 'Porana similis belongs to Porana'
- 'Porana speirii belongs to Porana' according to Lesquereux 1883
- 'Porana speirii belongs to Porana'
- 'Porana tenuis belongs to Porana' according to Lesquereux 1883
- 'Porana tenuis belongs to Porana'
- 'Potamogeton belongs to Potamogetonaceae'
- 'Potamogeton geniculatus belongs to Potamogeton' according to Braun 1845
- 'Potamogeton geniculatus belongs to Potamogeton'
- 'Potamogeton megaphyllus belongs to Potamogeton'
- 'Potamogeton middendorfensis belongs to Potamogeton'
- 'Potamogeton natans belongs to Potamogeton'
- 'Potamogeton pectinatus belongs to Potamogeton'
- 'Potamogeton perfoliatus belongs to Potamogeton'
- 'Potamogeton pusillus belongs to Potamogeton'
- 'Potamogeton robbinsii belongs to Potamogeton' according to Oakes 1896
- 'Potamogeton robbinsii belongs to Potamogeton'
- 'Potamogeton rutilus belongs to Potamogeton' according to Wolfgang 1885
- 'Potamogeton rutilus belongs to Potamogeton'
- 'Potamogeton rutilus [misspelled as Potamogeton rutilans] belongs to Potamogeton' according to Penhallow 1890
- 'Potamogeton verticillatus belongs to Potamogeton'
- 'Potamogeton verticillatus belongs to Potamogeton' according to Lesquereux 1883
- 'Potamogetonaceae belongs to Najadales'
- 'Potamogetophyllum belongs to Potamogetonaceae'
- 'Potamogetophyllum vernonensis belongs to Potamogetophyllum'
- 'Potentilla belongs to Rosaceae'
- 'Potentilla anserina belongs to Potentilla'
- 'Pourouma belongs to Moraceae'
- 'Pourouma texana belongs to Pourouma' according to Berry 1916
- 'Pourouma texana belongs to Pourouma'
- 'Praeengelhardtia belongs to Juglandaceae'
- 'Praeengelhardtia eocenica belongs to Praeengelhardtia' according to Berry 1916
- 'Praeengelhardtia eocenica belongs to Praeengelhardtia'
- 'Preissites belongs to Marchantiaceae'
- 'Preissites wardii belongs to Preissites'
- 'Premnophyllum belongs to Dicotyledones'
- 'Premnophyllum trigonum belongs to Premnophyllum'
- 'Prepinus belongs to Abietineae'
- 'Prepinus statenensis belongs to Prepinus'
- 'Prepinus viticetensis belongs to Prepinus'
- 'Primulaceae belongs to Primulales'
- 'Primulales belongs to Dicotyledones'
- 'Prinos belongs to Plantae'
- 'Prinos integrifolius belongs to Prinos' according to Elliott 1850
- 'Prinos integrifolius is recombined as Ilex integrifolia'
- 'Prinos verticillatus is recombined as Ilex verticillata' according to Gray 1856
- 'Prinos verticillatus is recombined as Ilex verticillata'
- 'Proteaceae belongs to Proteales'
- 'Proteaephyllum belongs to Dicotyledones'
- 'Proteaephyllum californicum belongs to Proteaephyllum'
- 'Proteaephyllum dentatum belongs to Proteaephyllum' according to Fontaine 1889
- 'Proteaephyllum dentatum is recombined as Hederaephyllum dentatum' according to Berry 1912
- 'Hederaephyllum dentatum is a subjective synonym of Hederaephyllum crenulatum'
- 'Proteaephyllum ellipticum belongs to Proteaephyllum' according to Fontaine 1889
- 'Proteaephyllum ellipticum is a subjective synonym of Proteaephyllum ovatum'
- 'Proteaephyllum oblongifolium belongs to Proteaephyllum' according to Fontaine 1889
- 'Proteaephyllum oblongifolium is recombined as Ficophyllum oblongifolium' according to Berry 1912
- 'Ficophyllum oblongifolium is a subjective synonym of Ficophyllum crassinerve'
- 'Proteaephyllum orbiculare belongs to Proteaephyllum' according to Fontaine 1889
- 'Proteaephyllum orbiculare is a subjective synonym of Proteaephyllum reniforme'
- 'Proteaephyllum ovatum belongs to Proteaephyllum' according to Fontaine 1889
- 'Proteaephyllum ovatum belongs to Proteaephyllum'
- 'Proteaephyllum reniforme belongs to Proteaephyllum'
- 'Proteaephyllum tenuinerve belongs to Proteaephyllum' according to Fontaine 1889
- 'Proteaephyllum tenuinerve is a subjective synonym of Proteaephyllum ovatum'
- 'Proteaephyllum uhleri belongs to Proteaephyllum' according to Fontaine 1905
- 'Proteaephyllum uhleri is a subjective synonym of Celastrophyllum latifolium'
- 'Proteales belongs to Dicotyledones'
- 'Proteoides belongs to Proteaceae'
- 'Proteoides acuta belongs to Proteoides' according to Heer 1866
- 'Proteoides acuta belongs to Proteoides'
- 'Proteoides conospermaefolia belongs to Proteoides' according to Berry 1919
- 'Proteoides conospermaefolia belongs to Proteoides'
- 'Proteoides crassipes is recombined as Ficus crassipes'
- 'Proteoides crassipes belongs to Proteoides' according to Heer 1874
- 'Proteoides crassipes is recombined as Ficus crassipes' according to Heer 1882
- 'Proteoides daphnogenoides belongs to Proteoides' according to Heer 1866
- 'Proteoides daphnogenoides is recombined as Ficus daphnogenoides' according to Berry 1905
- 'Proteoides daphnogenoides is recombined as Ficus daphnogenoides'
- 'Proteoides grevilliaeformis [misspelled as Proteoides grevilleaeformis] belongs to Proteoides'
- 'Proteoides lancifolius belongs to Proteoides'
- 'Proteoides longus is recombined as Myrica longa' according to Heer 1883
- 'Proteoides longus is recombined as Myrica longa'
- 'Proteoides longus belongs to Proteoides' according to Heer 1874
- 'Proteoides major belongs to Proteoides'
- 'Proteoides major belongs to Proteoides' according to Dawson 1893
- 'Proteoides neillii belongs to Proteoides' according to Dawson 1893
- 'Proteoides neillii belongs to Proteoides'
- 'Proteoides parvula belongs to Proteoides'
- 'Proteoides wilcoxensis belongs to Proteoides' according to Berry 1916
- 'Proteoides wilcoxensis belongs to Proteoides'
- 'Protodammara belongs to Araucariaceae'
- 'Protodammara speciosa belongs to Protodammara'
- 'Protoficus belongs to Moraceae'
- 'Protoficus fossi belongs to Protoficus' according to Duror 1916
- 'Protoficus fossi belongs to Protoficus'
- 'Protoficus inaequalis belongs to Protoficus' according to Newberry 1882
- 'Protoficus inaequalis belongs to Protoficus'
- 'Protoficus zeilleri belongs to Protoficus' according to Lesquereux 1888
- 'Protoficus zeilleri belongs to Protoficus'
- 'Protophyllocladus belongs to Taxeae'
- 'Protophyllocladus lobatus belongs to Protophyllocladus'
- 'Protophyllum belongs to Platanaceae'
- 'Protophyllum boreale belongs to Protophyllum' according to Dawson 1882
- 'Protophyllum boreale belongs to Protophyllum'
- 'Protophyllum crassum belongs to Protophyllum'
- 'Protophyllum crassum belongs to Protophyllum' according to Lesquereux 1891
- 'Protophyllum crednerioides belongs to Protophyllum' according to Lesquereux 1874
- 'Protophyllum crednerioides belongs to Protophyllum'
- 'Protophyllum crenatum belongs to Protophyllum' according to Knowlton 1891
- 'Protophyllum crenatum belongs to Protophyllum'
- 'Protophyllum denticulatum belongs to Protophyllum'
- 'Protophyllum dimorphum belongs to Protophyllum' according to Lesquereux 1891
- 'Protophyllum dimorphum belongs to Protophyllum'
- 'Protophyllum integerrimum belongs to Protophyllum' according to Lesquereux 1891
- 'Protophyllum integerrimum belongs to Protophyllum'
- 'Protophyllum minus belongs to Protophyllum' according to Lesquereux 1874
- 'Protophyllum minus belongs to Protophyllum'
- 'Protophyllum nanaimo belongs to Protophyllum' according to Dawson 1882
- 'Protophyllum nanaimo belongs to Protophyllum'
- 'Protophyllum nebrascense belongs to Protophyllum' according to Lesquereux 1874
- 'Protophyllum nebrascense belongs to Protophyllum'
- 'Protophyllum obovatum belongs to Protophyllum' according to Newberry 1895
- 'Protophyllum obovatum belongs to Protophyllum'
- 'Protophyllum praestans belongs to Protophyllum' according to Lesquereux 1891
- 'Protophyllum praestans belongs to Protophyllum'
- 'Protophyllum pseudospermoides belongs to Protophyllum' according to Lesquereux 1891
- 'Protophyllum pseudospermoides belongs to Protophyllum'
- 'Protophyllum pterospermifolium belongs to Protophyllum' according to Lesquereux 1891
- 'Protophyllum pterospermifolium belongs to Protophyllum'
- 'Protophyllum querciforme belongs to Protophyllum' according to Hollick 1895
- 'Protophyllum querciforme belongs to Protophyllum'
- 'Protophyllum undulatum belongs to Protophyllum' according to Lesquereux 1891
- 'Protophyllum undulatum belongs to Protophyllum'
- 'Protorhipis belongs to Dipteridinae'
- 'Protorhipis fisheri belongs to Protorhipis' according to Knowlton 1907
- 'Protorhipis fisheri belongs to Protorhipis'
- 'Pruninium belongs to Drupaceae'
- 'Pruninium gummosum belongs to Pruninium'
- 'Prunoides belongs to Drupaceae'
- 'Prunoides inequalis belongs to Prunoides' according to Perkins 1906
- 'Prunoides inequalis belongs to Prunoides'
- 'Prunoides seelyi belongs to Prunoides' according to Perkins 1904
- 'Prunoides seelyi belongs to Prunoides'
- 'Prunus belongs to Drupaceae'
- 'Prunus acutifolia belongs to Prunus' according to Newberry 1895
- 'Prunus acutifolia belongs to Prunus'
- 'Prunus antecedens belongs to Prunus' according to Lesquereux 1891
- 'Prunus antecedens belongs to Prunus'
- 'Prunus coloradensis belongs to Prunus' according to Knowlton 1918
- 'Prunus coloradensis belongs to Prunus'
- 'Prunus cretacea belongs to Prunus'
- 'Prunus cretacea belongs to Prunus' according to Lesquereux 1868
- 'Prunus dakotensis belongs to Prunus' according to Lesquereux 1883
- 'Prunus dakotensis belongs to Prunus'
- 'Prunus merriami belongs to Prunus' according to Knowlton 1902
- 'Prunus merriami belongs to Prunus'
- 'Prunus nabortensis belongs to Prunus' according to Berry 1916
- 'Prunus nabortensis belongs to Prunus'
- 'Prunus tufacea belongs to Prunus' according to Knowlton 1902
- 'Prunus tufacea belongs to Prunus'
- 'Prunus variabilis belongs to Prunus' according to Newberry 1882
- 'Prunus variabilis belongs to Prunus'
- 'Pseudodanaeopsis belongs to Pteridophyta'
- 'Pseudodanaeopsis nervosa belongs to Pseudodanaeopsis' according to Fontaine 1883
- 'Pseudodanaeopsis nervosa is a subjective synonym of Pseudodanaeopsis obliqua'
- 'Pseudodanaeopsis reticulata is a subjective synonym of Pseudodanaeopsis plana'
- 'Pseudogeinitzia belongs to Taxodieae'
- 'Pseudogeinitzia sequoiiformis belongs to Pseudogeinitzia'
- 'Pseudolmedia belongs to Moraceae'
- 'Pseudolmedia eocenica belongs to Pseudolmedia' according to Berry 1916
- 'Pseudolmedia eocenica belongs to Pseudolmedia'
- 'Pseudotsuga belongs to Abietineae'
- 'Pseudotsuga macrocarpa belongs to Pseudotsuga' according to Mayr 1890
- 'Pseudotsuga macrocarpa belongs to Pseudotsuga'
- 'Pseudotsuga miocena belongs to Pseudotsuga' according to Penhallow 1903
- 'Pseudotsuga miocena belongs to Pseudotsuga'
- 'Psilotaceae belongs to Lycopodiales'
- 'Psilotum belongs to Plantae'
- 'Psilotum inerme belongs to Psilotum' according to Newberry 1868
- 'Psilotum inerme is recombined as Cabomba inermis' according to Hollick 1898
- 'Psilotum inerme is recombined as Cabomba inermis'
- 'Psoralea belongs to Papilionaceae'
- 'Psoralea physodes belongs to Psoralea'
- 'Psoralea physodes belongs to Psoralea' according to Douglas 1831
- 'Psychotria belongs to Rubiaceae'
- 'Psychotria grandifolia belongs to Psychotria' according to Engelhardt 1891
- 'Psychotria grandifolia belongs to Psychotria'
- 'Ptelea belongs to Rutaceae'
- 'Ptenostrobus belongs to Coniferales'
- 'Ptenostrobus nebrascensis belongs to Ptenostrobus'
- 'Pteridophyta belongs to Plantae'
- 'Pteris belongs to Polypodiaceae'
- 'Osmunda affinis is a subjective synonym of Salpichlaena anceps'
- 'Pteris affinis belongs to Pteris' according to Lesquereux 1873
- 'Pteris affinis is recombined as Osmunda affinis' according to Lesquereux 1878
- 'Pteris anceps belongs to Pteris' according to Lesquereux 1872
- 'Pteris anceps is recombined as Salpichlaena anceps'
- 'Pteris dakotensis belongs to Pteris' according to Lesquereux 1891
- 'Pteris dakotensis belongs to Pteris'
- 'Pteris elegans belongs to Pteris' according to Newberry 1882
- 'Pteris elegans belongs to Pteris'
- 'Pteris gardneri belongs to Pteris' according to Lesquereux 1873
- 'Pteris gardneri is recombined as Gymnogramma gardneri' according to Lesquereux 1878
- 'Pteris gardneri is recombined as Saccoloma gardneri'
- 'Pteris glossopteroides belongs to Pteris'
- 'Pteris glossopteroides belongs to Pteris' according to Dawson 1882
- 'Pteris inquirenda belongs to Pteris' according to Berry 1918
- 'Pteris inquirenda belongs to Pteris'
- 'Pteris linearis belongs to Pteris' according to Knowlton 1918
- 'Pteris linearis belongs to Pteris'
- 'Pteris pseudopinnaeformis belongs to Pteris' according to Lesquereux 1878
- 'Pteris pseudopinnaeformis belongs to Pteris'
- 'Pteris russellii belongs to Pteris' according to Newberry 1882
- 'Pteris russellii belongs to Pteris'
- 'Pteris sitkensis belongs to Pteris' according to Heer 1869
- 'Pteris sitkensis belongs to Pteris'
- 'Pteris subsimplex belongs to Pteris' according to Lesquereux 1873
- 'Pteris subsimplex is a subjective synonym of Allantodiopsis erosa'
- 'Pteris subsimplex is recombined as Asplenium subsimplex' according to Knowlton 1898
- 'Pteris undulata belongs to Pteris' according to Lesquereux 1888
- 'Pteris undulata is a subjective synonym of Allantodiopsis erosa'
- 'Pterocarya belongs to Juglandaceae'
- 'Pterocarya americana belongs to Pterocarya' according to Lesquereux 1873
- 'Pterocarya americana belongs to Pterocarya'
- 'Pterocarya retusa belongs to Pterocarya' according to Lesquereux 1888
- 'Pterophyllum belongs to Cycadaceae'
- 'Pterophyllum abietinum belongs to Pterophyllum' according to Göppert 1816
- 'Pterophyllum abietinum is a subjective synonym of Dioonites buchianus' according to Ward 1905
- 'Pterophyllum abietinum is a subjective synonym of Dioonites buchianus'
- 'Pterophyllum affine belongs to Pterophyllum'
- 'Pterophyllum alaskense belongs to Pterophyllum' according to Fontaine 1905
- 'Pterophyllum alaskense belongs to Pterophyllum'
- 'Pterophyllum braunianum is recombined as Ctenophyllum braunianum'
- 'Pterophyllum buchianum is recombined as Dioonites buchianus'
- 'Pterophyllum buchianum belongs to Pterophyllum' according to Ettingshausen 1852
- 'Pterophyllum buchianum is recombined as Dioonites buchianus' according to Bornemann 1856
- 'Pterophyllum californicum is recombined as Nilsonia californica' according to Fontaine 1905
- 'Pterophyllum californicum is recombined as Nilsonia californica'
- 'Pterophyllum californicum belongs to Pterophyllum' according to Fontaine 1894
- 'Pterophyllum carnallianum belongs to Pterophyllum' according to Göppert 1843
- 'Pterophyllum carnallianum is recombined as Dioonites carnallianus' according to Bornemann 1856
- 'Pterophyllum contiguum belongs to Pterophyllum'
- 'Pterophyllum daleanum belongs to Pterophyllum' according to Ward 1900
- 'Pterophyllum daleanum belongs to Pterophyllum'
- 'Pterophyllum dunkerianum belongs to Pterophyllum' according to Göppert 1843
- 'Pterophyllum dunkerianum is recombined as Dioonites dunkerianus' according to Miquel 1851
- 'Pterophyllum dunkerianum is recombined as Dioonites dunkerianus'
- 'Pterophyllum haydenii belongs to Pterophyllum' according to Lesquereux 1868
- 'Pterophyllum haydenii is recombined as Podozamites haydenii' according to Lesquereux 1883
- 'Pterophyllum haydenii is recombined as Podozamites haydenii'
- 'Pterophyllum inaequale belongs to Pterophyllum' according to Fontaine 1883
- 'Pterophyllum inaequale belongs to Pterophyllum'
- 'Pterophyllum lepidum belongs to Pterophyllum' according to Heer 1874
- 'Pterophyllum lepidum belongs to Pterophyllum'
- 'Pterophyllum lowryanum belongs to Pterophyllum' according to Ward 1905
- 'Pterophyllum lowryanum belongs to Pterophyllum'
- 'Pterophyllum minus belongs to Pterophyllum' according to Brongniart 1825
- 'Pterophyllum minus belongs to Pterophyllum'
- 'Pterophyllum nathorsti belongs to Pterophyllum'
- 'Pterophyllum obovatum belongs to Pterophyllum' according to Newberry 1896
- 'Pterophyllum obovatum is recombined as Pterospermites obovatus' according to Berry 1909
- 'Pterophyllum obovatum is recombined as Pterospermites obovatus'
- 'Pterophyllum princeps belongs to Pterophyllum' according to Oldham and Morris 1862
- 'Pterophyllum princeps is recombined as Anomozamites princeps'
- 'Pterophyllum rajmahalense belongs to Pterophyllum' according to Morris 1863
- 'Pterophyllum rajmahalense belongs to Pterophyllum'
- 'Pterophyllum robustum belongs to Pterophyllum' according to Emmons 1857
- 'Pterophyllum robustum is recombined as Ctenophyllum robustum' according to Fontaine 1883
- 'Pterophyllum trilobatum belongs to Pterophyllum' according to Lesquereux 1875
- 'Pterophyllum trilobatum belongs to Pterophyllum'
- 'Pterospermites belongs to Sterculiaceae'
- 'Pterospermites alaskana belongs to Pterospermites' according to Knowlton 1904
- 'Pterospermites alaskana belongs to Pterospermites'
- 'Pterospermites carolinensis belongs to Pterospermites' according to Berry 1907
- 'Pterospermites carolinensis belongs to Pterospermites'
- 'Pterospermites cordatus belongs to Pterospermites' according to Ward 1885
- 'Pterospermites cordatus belongs to Pterospermites'
- 'Pterospermites credneriifolius belongs to Pterospermites' according to Berry 1907
- 'Pterospermites credneriifolius belongs to Pterospermites'
- 'Pterospermites dentatus belongs to Pterospermites' according to Heer 1868
- 'Pterospermites dentatus belongs to Pterospermites'
- 'Pterospermites grandidentatus belongs to Pterospermites' according to Lesquereux 1888
- 'Pterospermites grandidentatus belongs to Pterospermites'
- 'Pterospermites haguei belongs to Pterospermites'
- 'Pterospermites haydenii belongs to Pterospermites' according to Lesquereux 1871
- 'Pterospermites haydenii is recombined as Protophyllum haydenii' according to Lesquereux 1874
- 'Pterospermites haydenii is recombined as Protophyllum haydenii'
- 'Pterospermites longeacuminatus belongs to Pterospermites' according to Lesquereux 1891
- 'Pterospermites longeacuminatus belongs to Pterospermites'
- 'Pterospermites magnifolia belongs to Pterospermites' according to Knowlton 1904
- 'Pterospermites magnifolia belongs to Pterospermites'
- 'Pterospermites minor belongs to Pterospermites' according to Ward 1885
- 'Pterospermites minor belongs to Pterospermites'
- 'Pterospermites modestus belongs to Pterospermites' according to Lesquereux 1891
- 'Pterospermites modestus belongs to Pterospermites'
- 'Pterospermites multinervis belongs to Pterospermites' according to Lesquereux 1871
- 'Pterospermites multinervis is recombined as Protophyllum multinerve' according to Lesquereux 1874
- 'Pterospermites multinervis is recombined as Protophyllum multinerve'
- 'Pterospermites neomexicanus belongs to Pterospermites' according to Knowlton 1916
- 'Pterospermites neomexicanus belongs to Pterospermites'
- 'Pterospermites nervosus belongs to Pterospermites' according to Knowlton 1918
- 'Pterospermites nervosus belongs to Pterospermites'
- 'Pterospermites quadratus belongs to Pterospermites' according to Lesquereux 1871
- 'Pterospermites quadratus is recombined as Protophyllum quadratum' according to Lesquereux 1874
- 'Pterospermites quadratus is recombined as Protophyllum quadratum'
- 'Pterospermites rugosus belongs to Pterospermites' according to Lesquereux 1872
- 'Pterospermites rugosus is recombined as Protophyllum rugosum' according to Lesquereux 1874
- 'Pterospermites rugosus is recombined as Protophyllum rugosum'
- 'Pterospermites spectabilis belongs to Pterospermites' according to Heer 1869
- 'Pterospermites spectabilis belongs to Pterospermites'
- 'Pterospermites sternbergii belongs to Pterospermites' according to Lesquereux 1872
- 'Pterospermites sternbergii is recombined as Protophyllum sternbergii' according to Lesquereux 1874
- 'Pterospermites sternbergii is recombined as Protophyllum sternbergii'
- 'Pterospermites undulatus belongs to Pterospermites'
- 'Pterospermites undulatus belongs to Pterospermites' according to Knowlton 1900
- 'Pterospermites wardii belongs to Pterospermites' according to Knowlton 1900
- 'Pterospermites wardii belongs to Pterospermites'
- 'Pterospermites whitei belongs to Pterospermites' according to Ward 1885
- 'Pterospermites whitei belongs to Pterospermites'
- 'Pterozamites abbreviatus belongs to Pterozamites' according to Braun 1843
- 'Pterozamites abbreviatus is a subjective synonym of Ctenophyllum braunianum'
- 'Pterozamites decussatus belongs to Pterozamites' according to Emmons 1856
- 'Pterozamites decussatus is recombined as Pterophyllum decussatum' according to Fontaine 1883
- 'Pterophyllum decussatum is a subjective synonym of Ctenophyllum braunianum'
- 'Pterozamites linearis belongs to Pterozamites' according to Emmons 1857
- 'Pterozamites linearis is recombined as Ctenophyllum lineare' according to Fontaine 1883
- 'Pterozamites linearis is recombined as Ctenophyllum lineare'
- 'Pterozamites pectinatus belongs to Pterozamites' according to Emmons 1857
- 'Pterozamites pectinatus is recombined as Pterophyllum pectinatum' according to Fontaine 1883
- 'Pterophyllum pectinatum is replaced by Pterophyllum daleanum'
- 'Pterophyllum spatulatum is a subjective synonym of Ctenophyllum braunianum'
- 'Pterozamites spatulatus belongs to Pterozamites' according to Emmons 1857
- 'Pterozamites spatulatus is recombined as Pterophyllum spatulatum' according to Fontaine 1883
- 'Ptilozamites belongs to Cycadaceae'
- 'Puccinites belongs to Uredinaceae'
- 'Puccinites cretaceum belongs to Puccinites' according to Whitford 1916
- 'Puccinites cretaceum is replaced by Puccinites whitfordi'
- 'Puccinites cretaceus belongs to Puccinites' according to Velenovsky 1889
- 'Puccinites whitfordi belongs to Puccinites'
- 'Pyrus belongs to Pomaceae'
- 'Pyrus cretacea belongs to Pyrus' according to Newberry 1868
- 'Pyrus cretacea belongs to Pyrus'
- 'Quercinium belongs to Fagaceae'
- 'Quercinium abromeiti belongs to Quercinium' according to Platen 1907
- 'Quercinium abromeiti belongs to Quercinium'
- 'Quercinium anomalum belongs to Quercinium' according to Platen 1907
- 'Quercinium anomalum belongs to Quercinium'
- 'Quercinium knowltoni belongs to Quercinium' according to Felix 1896
- 'Quercinium knowltoni belongs to Quercinium'
- 'Quercinium lamarense belongs to Quercinium'
- 'Quercinium lesquereuxi belongs to Quercinium' according to Platen 1907
- 'Quercinium lesquereuxi belongs to Quercinium'
- 'Quercinium solerederi belongs to Quercinium' according to Platen 1907
- 'Quercinium solerederi belongs to Quercinium'
- 'Quercinium wardi belongs to Quercinium' according to Platen 1907
- 'Quercinium wardi belongs to Quercinium'
- 'Quercophyllum belongs to Fagaceae'
- 'Quercophyllum chinkapinense belongs to Quercophyllum' according to Ward 1905
- 'Quercophyllum chinkapinense belongs to Quercophyllum'
- 'Quercophyllum grossedentatum belongs to Quercophyllum'
- 'Quercophyllum tenuinerve belongs to Quercophyllum' according to Fontaine 1889
- 'Quercophyllum tenuinerve is a subjective synonym of Ficophyllum serratum'
- 'Quercophyllum wyomingense belongs to Quercophyllum' according to Fontaine 1899
- 'Quercophyllum wyomingense belongs to Quercophyllum'
- 'Quercus belongs to Fagaceae'
- 'Quercus abnormalis belongs to Quercus' according to Berry 1907
- 'Quercus abnormalis belongs to Quercus'
- 'Quercus acrodon belongs to Quercus' according to Lesquereux 1868
- 'Quercus acrodon is replaced by Quercus lesquereuxiana'
- 'Quercus acrodon belongs to Quercus' according to Massalongo 1853
- 'Quercus acuminata belongs to Quercus' according to Michaux 1895
- 'Quercus acuminata belongs to Quercus'
- 'Quercus aemulans belongs to Quercus' according to Lesquereux 1871
- 'Quercus aemulans belongs to Quercus'
- 'Quercus affinis belongs to Quercus' according to Scheider 1837
- 'Quercus agrifolia belongs to Quercus' according to Née 1801
- 'Quercus agrifolia belongs to Quercus'
- 'Quercus alaskana belongs to Quercus' according to Trelease 1918
- 'Quercus alaskana belongs to Quercus'
- 'Quercus alba belongs to Quercus'
- 'Quercus alnoides belongs to Quercus' according to Lesquereux 1891
- 'Quercus alnoides belongs to Quercus'
- 'Quercus angustiloba belongs to Quercus' according to Braun 1861
- 'Quercus antiqua belongs to Quercus' according to Newberry 1868
- 'Quercus antiqua belongs to Quercus'
- 'Quercus argentum belongs to Quercus' according to Knowlton 1901
- 'Quercus argentum belongs to Quercus'
- 'Quercus balaninorum belongs to Quercus' according to Cockerell 1908
- 'Quercus balaninorum belongs to Quercus'
- 'Quercus banksiaefolia belongs to Quercus' according to Newberry 1863
- 'Quercus banksiaefolia belongs to Quercus'
- 'Quercus baueri belongs to Quercus' according to Knowlton 1916
- 'Quercus baueri belongs to Quercus'
- 'Quercus berryi belongs to Quercus'
- 'Quercus bicornis belongs to Quercus' according to Ward 1885
- 'Quercus bicornis belongs to Quercus'
- 'Quercus boweniana belongs to Quercus'
- 'Quercus brevifolia belongs to Quercus' according to Sargent 1895
- 'Quercus brevifolia belongs to Quercus'
- 'Quercus breweri belongs to Quercus' according to Engelmann 1880
- 'Quercus breweri belongs to Quercus' according to Lesquereux 1883
- 'Quercus breweri is replaced by Quercus berryi'
- 'Quercus carbonensis belongs to Quercus' according to Ward 1885
- 'Quercus carbonensis belongs to Quercus'
- 'Quercus castaneopsis belongs to Quercus' according to Lesquereux 1883
- 'Quercus castaneopsis belongs to Quercus'
- 'Quercus castanoides belongs to Quercus' according to Newberry 1882
- 'Quercus castanoides belongs to Quercus'
- 'Quercus castanopsis belongs to Quercus' according to Newberry 1882
- 'Quercus castanopsis belongs to Quercus'
- 'Quercus catesbaeifolia belongs to Quercus' according to Berry 1916
- 'Quercus catesbaeifolia belongs to Quercus'
- 'Quercus celastrifolia belongs to Quercus' according to Lesquereux 1888
- 'Quercus celastrifolia belongs to Quercus'
- 'Quercus chamissonis belongs to Quercus' according to Heer 1868
- 'Quercus chamissonis belongs to Quercus'
- 'Quercus chapmani belongs to Quercus' according to Sargent 1895
- 'Quercus chapmani belongs to Quercus'
- 'Quercus chapmanifolia belongs to Quercus' according to Berry 1916
- 'Quercus chapmanifolia belongs to Quercus'
- 'Quercus chlorophylloides belongs to Quercus' according to Knowlton 1898
- 'Quercus chlorophylloides is a subjective synonym of Quercus eucalyptifolia'
- 'Quercus chrysolepis belongs to Quercus' according to Liebmann 1854
- 'Quercus chrysolepis belongs to Quercus'
- 'Quercus cinereoides belongs to Quercus' according to Lesquereux 1878
- 'Quercus cinereoides belongs to Quercus'
- 'Quercus clarnensis belongs to Quercus' according to Trelease 1918
- 'Quercus clarnensis belongs to Quercus'
- 'Quercus cleburni belongs to Quercus' according to Lesquereux 1873
- 'Quercus cleburni is recombined as Dryandroides cleburni' according to Ettingshausen 1873
- 'Quercus cleburni is recombined as Dryandroides cleburni'
- 'Quercus cockerelli belongs to Quercus' according to Trelease 1918
- 'Quercus cockerelli is an objective synonym of Quercus hatcheri'
- 'Quercus coloradensis belongs to Quercus' according to Lesquereux 1888
- 'Quercus coloradensis belongs to Quercus'
- 'Quercus competens belongs to Quercus' according to Lesquereux 1875
- 'Quercus competens belongs to Quercus'
- 'Quercus consimilis belongs to Quercus'
- 'Quercus convexa belongs to Quercus'
- 'Quercus coriacea belongs to Quercus' according to Newberry 1863
- 'Quercus coriacea belongs to Quercus'
- 'Quercus crossii belongs to Quercus' according to Lesquereux 1887
- 'Quercus crossii belongs to Quercus'
- 'Quercus culveri belongs to Quercus'
- 'Quercus cuneata belongs to Quercus' according to Newberry 1868
- 'Quercus cuneata is replaced by Quercus newberryi'
- 'Quercus cuneata belongs to Quercus' according to Wangenheim 1820
- 'Quercus dakotensis belongs to Quercus' according to Lesquereux 1883
- 'Quercus dakotensis belongs to Quercus'
- 'Quercus dallii belongs to Quercus' according to Lesquereux 1882
- 'Quercus dallii belongs to Quercus'
- 'Quercus dawsoni belongs to Quercus' according to Knowlton 1898
- 'Quercus dawsoni belongs to Quercus'
- 'Quercus dayana belongs to Quercus' according to Knowlton 1902
- 'Quercus dayana belongs to Quercus'
- 'Quercus densiflora belongs to Quercus' according to Hooker and Arnott 1840
- 'Quercus densiflora is recombined as Pasania densiflora' according to Oersted 1866
- 'Quercus densiflora is recombined as Pasania densiflora'
- 'Quercus dentoni belongs to Quercus' according to Lesquereux 1883
- 'Quercus dentoni belongs to Quercus'
- 'Quercus dentonoides belongs to Quercus' according to Knowlton 1900
- 'Quercus dentonoides belongs to Quercus'
- 'Quercus digitata belongs to Quercus' according to Sudworth 1892
- 'Quercus digitata belongs to Quercus'
- 'Quercus distincta belongs to Quercus'
- 'Quercus doljensis belongs to Quercus' according to Pilar 1883
- 'Quercus doljensis belongs to Quercus'
- 'Quercus drymeja belongs to Quercus' according to Unger 1847
- 'Quercus drymeja belongs to Quercus'
- 'Quercus dryophyllopsis belongs to Quercus' according to Trelease 1918
- 'Quercus dryophyllopsis belongs to Quercus'
- 'Quercus dubia belongs to Quercus' according to Newberry 1882
- 'Quercus dubia belongs to Quercus'
- 'Quercus duriuscula belongs to Quercus' according to Knowlton 1902
- 'Quercus duriuscula belongs to Quercus'
- 'Quercus eamesi belongs to Quercus'
- 'Quercus eamesi belongs to Quercus' according to Trelease 1918
- 'Quercus elaena belongs to Quercus' according to Unger 1847
- 'Quercus elaena belongs to Quercus'
- 'Quercus elaenoides belongs to Quercus'
- 'Quercus elkoana belongs to Quercus' according to Lesquereux 1873
- 'Quercus elkoana is recombined as Carpinus elkoana' according to Cockerell 1906
- 'Quercus elkoana is recombined as Carpinus elkoana'
- 'Quercus elliptica belongs to Quercus' according to Newberry 1863
- 'Quercus elliptica is replaced by Quercus washingtonensis'
- 'Quercus elliptica belongs to Quercus' according to Liebmann 1864
- 'Quercus ellisiana belongs to Quercus' according to Lesquereux 1871
- 'Quercus ellisiana belongs to Quercus'
- 'Quercus ellsworthianus belongs to Quercus'
- 'Quercus ellsworthianus is recombined as Laurophyllum ellsworthianum' according to Lesquereux 1891
- 'Quercus ellsworthianus belongs to Quercus' according to Lesquereux 1868
- 'Quercus eoprinoides belongs to Quercus' according to Berry 1904
- 'Quercus eoprinoides belongs to Quercus'
- 'Quercus eucalyptifolia belongs to Quercus' according to Ettingshausen 1883
- 'Quercus eucalyptifolia belongs to Quercus'
- 'Quercus evansii belongs to Quercus' according to Lesquereux 1859
- 'Quercus evansii belongs to Quercus'
- 'Quercus fisheriana belongs to Quercus' according to Knowlton 1918
- 'Quercus fisheriana belongs to Quercus'
- 'Quercus flexuosa belongs to Quercus' according to Newberry 1863
- 'Quercus flexuosa belongs to Quercus'
- 'Quercus florissantensis belongs to Quercus' according to Cockerell 1908
- 'Quercus florissantensis belongs to Quercus'
- 'Quercus fraxinifolia belongs to Quercus' according to Lesquereux 1878
- 'Quercus fraxinifolia belongs to Quercus'
- 'Quercus furcinervis belongs to Quercus' according to Rossmässler 1883
- 'Quercus furcinervis belongs to Quercus'
- 'Quercus furuhjelmi belongs to Quercus' according to Heer 1868
- 'Quercus furuhjelmi belongs to Quercus'
- 'Quercus gardneri belongs to Quercus' according to Knowlton 1918
- 'Quercus gardneri belongs to Quercus'
- 'Quercus gaudini belongs to Quercus' according to Lesquereux 1859
- 'Quercus gaudini belongs to Quercus'
- 'Quercus glascoena belongs to Quercus' according to Lesquereux 1891
- 'Quercus glascoena belongs to Quercus'
- 'Quercus glennii belongs to Quercus' according to Hollick 1906
- 'Quercus glennii belongs to Quercus'
- 'Quercus godeti belongs to Quercus' according to Heer 1856
- 'Quercus godeti belongs to Quercus'
- 'Quercus goepperti belongs to Quercus'
- 'Quercus goldianus belongs to Quercus' according to Lesquereux 1873
- 'Quercus goldianus belongs to Quercus'
- 'Quercus gracilis belongs to Quercus' according to Newberry 1882
- 'Quercus gracilis is a subjective synonym of Dryophyllum subfalcatum'
- 'Quercus groenlandica belongs to Quercus'
- 'Quercus grossidentata belongs to Quercus'
- 'Quercus haidingeri belongs to Quercus' according to Ettingshausen 1851
- 'Quercus haidingeri belongs to Quercus'
- 'Quercus hatcheri belongs to Quercus' according to Knowlton 1906
- 'Quercus hatcheri belongs to Quercus'
- 'Quercus haydeni belongs to Quercus' according to Lesquereux 1869
- 'Quercus haydeni belongs to Quercus'
- 'Quercus hesperia belongs to Quercus'
- 'Quercus hexagona belongs to Quercus' according to Lesquereux 1868
- 'Quercus hexagona belongs to Quercus'
- 'Quercus hieracifolia belongs to Quercus' according to Debey 1880
- 'Quercus hieracifolia belongs to Quercus'
- 'Quercus hollickii belongs to Quercus' according to Berry 1903
- 'Quercus hollickii belongs to Quercus'
- 'Quercus holmesii belongs to Quercus' according to Lesquereux 1883
- 'Quercus holmesii belongs to Quercus'
- 'Quercus horniana belongs to Quercus' according to Lesquereux 1888
- 'Quercus hosiana belongs to Quercus' according to Lesquereux 1891
- 'Quercus hosiana belongs to Quercus'
- 'Quercus idahoensis belongs to Quercus' according to Knowlton 1898
- 'Quercus idahoensis belongs to Quercus'
- 'Quercus imbricaria belongs to Quercus' according to Michaux 1801
- 'Quercus imbricaria belongs to Quercus'
- 'Quercus johnstrupi belongs to Quercus'
- 'Quercus johnstrupi belongs to Quercus' according to Heer 1883
- 'Quercus judithae belongs to Quercus' according to Knowlton 1905
- 'Quercus judithae belongs to Quercus'
- 'Quercus knowltoniana belongs to Quercus' according to Cockerell 1908
- 'Quercus knowltoniana belongs to Quercus'
- 'Quercus lambertensis belongs to Quercus' according to Berry 1916
- 'Quercus lambertensis belongs to Quercus'
- 'Quercus laurifolia belongs to Quercus' according to Michaux 1801
- 'Quercus laurifolia belongs to Quercus' according to Newberry 1883
- 'Quercus laurifolia belongs to Quercus'
- 'Quercus laurifolia is replaced by Quercus penhallowi'
- 'Quercus lehmani belongs to Quercus'
- 'Quercus lehmani belongs to Quercus' according to Hollick 1904
- 'Quercus lesquereuxiana belongs to Quercus' according to Knowlton 1898
- 'Quercus lesquereuxiana belongs to Quercus'
- 'Quercus lonchitis belongs to Quercus' according to Unger 1850
- 'Quercus lonchitis belongs to Quercus'
- 'Quercus lyrata belongs to Quercus' according to Walter 1788
- 'Quercus lyrata belongs to Quercus'
- 'Quercus lyratiformis belongs to Quercus' according to Cockerell 1908
- 'Quercus lyratiformis belongs to Quercus'
- 'Quercus macrocarpa belongs to Quercus' according to Michaux 1801
- 'Quercus macrocarpa belongs to Quercus'
- 'Quercus magnifolia belongs to Quercus'
- 'Quercus marylandica belongs to Quercus'
- 'Quercus marylandica belongs to Quercus' according to Du Roi 1772
- 'Quercus merriami belongs to Quercus' according to Knowlton 1902
- 'Quercus michauxii belongs to Quercus' according to Nuttall 1818
- 'Quercus michauxii belongs to Quercus'
- 'Quercus microdentata belongs to Quercus' according to Hollick 1899
- 'Quercus microdentata is recombined as Dillenites microdentatus' according to Berry 1916
- 'Quercus microdentata is recombined as Dillenites microdentatus'
- 'Quercus milleri belongs to Quercus' according to Berry 1909
- 'Quercus milleri belongs to Quercus'
- 'Quercus minor belongs to Quercus' according to Marshall 1889
- 'Quercus minor belongs to Quercus'
- 'Quercus montana belongs to Quercus' according to Knowlton 1905
- 'Quercus montana is replaced by Quercus hatcheri'
- 'Quercus montana belongs to Quercus' according to Willdenow 1801
- 'Quercus montanensis belongs to Quercus' according to Knowlton 1900
- 'Quercus montanensis belongs to Quercus'
- 'Quercus moorii is recombined as Dryophyllum moorii' according to Berry 1916
- 'Quercus moorii is recombined as Dryophyllum moorii'
- 'Quercus moorii belongs to Quercus' according to Lesquereux 1869
- 'Quercus morrisoniana belongs to Quercus' according to Lesquereux 1883
- 'Quercus morrisoniana belongs to Quercus'
- 'Quercus mudgii belongs to Quercus' according to Lesquereux 1871
- 'Quercus mudgii is recombined as Protophyllum mudgii' according to Lesquereux 1874
- 'Quercus mudgii is recombined as Protophyllum mudgii'
- 'Quercus multinervis belongs to Quercus' according to Lesquereux 1859
- 'Quercus multinervis belongs to Quercus'
- 'Quercus negundoides belongs to Quercus' according to Lesquereux 1871
- 'Quercus negundoides belongs to Quercus'
- 'Quercus neomexicana belongs to Quercus' according to Knowlton 1918
- 'Quercus neomexicana belongs to Quercus'
- 'Quercus nevadensis belongs to Quercus'
- 'Quercus newberryi belongs to Quercus' according to Trelease 1918
- 'Quercus newberryi belongs to Quercus'
- 'Quercus nigra belongs to Quercus'
- 'Quercus novaecaesareae belongs to Quercus' according to Hollick 1897
- 'Quercus novaecaesareae belongs to Quercus'
- 'Quercus olafseni belongs to Quercus'
- 'Quercus olafseni belongs to Quercus' according to Heer 1868
- 'Quercus oregoniana belongs to Quercus' according to Knowlton 1902
- 'Quercus oregoniana belongs to Quercus'
- 'Quercus osbornii belongs to Quercus' according to Lesquereux 1883
- 'Quercus osbornii belongs to Quercus'
- 'Quercus palustris belongs to Quercus' according to Münchhausen 1770
- 'Quercus palustris belongs to Quercus'
- 'Quercus pandurata belongs to Quercus' according to Heer 1868
- 'Quercus pandurata is replaced by Quercus alaskana'
- 'Quercus pandurata belongs to Quercus' according to Humboldt and Bonpland 1813
- 'Quercus paucidentata belongs to Quercus' according to Newberry 1882
- 'Quercus paucidentata belongs to Quercus'
- 'Quercus payettensis belongs to Quercus' according to Knowlton 1898
- 'Quercus payettensis belongs to Quercus'
- 'Quercus pealei belongs to Quercus' according to Lesquereux 1871
- 'Quercus pealei is a subjective synonym of Quercus ellisiana'
- 'Quercus penhallowi belongs to Quercus' according to Trelease 1918
- 'Quercus penhallowi belongs to Quercus'
- 'Quercus peritula belongs to Quercus'
- 'Quercus peritula belongs to Quercus' according to Cockerell 1908
- 'Quercus phellos belongs to Quercus'
- 'Quercus platanoides belongs to Quercus' according to Lamarck 1893
- 'Quercus platanoides belongs to Quercus'
- 'Quercus platinervis belongs to Quercus' according to Lesquereux 1859
- 'Quercus platinervis belongs to Quercus'
- 'Quercus poranoides belongs to Quercus' according to Lesquereux 1874
- 'Quercus poranoides belongs to Quercus'
- 'Quercus praedumosa belongs to Quercus' according to Trelease 1918
- 'Quercus praedumosa belongs to Quercus'
- 'Quercus praeundulata belongs to Quercus' according to Trelease 1918
- 'Quercus praeundulata belongs to Quercus'
- 'Quercus pratti belongs to Quercus' according to Berry 1907
- 'Quercus pratti belongs to Quercus'
- 'Quercus predigitata belongs to Quercus' according to Berry 1907
- 'Quercus predigitata belongs to Quercus'
- 'Quercus previrginiana belongs to Quercus' according to Berry 1916
- 'Quercus previrginiana belongs to Quercus'
- 'Quercus primordialis belongs to Quercus' according to Lesquereux 1868
- 'Quercus primordialis belongs to Quercus'
- 'Quercus prinoides belongs to Quercus' according to Willdenow 1801
- 'Quercus prinoides belongs to Quercus'
- 'Quercus prinus belongs to Quercus'
- 'Quercus pseudoalba belongs to Quercus' according to Hollick 1906
- 'Quercus pseudoalba belongs to Quercus'
- 'Quercus pseudoalnus belongs to Quercus' according to Ettingshausen 1852
- 'Quercus pseudoalnus belongs to Quercus'
- 'Quercus pseudocastanea belongs to Quercus' according to Göppert 1853
- 'Quercus pseudocastanea belongs to Quercus'
- 'Quercus pseudochrysophylla belongs to Quercus' according to Lesquereux 1878
- 'Quercus pseudochrysophylla belongs to Quercus'
- 'Quercus pseudolyrata belongs to Quercus'
- 'Quercus pseudolyrata angustiloba belongs to Quercus pseudolyrata' according to Lesquereux 1888
- 'Quercus pseudolyrata angustiloba is replaced by Quercus merriami'
- 'Quercus pseudowestfalica belongs to Quercus'
- 'Quercus pyrifolia belongs to Quercus' according to Lesquereux 1883
- 'Quercus pyrifolia is a subjective synonym of Quercus florissantensis'
- 'Quercus ramaleyi belongs to Quercus' according to Cockerell 1906
- 'Quercus ramaleyi belongs to Quercus'
- 'Quercus raritanensis belongs to Quercus' according to Berry 1909
- 'Quercus raritanensis belongs to Quercus'
- 'Quercus ratonensis belongs to Quercus' according to Knowlton 1918
- 'Quercus ratonensis belongs to Quercus'
- 'Quercus rhamnoides belongs to Quercus' according to Lesquereux 1891
- 'Quercus rhamnoides belongs to Quercus'
- 'Quercus rockvalensis belongs to Quercus' according to Knowlton 1918
- 'Quercus rockvalensis belongs to Quercus'
- 'Quercus rubra belongs to Quercus'
- 'Quercus saffordi is recombined as Banksia saffordi' according to Berry 1916
- 'Quercus saffordi is recombined as Banksia saffordi'
- 'Quercus saffordi belongs to Quercus' according to Lesquereux 1859
- 'Quercus salicifolia belongs to Quercus' according to Newberry 1868
- 'Quercus salicifolia is replaced by Quercus eamesi'
- 'Quercus salicifolia belongs to Quercus' according to Née 1801
- 'Quercus scudderi belongs to Quercus' according to Knowlton 1916
- 'Quercus scudderi belongs to Quercus'
- 'Quercus semialatus is recombined as Anisophyllum semialatum'
- 'Quercus semialatus belongs to Quercus' according to Lesquereux 1868
- 'Quercus serra belongs to Quercus' according to Unger 1847
- 'Quercus serra belongs to Quercus'
- 'Quercus severnensis belongs to Quercus' according to Berry 1910
- 'Quercus severnensis belongs to Quercus'
- 'Quercus simplex belongs to Quercus' according to Newberry 1882
- 'Quercus simplex belongs to Quercus'
- 'Quercus simulata belongs to Quercus' according to Knowlton 1898
- 'Quercus simulata belongs to Quercus'
- 'Quercus sinuata belongs to Quercus' according to Walter 1788
- 'Quercus sinuata belongs to Quercus' according to Newberry 1868
- 'Quercus sinuata is replaced by Quercus praeundulata'
- 'Quercus spurioilex belongs to Quercus' according to Knowlton 1891
- 'Quercus spurioilex belongs to Quercus'
- 'Quercus stantoni belongs to Quercus' according to Knowlton 1917
- 'Quercus stantoni belongs to Quercus'
- 'Quercus steenstrupiana belongs to Quercus' according to Heer 1868
- 'Quercus steenstrupiana belongs to Quercus'
- 'Quercus stramineus belongs to Quercus' according to Lesquereux 1872
- 'Quercus stramineus belongs to Quercus'
- 'Quercus sullyi belongs to Quercus'
- 'Quercus sumterensis belongs to Quercus'
- 'Quercus suspecta belongs to Quercus' according to Lesquereux 1891
- 'Quercus suspecta belongs to Quercus'
- 'Quercus transgressus belongs to Quercus' according to Lesquereux 1878
- 'Quercus transgressus belongs to Quercus'
- 'Quercus turneri is replaced by Quercus praedumosa'
- 'Quercus turneri belongs to Quercus' according to Willdenow 1809
- 'Quercus ursina belongs to Quercus' according to Knowlton 1902
- 'Quercus ursina belongs to Quercus'
- 'Quercus valdensis belongs to Quercus' according to Heer 1856
- 'Quercus valdensis belongs to Quercus'
- 'Quercus vancouveriana belongs to Quercus' according to Trelease 1918
- 'Quercus vancouveriana belongs to Quercus'
- 'Quercus velutina belongs to Quercus' according to Lamarck 1785
- 'Quercus velutina belongs to Quercus'
- 'Quercus viburnifolia belongs to Quercus' according to Lesquereux 1878
- 'Quercus viburnifolia belongs to Quercus'
- 'Quercus victoriae belongs to Quercus' according to Dawson 1882
- 'Quercus victoriae belongs to Quercus'
- 'Quercus virginiana belongs to Quercus' according to Miller 1768
- 'Quercus virginiana belongs to Quercus'
- 'Quercus voyana is a subjective synonym of Quercus distincta'
- 'Quercus wardiana belongs to Quercus' according to Lesquereux 1891
- 'Quercus wardiana belongs to Quercus'
- 'Quercus washingtonensis belongs to Quercus'
- 'Quercus washingtonensis belongs to Quercus' according to Trelease 1918
- 'Quercus weedii belongs to Quercus'
- 'Quercus whitei belongs to Quercus' according to Lesquereux 1888
- 'Quercus whitei belongs to Quercus'
- 'Quercus wyomingiana belongs to Quercus' according to Lesquereux 1872
- 'Quercus wyomingiana belongs to Quercus'
- 'Quercus yanceyi belongs to Quercus'
- 'Ramulus rugosus belongs to Ramulus'
- 'Ranales belongs to Dicotyledones'
- 'Ranunculaceae belongs to Ranales'
- 'Raritania belongs to Coniferales'
- 'Retiphycus belongs to Algae'
- 'Retiphycus hexagonale belongs to Retiphycus'
- 'Reynosia belongs to Rhamnaceae'
- 'Reynosia praenuntia belongs to Reynosia'
- 'Reynosia praenuntia belongs to Reynosia' according to Berry 1916
- 'Reynosia texana belongs to Reynosia' according to Penhallow 1907
- 'Reynosia texana belongs to Reynosia'
- 'Reynosia wilcoxiana belongs to Reynosia' according to Berry 1916
- 'Reynosia wilcoxiana belongs to Reynosia'
- 'Rhamnaceae belongs to Rhamnales'
- 'Rhamnacinium belongs to Rhamnaceae'
- 'Rhamnacinium porcupinianum belongs to Rhamnacinium' according to Penhallow 1903
- 'Rhamnacinium porcupinianum belongs to Rhamnacinium'
- 'Rhamnacinium radiatum belongs to Rhamnacinium' according to Felix 1896
- 'Rhamnacinium radiatum belongs to Rhamnacinium'
- 'Rhamnacinium texanum belongs to Rhamnacinium' according to Penhallow 1907
- 'Rhamnacinium texanum belongs to Rhamnacinium'
- 'Rhamnacinium triseriatum belongs to Rhamnacinium' according to Penhallow 1903
- 'Rhamnacinium triseriatum belongs to Rhamnacinium'
- 'Rhamnales belongs to Dicotyledones'
- 'Rhamnites belongs to Rhamnaceae'
- 'Rhamnites apiculatus belongs to Rhamnites' according to Lesquereux 1891
- 'Rhamnites apiculatus belongs to Rhamnites'
- 'Rhamnites berchemiaformis belongs to Rhamnites'
- 'Rhamnites berchemiaformis belongs to Rhamnites' according to Berry 1916
- 'Rhamnites concinnus belongs to Rhamnites' according to Newberry 1868
- 'Rhamnites concinnus belongs to Rhamnites'
- 'Rhamnites minor belongs to Rhamnites' according to Hollick 1895
- 'Rhamnites minor belongs to Rhamnites'
- 'Rhamnus belongs to Rhamnaceae'
- 'Rhamnus acuminatifolius belongs to Rhamnus' according to Weber 1872
- 'Rhamnus acuminatifolius belongs to Rhamnus'
- 'Rhamnus acuta belongs to Rhamnus' according to Heer 1882
- 'Rhamnus acuta belongs to Rhamnus'
- 'Rhamnus alaternoides belongs to Rhamnus' according to Heer 1859
- 'Rhamnus alaternoides belongs to Rhamnus'
- 'Rhamnus belmontensis belongs to Rhamnus' according to Knowlton and Cockerell 1919
- 'Rhamnus californica belongs to Rhamnus'
- 'Rhamnus californica belongs to Rhamnus' according to Eschscholtz 1849
- 'Rhamnus cleburni belongs to Rhamnus' according to Lesquereux 1872
- 'Rhamnus cleburni belongs to Rhamnus'
- 'Rhamnus coushatta belongs to Rhamnus' according to Berry 1916
- 'Rhamnus coushatta belongs to Rhamnus'
- 'Rhamnus crenatulus belongs to Rhamnus' according to Knowlton and Cockerell 1919
- 'Rhamnus crenatus belongs to Rhamnus' according to Lesquereux 1888
- 'Rhamnus crenatus is replaced by Rhamnus crenatulus'
- 'Rhamnus crenatus belongs to Rhamnus' according to Sieboldt and Zuccarini 1843
- 'Rhamnus dechenii belongs to Rhamnus' according to Weber 1852
- 'Rhamnus dechenii belongs to Rhamnus'
- 'Rhamnus deformatus belongs to Rhamnus' according to Lesquereux 1883
- 'Rhamnus deformatus belongs to Rhamnus'
- 'Rhamnus deletus belongs to Rhamnus' according to Heer 1871
- 'Rhamnus deletus belongs to Rhamnus'
- 'Rhamnus discolor belongs to Rhamnus' according to Lesquereux 1872
- 'Rhamnus discolor is recombined as Apeibopsis discolor'
- 'Rhamnus elegans belongs to Rhamnus' according to Newberry 1868
- 'Rhamnus elegans is replaced by Rhamnus belmontensis'
- 'Rhamnus elegans belongs to Rhamnus' according to Humboldt et al. 1825
- 'Rhamnus eoligniticus belongs to Rhamnus'
- 'Rhamnus eoligniticus belongs to Rhamnus' according to Berry 1916
- 'Rhamnus eorectinervis belongs to Rhamnus'
- 'Rhamnus eridani belongs to Rhamnus' according to Unger 1850
- 'Rhamnus eridani belongs to Rhamnus'
- 'Rhamnus fischeri belongs to Rhamnus' according to Lesquereux 1871
- 'Rhamnus fischeri belongs to Rhamnus'
- 'Rhamnus florissantensis belongs to Rhamnus' according to Cockerell 1908
- 'Rhamnus florissantensis belongs to Rhamnus'
- 'Rhamnus gaudini belongs to Rhamnus' according to Heer 1859
- 'Rhamnus gaudini belongs to Rhamnus'
- 'Rhamnus goldianus belongs to Rhamnus' according to Lesquereux 1872
- 'Rhamnus goldianus belongs to Rhamnus'
- 'Rhamnus inaequalis is a subjective synonym of Diospyros brachysepala'
- 'Rhamnus inaequalis belongs to Rhamnus' according to Lesquereux 1873
- 'Rhamnus inaequilateralis belongs to Rhamnus' according to Lesquereux 1892
- 'Rhamnus inaequilateralis belongs to Rhamnus'
- 'Rhamnus intermedius belongs to Rhamnus' according to Lesquereux 1871
- 'Rhamnus intermedius is replaced by Rhamnus washakiensis'
- 'Rhamnus intermedius belongs to Rhamnus' according to Steudel and Hochstetter 1827
- 'Rhamnus kansensis belongs to Rhamnus' according to Knowlton and Cockerell 1919
- 'Rhamnus kirchneri belongs to Rhamnus' according to Cockerell 1906
- 'Rhamnus kirchneri belongs to Rhamnus'
- 'Rhamnus lesquereuxi belongs to Rhamnus' according to Berry 1918
- 'Rhamnus lesquereuxi belongs to Rhamnus'
- 'Rhamnus marginatus belongs to Rhamnus' according to Lesquereux 1860
- 'Rhamnus marginatus belongs to Rhamnus'
- 'Rhamnus meriani belongs to Rhamnus' according to Heer 1873
- 'Rhamnus meriani belongs to Rhamnus'
- 'Rhamnus mudgei belongs to Rhamnus' according to Lesquereux 1891
- 'Rhamnus mudgei belongs to Rhamnus'
- 'Rhamnus newberryi belongs to Rhamnus' according to Knowlton and Cockerell 1919
- 'Rhamnus novaecaesareae belongs to Rhamnus' according to Berry 1903
- 'Rhamnus novaecaesareae belongs to Rhamnus'
- 'Rhamnus obovatus belongs to Rhamnus' according to Lesquereux 1868
- 'Rhamnus obovatus belongs to Rhamnus'
- 'Rhamnus oleaefolius belongs to Rhamnus' according to Lesquereux 1883
- 'Rhamnus oleaefolius is replaced by Rhamnus florissantensis'
- 'Rhamnus parvifolia belongs to Rhamnus' according to Bunge 1835
- 'Rhamnus parvifolius belongs to Rhamnus' according to Newberry 1882
- 'Rhamnus parvifolius is replaced by Rhamnus newberryi'
- 'Rhamnus prunifolius belongs to Rhamnus' according to Lesquereux 1883
- 'Rhamnus prunifolius is replaced by Rhamnus kansensis'
- 'Rhamnus prunifolius belongs to Rhamnus' according to Sieber 1841
- 'Rhamnus purshiana belongs to Rhamnus' according to De Candolle 1860
- 'Rhamnus purshiana belongs to Rhamnus'
- 'Rhamnus puryearensis belongs to Rhamnus' according to Berry 1916
- 'Rhamnus puryearensis belongs to Rhamnus'
- 'Rhamnus quilchensis belongs to Rhamnus' according to Penhallow 1908
- 'Rhamnus quilchensis belongs to Rhamnus'
- 'Rhamnus rectinervis belongs to Rhamnus' according to Heer 1859
- 'Rhamnus rectinervis belongs to Rhamnus'
- 'Rhamnus revoluta belongs to Rhamnus' according to Lesquereux 1891
- 'Rhamnus revoluta belongs to Rhamnus'
- 'Rhamnus salicifolius belongs to Rhamnus' according to Lesquereux 1868
- 'Rhamnus salicifolius belongs to Rhamnus'
- 'Rhamnus similis belongs to Rhamnus' according to Lesquereux 1891
- 'Rhamnus similis belongs to Rhamnus'
- 'Rhamnus tenax belongs to Rhamnus' according to Lesquereux 1868
- 'Rhamnus tenax belongs to Rhamnus'
- 'Rhamnus washakiensis belongs to Rhamnus' according to Cockerell 1908
- 'Rhamnus washakiensis belongs to Rhamnus'
- 'Rhamnus williardi belongs to Rhamnus' according to Knowlton 1916
- 'Rhamnus williardi belongs to Rhamnus'
- 'Rhamnus woottonensis belongs to Rhamnus' according to Knowlton 1918
- 'Rhamnus woottonensis belongs to Rhamnus'
- 'Rhizocaulon gracile belongs to Rhizocaulon' according to Lesquereux 1873
- 'Rhizocaulon gracile is a subjective synonym of Phyllites improbatus'
- 'Rhizocaulon gracile belongs to Rhizocaulon' according to Saporta 1861
- 'Rhizophora belongs to Rhizophoraceae'
- 'Rhizophora eocenica belongs to Rhizophora'
- 'Rhizophoraceae belongs to Myrtales'
- 'Rhus belongs to Anacardiaceae'
- 'Rhus acuminata belongs to Rhus' according to Lesquereux 1871
- 'Rhus acuminata is replaced by Rhus lesquereuxii'
- 'Rhus bella belongs to Rhus' according to Heer 1869
- 'Rhus bella belongs to Rhus'
- 'Rhus bendirei belongs to Rhus'
- 'Rhus bendirei belongs to Rhus' according to Lesquereux 1888
- 'Rhus boweniana belongs to Rhus'
- 'Rhus cassioides belongs to Rhus' according to Lesquereux 1883
- 'Rhus cassioides belongs to Rhus'
- 'Rhus coriarioides belongs to Rhus' according to Lesquereux 1883
- 'Rhus coriarioides belongs to Rhus'
- 'Rhus cretacea belongs to Rhus' according to Heer 1906
- 'Rhus cretacea belongs to Rhus'
- 'Rhus darlingtonensis belongs to Rhus'
- 'Rhus deleta belongs to Rhus' according to Heer 1859
- 'Rhus deleta belongs to Rhus'
- 'Rhus dispersa belongs to Rhus'
- 'Rhus drymeja belongs to Rhus' according to Lesquereux 1873
- 'Rhus drymeja is recombined as Myrica drymeja' according to Knowlton 1898
- 'Rhus evansii belongs to Rhus' according to Lesquereux 1871
- 'Rhus evansii belongs to Rhus'
- 'Rhus fraterna belongs to Rhus' according to Lesquereux 1883
- 'Rhus fraterna is recombined as Cotinus fraterna' according to Cockerell 1905
- 'Rhus frigida belongs to Rhus'
- 'Rhus frigida belongs to Rhus' according to Knowlton 1894
- 'Rhus haydenii belongs to Rhus' according to Lesquereux 1873
- 'Rhus haydenii is recombined as Weinmannia haydenii' according to Lesquereux 1883
- 'Rhus haydenii is recombined as Weinmannia haydenii'
- 'Rhus heuefleri belongs to Rhus' according to Heer 1859
- 'Rhus heuefleri belongs to Rhus'
- 'Rhus hilliae belongs to Rhus' according to Lesquereux 1883
- 'Rhus hilliae belongs to Rhus'
- 'Rhus lesquereuxii belongs to Rhus' according to Knowlton and Cockerell 1919
- 'Rhus membranacea belongs to Rhus' according to Lesquereux 1875
- 'Rhus membranacea belongs to Rhus'
- 'Rhus mensae belongs to Rhus' according to Cockerell 1908
- 'Rhus mensae belongs to Rhus'
- 'Rhus metopioides is replaced by Rhus mensae'
- 'Rhus metopioides belongs to Rhus' according to Turczaninow 1858
- 'Rhus microphylla belongs to Rhus' according to Heer 1874
- 'Rhus microphylla is recombined as Comptonia microphylla' according to Berry 1906
- 'Rhus milleri belongs to Rhus' according to Hollick 1904
- 'Rhus milleri belongs to Rhus'
- 'Rhus mixta belongs to Rhus'
- 'Rhus myricaefolia belongs to Rhus'
- 'Rhus nervosa belongs to Rhus' according to Newberry 1868
- 'Rhus nervosa is replaced by Rhus unitus'
- 'Rhus nervosa belongs to Rhus' according to Ecklon and Zeyher 1834
- 'Rhus nevadensis belongs to Rhus' according to Knowlton 1901
- 'Rhus nevadensis belongs to Rhus'
- 'Rhus payettensis belongs to Rhus' according to Knowlton 1898
- 'Rhus payettensis belongs to Rhus'
- 'Rhus powelliana belongs to Rhus' according to Lesquereux 1891
- 'Rhus powelliana belongs to Rhus'
- 'Rhus pseudomeriani belongs to Rhus' according to Lesquereux 1878
- 'Rhus pseudomeriani is a subjective synonym of Quercus doljensis'
- 'Rhus redditeformis belongs to Rhus' according to Berry 1912
- 'Rhus redditeformis belongs to Rhus'
- 'Rhus rotundifolia belongs to Rhus' according to Kirchner 1898
- 'Rhus rotundifolia is a subjective synonym of Hydrangea florissantia'
- 'Rhus subrhomboidalis belongs to Rhus' according to Lesquereux 1883
- 'Rhus subrhomboidalis belongs to Rhus'
- 'Rhus trifolioides belongs to Rhus' according to Lesquereux 1883
- 'Rhus trifolioides belongs to Rhus'
- 'Rhus typhinoides belongs to Rhus'
- 'Rhus uddeni belongs to Rhus'
- 'Rhus uddeni belongs to Rhus' according to Lesquereux 1891
- 'Rhus unitus belongs to Rhus' according to Knowlton and Cockerell 1919
- 'Rhus vexans belongs to Rhus' according to Lesquereux 1883
- 'Rhus vexans is recombined as Schmaltzia vexans' according to Cockerell 1906
- 'Rhus vexans is recombined as Schmaltzia vexans'
- 'Rhus viburnoides belongs to Rhus' according to Knowlton 1918
- 'Rhus viburnoides belongs to Rhus'
- 'Rhus westii belongs to Rhus' according to Knowlton 1891
- 'Rhus westii belongs to Rhus'
- 'Rhus winchellii belongs to Rhus' according to Lesquereux 1883
- 'Rhus winchellii belongs to Rhus'
- 'Rhynchostegium belongs to Brachytheiaceae'
- 'Rhynchostegium knowltoni belongs to Rhynchostegium' according to Britton 1899
- 'Rhynchostegium knowltoni belongs to Rhynchostegium'
- 'Ribes belongs to Grossulariaceae'
- 'Ribes florissanti belongs to Ribes' according to Knowlton 1916
- 'Ribes florissanti belongs to Ribes'
- 'Ribes neomexicana belongs to Ribes' according to Knowlton 1916
- 'Ribes neomexicana belongs to Ribes'
- 'Ribes protomelaenum belongs to Ribes' according to Cockerell 1908
- 'Ribes protomelaenum belongs to Ribes'
- 'Robinia belongs to Papilionaceae'
- 'Robinia brittoni belongs to Robinia' according to Cockerell 1908
- 'Robinia brittoni belongs to Robinia'
- 'Robinia mesozoica belongs to Robinia' according to Cockerell 1912
- 'Robinia mesozoica belongs to Robinia'
- 'Robinia pseudacacia belongs to Robinia'
- 'Rogersia belongs to Dicotyledones'
- 'Rogersia angustifolia belongs to Rogersia' according to Fontaine 1889
- 'Rogersia angustifolia belongs to Rogersia'
- 'Rogersia longifolia belongs to Rogersia'
- 'Rosa belongs to Rosaceae'
- 'Rosa hilliae belongs to Rosa'
- 'Rosa hilliae belongs to Rosa' according to Lesquereux 1883
- 'Rosa inquirenda belongs to Rosa' according to Knowlton 1916
- 'Rosa inquirenda belongs to Rosa'
- 'Rosa ruskiniana belongs to Rosa' according to Cockerell 1908
- 'Rosa ruskiniana belongs to Rosa'
- 'Rosa scudderi belongs to Rosa' according to Knowlton 1916
- 'Rosa scudderi belongs to Rosa'
- 'Rosa wilmattae belongs to Rosa' according to Cockerell 1908
- 'Rosa wilmattae belongs to Rosa'
- 'Rosaceae belongs to Rosales'
- 'Rosales belongs to Dicotyledones'
- 'Rubiaceae belongs to Rubiales'
- 'Rubiales belongs to Dicotyledones'
- 'Rubioides lignita belongs to Rubioides'
- 'Rubus belongs to Rosaceae'
- 'Ruffordia belongs to Schizaeaceae'
- 'Rulac belongs to Aceraceae'
- 'Rulac crataegifolium belongs to Rulac' according to Knowlton 1902
- 'Rulac crataegifolium belongs to Rulac'
- 'Rutaceae belongs to Geraniales'
- 'Sabal belongs to Arecaceae'
- 'Sabal campbelli belongs to Sabal' according to Newberry 1863
- 'Sabal campbelli is recombined as Sabalites campbelli' according to Lesquereux 1878
- 'Sabal campbelli is recombined as Sabalites campbelli'
- 'Flabellaria communis is a subjective synonym of Sabal eocenica'
- 'Sabal communis belongs to Sabal' according to Lesquereux 1874
- 'Sabal communis is recombined as Flabellaria communis' according to Lesquereux 1875
- 'Sabal goldiana belongs to Sabal' according to Lesquereux 1872
- 'Sabal goldiana belongs to Sabal'
- 'Sabal grandifolia belongs to Sabal' according to Newberry 1898
- 'Sabal grandifolia belongs to Sabal'
- 'Sabal grayana is recombined as Sabalites grayanus' according to Lesquereux 1878
- 'Sabal grayana is recombined as Sabalites grayanus'
- 'Sabal grayana belongs to Sabal' according to Lesquereux 1869
- 'Sabal imperialis belongs to Sabal' according to Dawson 1882
- 'Sabal imperialis belongs to Sabal'
- 'Sabal inquirenda belongs to Sabal' according to Knowlton 1918
- 'Sabal inquirenda is a subjective synonym of Sabal eocenica'
- 'Sabal leei belongs to Sabal' according to Knowlton 1918
- 'Sabal leei belongs to Sabal'
- 'Sabal montana belongs to Sabal' according to Knowlton 1918
- 'Sabal montana belongs to Sabal'
- 'Sabal powellii belongs to Sabal' according to Newberry 1882
- 'Sabal powellii belongs to Sabal'
- 'Sabal rigida belongs to Sabal' according to Hatcher 1901
- 'Sabal rigida belongs to Sabal'
- 'Sabal rugosa belongs to Sabal' according to Knowlton 1918
- 'Sabal rugosa belongs to Sabal'
- 'Sabalites belongs to Arecaceae'
- 'Sabalites californicus belongs to Sabalites'
- 'Sabalites carolinensis belongs to Sabalites'
- 'Sabina belongs to Cupressineae'
- 'Sagenopteris belongs to Hydropteraceae'
- 'Sagenopteris alaskensis belongs to Sagenopteris' according to Fontaine 1905
- 'Sagenopteris alaskensis belongs to Sagenopteris'
- 'Sagenopteris elliptica belongs to Sagenopteris' according to Fontaine 1889
- 'Sagenopteris elliptica belongs to Sagenopteris'
- 'Sagenopteris emmonsi belongs to Sagenopteris' according to Fontaine 1900
- 'Sagenopteris emmonsi belongs to Sagenopteris'
- 'Sagenopteris goeppertiana belongs to Sagenopteris' according to Zigno 1905
- 'Sagenopteris goeppertiana belongs to Sagenopteris'
- 'Sagenopteris grandifolia belongs to Sagenopteris' according to Fontaine 1905
- 'Sagenopteris grandifolia belongs to Sagenopteris'
- 'Sagenopteris latifolia belongs to Sagenopteris' according to Fontaine 1889
- 'Sagenopteris latifolia belongs to Sagenopteris'
- 'Sagenopteris magnifolia belongs to Sagenopteris' according to Ward 1900
- 'Sagenopteris magnifolia belongs to Sagenopteris'
- 'Sagenopteris nervosa belongs to Sagenopteris' according to Fontaine 1905
- 'Sagenopteris nervosa belongs to Sagenopteris'
- 'Sagenopteris oblongifolia belongs to Sagenopteris' according to Penhallow 1902
- 'Sagenopteris oblongifolia belongs to Sagenopteris'
- 'Sagenopteris rhoifolia is a subjective synonym of Sagenopteris nilsoniana'
- 'Sagenopteris virginiensis belongs to Sagenopteris' according to Fontaine 1889
- 'Sagenopteris virginiensis belongs to Sagenopteris'
- 'Sagittaria belongs to Alismaceae'
- 'Sagittaria pulchella belongs to Sagittaria' according to Heer 1869
- 'Sagittaria pulchella belongs to Sagittaria'
- 'Sagittaria victormasoni is recombined as Alismaphyllum victormasoni'
- 'Salicaceae belongs to Salicales'
- 'Salicales belongs to Dicotyledones'
- 'Saliciphyllum belongs to Salicaceae'
- 'Saliciphyllum californicum belongs to Saliciphyllum' according to Fontaine 1905
- 'Saliciphyllum californicum belongs to Saliciphyllum'
- 'Saliciphyllum ellipticum belongs to Saliciphyllum' according to Fontaine 1889
- 'Saliciphyllum ellipticum is a subjective synonym of Celastrophyllum parvifolium'
- 'Saliciphyllum longifolium is a subjective synonym of Rogersia angustifolia'
- 'Saliciphyllum pachyphyllum belongs to Saliciphyllum' according to Fontaine 1905
- 'Saliciphyllum pachyphyllum belongs to Saliciphyllum'
- 'Saliciphyllum parvifolium is recombined as Celastrophyllum parvifolium'
- 'Saliciphyllum parvifolium belongs to Saliciphyllum' according to Fontaine 1889
- 'Saliciphyllum parvifolium is recombined as Celastrophyllum parvifolium' according to Berry 1889
- 'Salisburia is a subjective synonym of Ginkgo'
- 'Salisburia adiantoides belongs to Salisburia' according to Unger 1845
- 'Salisburia adiantoides is recombined as Ginkgo adiantoides' according to Heer 1878
- 'Salisburia adiantoides is recombined as Ginkgo adiantoides'
- 'Salisburia baynesiana belongs to Salisburia' according to Dawson 1882
- 'Salisburia baynesiana is recombined as Ginkgo baynesiana' according to Knowlton 1898
- 'Salisburia binervata belongs to Salisburia' according to Lesquereux 1869
- 'Salisburia binervata is recombined as Ginkgo binervata' according to Knowlton 1898
- 'Salisburia binervata is recombined as Lygodium binervatum' according to Berry 1916
- 'Salisburia binervata is recombined as Lygodium binervatum'
- 'Salisburia nana belongs to Salisburia' according to Dawson 1885
- 'Salisburia nana is recombined as Ginkgo nana' according to Knowlton 1898
- 'Salisburia nana is recombined as Ginkgo nana'
- 'Salisburia polymorpha belongs to Salisburia' according to Lesquereux 1859
- 'Salisburia polymorpha is recombined as Thinnfeldia polymorpha' according to Knowlton 1892
- 'Salisburia polymorpha is recombined as Protophyllocladus polymorphus' according to Berry 1903
- 'Salisburia polymorpha is recombined as Protophyllocladus polymorphus'
- 'Salisburia pusilla belongs to Salisburia' according to Dawson 1893
- 'Salisburia pusilla is recombined as Ginkgo pusilla' according to Knowlton 1898
- 'Ginkgo pusilla is replaced by Ginkgo dawsoni'
- 'Salix belongs to Salicaceae'
- 'Salix amygdalaefolia belongs to Salix' according to Lesquereux 1883
- 'Salix amygdalaefolia is replaced by Salix florissanti'
- 'Salix angusta belongs to Salix' according to Braun 1851
- 'Salix angusta belongs to Salix'
- 'Salix baueri belongs to Salix' according to Knowlton 1916
- 'Salix baueri belongs to Salix'
- 'Salix californica belongs to Salix'
- 'Salix cumberlandensis belongs to Salix' according to Knowlton 1917
- 'Salix cumberlandensis belongs to Salix'
- 'Salix cuneata belongs to Salix' according to Newberry 1868
- 'Salix cuneata is replaced by Salix siouxiana'
- 'Salix cuneata belongs to Salix' according to Nuttall 1865
- 'Salix dayana belongs to Salix' according to Knowlton 1902
- 'Salix dayana belongs to Salix'
- 'Salix deleta belongs to Salix' according to Lesquereux 1891
- 'Salix deleta belongs to Salix'
- 'Salix densinervis is recombined as Eugenia densinervia' according to Berry 1916
- 'Salix densinervis belongs to Salix' according to Lesquereux 1859
- 'Salix elliptica is replaced by Salix merriami'
- 'Salix elliptica belongs to Salix' according to Sleich 1815
- 'Salix elongata belongs to Salix' according to Weber 1853
- 'Salix elongata belongs to Salix'
- 'Salix engelhardti belongs to Salix' according to Lesquereux 1888
- 'Salix engelhardti belongs to Salix'
- 'Salix eutawensis belongs to Salix' according to Berry 1910
- 'Salix eutawensis belongs to Salix'
- 'Salix evanstoniana belongs to Salix' according to Lesquereux 1871
- 'Salix evanstoniana belongs to Salix'
- 'Salix flexuosa belongs to Salix'
- 'Salix florissanti belongs to Salix' according to Knowlton and Cockerell 1919
- 'Salix fluviatilis belongs to Salix' according to Nuttall 1911
- 'Salix fluviatilis belongs to Salix'
- 'Salix foliosa belongs to Salix' according to Newberry 1898
- 'Salix foliosa belongs to Salix'
- 'Salix frontierensis belongs to Salix' according to Knowlton 1917
- 'Salix frontierensis belongs to Salix'
- 'Salix gardneri belongs to Salix' according to Knowlton 1918
- 'Salix gardneri belongs to Salix'
- 'Salix groenlandica belongs to Salix' according to Heer 1871
- 'Salix groenlandica belongs to Salix'
- 'Salix hayei belongs to Salix' according to Lesquereux 1891
- 'Salix hayei belongs to Salix'
- 'Salix inaequalis belongs to Salix' according to Newberry 1895
- 'Salix inaequalis belongs to Salix'
- 'Salix integra belongs to Salix' according to Göppert 1852
- 'Salix integra is replaced by Salix wyomingensis'
- 'Salix integra belongs to Salix' according to Thunberg 1784
- 'Salix islandicus belongs to Salix' according to Lesquereux 1859
- 'Salix islandicus belongs to Salix'
- 'Salix kamloopsiana belongs to Salix' according to Dawson 1890
- 'Salix kamloopsiana belongs to Salix'
- 'Salix laramina belongs to Salix' according to Dawson 1886
- 'Salix laramina belongs to Salix'
- 'Salix lavateri belongs to Salix' according to Heer 1856
- 'Salix lavateri belongs to Salix'
- 'Salix lesquereuxii belongs to Salix'
- 'Salix libbeyi belongs to Salix' according to Lesquereux 1883
- 'Salix libbeyi belongs to Salix'
- 'Salix macrophylla belongs to Salix' according to Heer 1856
- 'Salix macrophylla belongs to Salix'
- 'Salix mattewanensis belongs to Salix' according to Berry 1903
- 'Salix mattewanensis belongs to Salix'
- 'Salix media belongs to Salix' according to Heer 1856
- 'Salix media belongs to Salix'
- 'Salix meekii belongs to Salix' according to Newberry 1868
- 'Salix meekii belongs to Salix'
- 'Salix membranacea belongs to Salix' according to Newberry 1868
- 'Salix membranacea is replaced by Salix raritanensis'
- 'Salix membranacea belongs to Salix' according to Thuill 1799
- 'Salix merriami belongs to Salix' according to Cockerell 1908
- 'Salix merriami belongs to Salix'
- 'Salix minuta belongs to Salix' according to Knowlton 1894
- 'Salix minuta belongs to Salix'
- 'Salix mixta belongs to Salix' according to Knowlton 1902
- 'Salix mixta belongs to Salix'
- 'Salix nervillosa belongs to Salix' according to Heer 1866
- 'Salix nervillosa belongs to Salix'
- 'Salix newberryana belongs to Salix' according to Hollick 1895
- 'Salix newberryana belongs to Salix'
- 'Salix orbicularis belongs to Salix' according to Penhallow 1908
- 'Salix orbicularis belongs to Salix'
- 'Salix pacifica belongs to Salix' according to Dawson 1882
- 'Salix pacifica belongs to Salix'
- 'Salix perplexa belongs to Salix' according to Knowlton 1902
- 'Salix perplexa belongs to Salix'
- 'Salix pilosula belongs to Salix' according to Göppert 1861
- 'Salix pilosula belongs to Salix'
- 'Salix plicata belongs to Salix' according to Knowlton 1918
- 'Salix plicata belongs to Salix'
- 'Salix proteaefolia is replaced by Salix lesquereuxii'
- 'Salix pseudoargentea belongs to Salix' according to Knowlton 1902
- 'Salix pseudoargentea belongs to Salix'
- 'Salix pseudohayei belongs to Salix'
- 'Salix purpuroides belongs to Salix' according to Hollick 1894
- 'Salix purpuroides belongs to Salix'
- 'Salix raeana belongs to Salix' according to Heer 1868
- 'Salix raeana belongs to Salix'
- 'Salix ramaleyi belongs to Salix' according to Cockerell 1906
- 'Salix ramaleyi belongs to Salix'
- 'Salix raritanensis belongs to Salix'
- 'Salix raritanensis belongs to Salix' according to Berry 1909
- 'Salix schimperi belongs to Salix' according to Lesquereux 1888
- 'Salix schimperi belongs to Salix'
- 'Salix siouxiana belongs to Salix' according to Knowlton and Cockerell 1919
- 'Salix sloani belongs to Salix'
- 'Salix stantoni belongs to Salix' according to Knowlton 1900
- 'Salix stantoni belongs to Salix'
- 'Salix tabellaris belongs to Salix' according to Lesquereux 1869
- 'Salix tabellaris is recombined as Apocynophyllum tabellarum' according to Berry 1916
- 'Salix tabellaris is recombined as Apocynophyllum tabellarum'
- 'Salix tulameenensis belongs to Salix' according to Penhallow 1908
- 'Salix tulameenensis belongs to Salix'
- 'Salix vaccinifolia belongs to Salix'
- 'Salix vaccinifolia belongs to Salix' according to Knowlton 1901
- 'Salix varians belongs to Salix' according to Göppert 1852
- 'Salix varians belongs to Salix'
- 'Salix viminalifolia belongs to Salix' according to Berry 1915
- 'Salix viminalifolia belongs to Salix'
- 'Salix wimmeriana belongs to Salix' according to Göppert 1861
- 'Salix wimmeriana belongs to Salix'
- 'Salix worthenii belongs to Salix' according to Lesquereux 1869
- 'Salix worthenii is recombined as Myrcia worthenii' according to Berry 1916
- 'Salix worthenii is recombined as Myrcia worthenii'
- 'Salix wyomingensis belongs to Salix' according to Knowlton and Cockerell 1919
- 'Salpichlaena belongs to Polypodiaceae'
- 'Salvinia belongs to Salviniaceae'
- 'Salvinia attenuata is recombined as Marsilea attenuata' according to Hollick 1894
- 'Salvinia attenuata is recombined as Marsilea attenuata'
- 'Salvinia attenuata belongs to Salvinia' according to Lesquereux 1875
- 'Salvinia cyclophylla belongs to Salvinia' according to Lesquereux 1873
- 'Salvinia cyclophylla is recombined as Phyllites cyclophylla' according to Hollick 1894
- 'Salvinia cyclophylla is recombined as Phyllites cyclophylla'
- 'Salvinia elliptica belongs to Salvinia' according to Newberry 1894
- 'Salvinia elliptica belongs to Salvinia'
- 'Salvinia formosa belongs to Salvinia'
- 'Salviniaceae belongs to Filicales'
- 'Samaropsis oregonensis belongs to Samaropsis' according to Fontaine 1905
- 'Samaropsis oregonensis belongs to Samaropsis'
- 'Sambucus belongs to Caprifoliaceae'
- 'Sambucus amabilis belongs to Sambucus' according to Cockerell 1910
- 'Sambucus amabilis belongs to Sambucus'
- 'Sambucus ellisiae belongs to Sambucus' according to Cockerell 1913
- 'Sambucus ellisiae belongs to Sambucus'
- 'Sambucus newtoni belongs to Sambucus' according to Cockerell 1908
- 'Sambucus newtoni belongs to Sambucus'
- 'Santalaceae belongs to Santalales'
- 'Santalales belongs to Dicotyledones'
- 'Santalum belongs to Santalaceae'
- 'Santalum americanum belongs to Santalum' according to Lesquereux 1883
- 'Santalum americanum belongs to Santalum'
- 'Santalum novaecaesareae belongs to Santalum'
- 'Santalum novaecaesareae belongs to Santalum' according to Berry 1906
- 'Sapindaceae belongs to Sapindales'
- 'Sapindales belongs to Dicotyledones'
- 'Sapindoides belongs to Sapindaceae'
- 'Sapindoides cylindricus belongs to Sapindoides' according to Perkins 1904
- 'Sapindoides cylindricus belongs to Sapindoides'
- 'Sapindoides medius belongs to Sapindoides' according to Perkins 1904
- 'Sapindoides medius belongs to Sapindoides'
- 'Sapindoides minimus belongs to Sapindoides' according to Perkins 1904
- 'Sapindoides minimus belongs to Sapindoides'
- 'Sapindoides parva belongs to Sapindoides' according to Perkins 1904
- 'Sapindoides parva belongs to Sapindoides'
- 'Sapindoides urceolatus belongs to Sapindoides' according to Perkins 1906
- 'Sapindoides urceolatus belongs to Sapindoides'
- 'Sapindoides varius belongs to Sapindoides'
- 'Sapindoides vermontanus belongs to Sapindoides'
- 'Sapindoides vermontanus belongs to Sapindoides' according to Perkins 1904
- 'Sapindopsis belongs to Sapindaceae'
- 'Sapindopsis brevifolia belongs to Sapindopsis' according to Fontaine 1889
- 'Sapindopsis brevifolia belongs to Sapindopsis'
- 'Sapindopsis cordata is a subjective synonym of Ficophyllum crassinerve'
- 'Sapindopsis elliptica belongs to Sapindopsis' according to Fontaine 1889
- 'Sapindopsis elliptica is a subjective synonym of Rogersia longifolia'
- 'Sapindopsis magnifolia belongs to Sapindopsis' according to Fontaine 1889
- 'Sapindopsis magnifolia belongs to Sapindopsis'
- 'Sapindopsis obtusifolia belongs to Sapindopsis' according to Fontaine 1889
- 'Sapindopsis obtusifolia is a subjective synonym of Sapindopsis magnifolia'
- 'Sapindopsis oregonensis is recombined as Nilsonia oregonensis' according to Berry 1910
- 'Sapindopsis oregonensis is recombined as Nilsonia oregonensis'
- 'Sapindopsis oregonensis belongs to Sapindopsis' according to Fontaine 1905
- 'Sapindopsis parvifolia is a subjective synonym of Sapindopsis variabilis'
- 'Sapindopsis parvifolia belongs to Sapindopsis' according to Fontaine 1889
- 'Sapindopsis tenuinervis belongs to Sapindopsis' according to Fontaine 1889
- 'Sapindopsis tenuinervis is a subjective synonym of Sapindopsis magnifolia'
- 'Sapindopsis variabilis belongs to Sapindopsis' according to Fontaine 1889
- 'Sapindopsis variabilis belongs to Sapindopsis'
- 'Sapindus belongs to Sapindaceae'
- 'Sapindus affinis belongs to Sapindus' according to Newberry 1868
- 'Sapindus affinis belongs to Sapindus'
- 'Sapindus alatus belongs to Sapindus' according to Ward 1885
- 'Sapindus alatus is replaced by Sapindus glendivensis'
- 'Sapindus alatus belongs to Sapindus' according to Salisbury 1776
- 'Sapindus americanus belongs to Sapindus' according to Lesquereux 1861
- 'Sapindus americanus is recombined as Sapindoides americanus' according to Perkins 1904
- 'Sapindus americanus is recombined as Sapindoides americanus'
- 'Sapindus angustifolius belongs to Sapindus' according to Lesquereux 1873
- 'Sapindus apiculatus belongs to Sapindus' according to Velenovsky 1884
- 'Sapindus apiculatus belongs to Sapindus'
- 'Sapindus bentonensis belongs to Sapindus' according to Berry 1916
- 'Sapindus bentonensis belongs to Sapindus'
- 'Sapindus caudatus belongs to Sapindus' according to Lesquereux 1872
- 'Sapindus caudatus belongs to Sapindus'
- 'Sapindus coloradensis belongs to Sapindus' according to Cockerell 1908
- 'Sapindus coloradensis belongs to Sapindus'
- 'Sapindus coriaceus belongs to Sapindus' according to Lesquereux 1873
- 'Sapindus coriaceus is recombined as Sapotacites coriaceus'
- 'Sapindus coushatta belongs to Sapindus' according to Berry 1916
- 'Sapindus coushatta belongs to Sapindus'
- 'Sapindus dentoni belongs to Sapindus' according to Lesquereux 1875
- 'Sapindus dentoni belongs to Sapindus'
- 'Sapindus diversifolius belongs to Sapindus' according to Lesquereux 1891
- 'Sapindus diversifolius belongs to Sapindus'
- 'Sapindus eoligniticus belongs to Sapindus' according to Berry 1916
- 'Sapindus eoligniticus belongs to Sapindus'
- 'Sapindus formosus belongs to Sapindus' according to Berry 1916
- 'Sapindus formosus belongs to Sapindus'
- 'Sapindus georgiana belongs to Sapindus'
- 'Sapindus glendivensis belongs to Sapindus'
- 'Sapindus grandifolioloides belongs to Sapindus'
- 'Sapindus grandifoliolus belongs to Sapindus' according to Ward 1885
- 'Sapindus grandifoliolus belongs to Sapindus'
- 'Sapindus imperfectus belongs to Sapindus' according to Hollick 1904
- 'Sapindus imperfectus belongs to Sapindus'
- 'Sapindus inexpectans belongs to Sapindus' according to Knowlton 1905
- 'Sapindus inexpectans belongs to Sapindus'
- 'Sapindus inflexus belongs to Sapindus' according to Lesquereux 1883
- 'Sapindus inflexus belongs to Sapindus'
- 'Sapindus knowltoni belongs to Sapindus' according to Berry 1916
- 'Sapindus knowltoni belongs to Sapindus'
- 'Sapindus lancifolius belongs to Sapindus' according to Lesquereux 1883
- 'Sapindus lancifolius belongs to Sapindus'
- 'Sapindus leonis belongs to Sapindus' according to Cockerell 1908
- 'Sapindus leonis belongs to Sapindus'
- 'Sapindus linearifolius belongs to Sapindus' according to Berry 1916
- 'Sapindus linearifolius belongs to Sapindus'
- 'Sapindus marylandicus belongs to Sapindus' according to Hollick 1906
- 'Sapindus marylandicus belongs to Sapindus'
- 'Sapindus membranaceus belongs to Sapindus' according to Newberry 1868
- 'Sapindus membranaceus belongs to Sapindus'
- 'Sapindus merriami belongs to Sapindus' according to Knowlton 1902
- 'Sapindus merriami belongs to Sapindus'
- 'Sapindus mississippiensis belongs to Sapindus' according to Berry 1916
- 'Sapindus mississippiensis belongs to Sapindus'
- 'Sapindus morrisoni belongs to Sapindus'
- 'Sapindus morrisoni belongs to Sapindus' according to Lesquereux 1883
- 'Sapindus obtusifolius belongs to Sapindus' according to Lesquereux 1873
- 'Sapindus obtusifolius belongs to Sapindus'
- 'Sapindus oklahomensis belongs to Sapindus' according to Berry 1918
- 'Sapindus oklahomensis belongs to Sapindus'
- 'Sapindus oregonianus belongs to Sapindus' according to Knowlton 1902
- 'Sapindus oregonianus belongs to Sapindus'
- 'Sapindus oxfordensis belongs to Sapindus' according to Berry 1916
- 'Sapindus oxfordensis belongs to Sapindus'
- 'Sapindus pseudaffinis belongs to Sapindus' according to Berry 1916
- 'Sapindus pseudaffinis belongs to Sapindus'
- 'Sapindus rocklandensis belongs to Sapindus' according to Knowlton 1918
- 'Sapindus rocklandensis belongs to Sapindus'
- 'Sapindus stellariaefolius belongs to Sapindus' according to Lesquereux 1878
- 'Sapindus stellariaefolius belongs to Sapindus'
- 'Sapindus variabilis belongs to Sapindus' according to Berry 1919
- 'Sapindus variabilis belongs to Sapindus'
- 'Sapindus wardii belongs to Sapindus'
- 'Sapotaceae belongs to Ebenales'
- 'Sapotacites belongs to Sapotaceae'
- 'Sapotacites americanus is recombined as Bumelia americana'
- 'Sapotacites americanus belongs to Sapotacites' according to Lesquereux 1869
- 'Sapotacites americanus is recombined as Bumelia americana' according to Berry 1916
- 'Sapotacites copeanus belongs to Sapotacites' according to Ettingshausen 1883
- 'Sapotacites copeanus is a subjective synonym of Sapotacites coriaceus'
- 'Sapotacites ettingshauseni belongs to Sapotacites'
- 'Sapotacites ettingshauseni belongs to Sapotacites' according to Berry 1919
- 'Sapotacites formosus belongs to Sapotacites' according to Berry 1919
- 'Sapotacites formosus belongs to Sapotacites'
- 'Sapotacites haydenii belongs to Sapotacites' according to Heer 1858
- 'Sapotacites haydenii belongs to Sapotacites'
- 'Sapotacites knowltoni belongs to Sapotacites' according to Berry 1906
- 'Sapotacites knowltoni belongs to Sapotacites'
- 'Sapotacites retusus belongs to Sapotacites' according to Heer 1883
- 'Sapotacites retusus is recombined as Liriodendropsis retusa' according to Hollick 1906
- 'Sapotacites retusus is recombined as Liriodendropsis retusa'
- 'Sapotacites shirleyensis belongs to Sapotacites' according to Berry 1919
- 'Sapotacites shirleyensis belongs to Sapotacites'
- 'Sarraceniales belongs to Dicotyledones'
- 'Sassafras belongs to Lauraceae'
- 'Sassafras acutilobum belongs to Sassafras'
- 'Sassafras angustilobum belongs to Sassafras' according to Hollick 1906
- 'Sassafras angustilobum belongs to Sassafras'
- 'Sassafras bilobatum belongs to Sassafras' according to Fontaine 1889
- 'Sassafras bilobatum belongs to Sassafras'
- 'Sassafras burpeana belongs to Sassafras'
- 'Sassafras burpeana belongs to Sassafras' according to Dawson 1885
- 'Sassafras cretaceum is recombined as Araliopsoides cretacea' according to Berry 1916
- 'Sassafras cretaceum is recombined as Araliopsoides cretacea'
- 'Sassafras dissectum belongs to Sassafras' according to Lesquereux 1883
- 'Sassafras dissectum belongs to Sassafras'
- 'Sassafras giganteum belongs to Sassafras' according to Gould 1900
- 'Sassafras giganteum belongs to Sassafras'
- 'Sassafras harkeriana is recombined as Araliopsis harkerianum' according to Lesquereux 1874
- 'Sassafras harkeriana is recombined as Cissites harkerianus' according to Lesquereux 1875
- 'Sassafras harkeriana is recombined as Cissites harkerianus'
- 'Sassafras harkeriana belongs to Sassafras' according to Lesquereux 1872
- 'Sassafras hastatum belongs to Sassafras' according to Newberry 1895
- 'Sassafras hastatum belongs to Sassafras'
- 'Sassafras leconteanum belongs to Sassafras' according to Lesquereux 1869
- 'Sassafras leconteanum is recombined as Persea leconteana' according to Lesquereux 1874
- 'Sassafras leconteanum is recombined as Persea leconteana'
- 'Sassafras mirabilis belongs to Sassafras' according to Lesquereux 1872
- 'Sassafras mirabilis is a subjective synonym of Sassafras latilobum'
- 'Sassafras mudgii belongs to Sassafras' according to Lesquereux 1868
- 'Sassafras mudgii belongs to Sassafras'
- 'Sassafras obtusus belongs to Sassafras' according to Lesquereux 1872
- 'Sassafras obtusus is recombined as Cissites obtusum' according to Lesquereux 1874
- 'Sassafras obtusus is recombined as Araliopsis obtusum' according to Lesquereux 1883
- 'Araliopsis obtusum is a subjective synonym of Araliopsoides cretacea'
- 'Sassafras papillosum belongs to Sassafras' according to Lesquereux 1891
- 'Sassafras papillosum belongs to Sassafras'
- 'Sassafras parvifolium belongs to Sassafras'
- 'Sassafras parvifolium belongs to Sassafras' according to Fontaine 1889
- 'Sassafras platanoides belongs to Sassafras' according to Lesquereux 1883
- 'Sassafras platanoides belongs to Sassafras'
- 'Sassafras potomacensis belongs to Sassafras'
- 'Sassafras primordiale belongs to Sassafras' according to Lesquereux 1891
- 'Sassafras primordiale belongs to Sassafras'
- 'Sassafras progenitor belongs to Sassafras' according to Newberry 1894
- 'Sassafras progenitor belongs to Sassafras'
- 'Sassafras recurvata belongs to Sassafras' according to Lesquereux 1874
- 'Sassafras recurvata is corrected as Sassafras recurvatus and belongs to Sassafras' according to Lesquereux 1872
- 'Sassafras recurvata is corrected as Sassafras recurvatum and belongs to Sassafras' according to Lesquereux 1883
- 'Sassafras recurvata is corrected as Sassafras recurvatum and belongs to Sassafras'
- 'Sassafras selwynii belongs to Sassafras' according to Dawson 1880
- 'Sassafras selwynii belongs to Sassafras'
- 'Sassafras subintegrifolium belongs to Sassafras' according to Lesquereux 1868
- 'Sassafras subintegrifolium belongs to Sassafras'
- 'Sassafrophyllum is a subjective synonym of Sassafras'
- 'Saxifraga belongs to Saxifragaceae'
- 'Saxifraga peritula belongs to Saxifraga' according to Cockerell 1908
- 'Saxifraga peritula belongs to Saxifraga'
- 'Saxifragaceae belongs to Rosales'
- 'Schizaeaceae belongs to Filicales'
- 'Schizaeopsis americana belongs to Schizaeopsis' according to Berry 1917
- 'Schizaeopsis americana belongs to Schizaeopsis'
- 'Schizaeopsis expansa is a subjective synonym of Schizaeopsis americana'
- 'Schizaeopteris belongs to Schizaeaceae'
- 'Schizolepis belongs to Coniferales'
- 'Schizolepis liasokeuperinus is corrected as Schizolepis liasokeuperiana and belongs to Schizolepis'
- 'Schizonema virginiensis belongs to Schizonema' according to Fontaine 1883
- 'Schizonema virginiensis is recombined as Neocalamites virginiensis' according to Berry 1912
- 'Schizonema virginiensis is recombined as Neocalamites virginiensis'
- 'Schizoneura belongs to Equisetaceae'
- 'Schizopteris gracilis is recombined as Baiera gracilis' according to Bunbury 1851
- 'Schizopteris gracilis is recombined as Baiera gracilis'
- 'Schizopteris gracilis belongs to Schizopteris' according to Bean 1843
- 'Schmaltzia belongs to Anacardiaceae'
- 'Scirpus belongs to Cyperaceae'
- 'Scitaminales belongs to Monocotyledones'
- 'Sclerophyllina dichotoma belongs to Sclerophyllina' according to Heer 1868
- 'Sclerophyllina dichotoma is recombined as Czekanowskia dichotoma' according to Heer 1882
- 'Scleropteris belongs to Pteridophyta'
- 'Scleropteris dentata belongs to Scleropteris' according to Fontaine 1889
- 'Scleropteris dentata is recombined as Zamiopsis dentata' according to Berry 1911
- 'Scleropteris dentata is recombined as Zamiopsis dentata'
- 'Scleropteris distantifolia belongs to Scleropteris' according to Fontaine 1899
- 'Scleropteris distantifolia belongs to Scleropteris'
- 'Scleropteris elliptica belongs to Scleropteris' according to Fontaine 1889
- 'Scleropteris elliptica belongs to Scleropteris'
- 'Scleropteris oregonensis belongs to Scleropteris' according to Fontaine 1905
- 'Scleropteris oregonensis belongs to Scleropteris'
- 'Scleropteris rotundifolia belongs to Scleropteris' according to Fontaine 1899
- 'Scleropteris rotundifolia belongs to Scleropteris'
- 'Scleropteris vernonensis is recombined as Dicksoniopsis vernonensis'
- 'Scleropteris vernonensis belongs to Scleropteris' according to Ward 1895
- 'Scleropteris virginica belongs to Scleropteris' according to Fontaine 1889
- 'Scleropteris virginica is a subjective synonym of Scleropteris elliptica'
- 'Sclerotites brandonianus belongs to Sclerotites' according to Jeffrey and Chrysler 1906
- 'Sclerotites brandonianus belongs to Sclerotites'
- 'Sclerotium belongs to Plantae'
- 'Sclerotium rubellum is recombined as Sclerotites rubellus' according to Meschinelli 1892
- 'Sclerotium rubellum is recombined as Sclerotites rubellus'
- 'Sclerotium rubellum belongs to Sclerotium' according to Lesquereux 1872
- 'Scrophulariaceae belongs to Tubiflorae'
- 'Selaginella belongs to Selaginellaceae'
- 'Selaginella berthoudii [misspelled as Selaginella berthoudi] belongs to Selaginella'
- 'Selaginella collieri belongs to Selaginella'
- 'Selaginella falcata belongs to Selaginella' according to Lesquereux 1878
- 'Selaginella falcata belongs to Selaginella'
- 'Selaginella laciniata belongs to Selaginella' according to Lesquereux 1875
- 'Selaginella laciniata belongs to Selaginella'
- 'Selaginella marylandica belongs to Selaginella' according to Fontaine 1905
- 'Selaginella marylandica belongs to Selaginella'
- 'Selaginellaceae belongs to Lycopodiales'
- 'Sequoia belongs to Taxodieae'
- 'Sequoia acuminata belongs to Sequoia' according to Lesquereux 1875
- 'Sequoia acuminata belongs to Sequoia'
- 'Sequoia acutifolia belongs to Sequoia' according to Newberry 1891
- 'Sequoia acutifolia belongs to Sequoia'
- 'Sequoia affinis belongs to Sequoia'
- 'Sequoia albertensis belongs to Sequoia' according to Penhallow 1908
- 'Sequoia albertensis belongs to Sequoia'
- 'Sequoia ambigua belongs to Sequoia'
- 'Sequoia ambigua belongs to Sequoia' according to Heer 1878
- 'Sequoia angustifolia belongs to Sequoia' according to Lesquereux 1872
- 'Sequoia angustifolia belongs to Sequoia'
- 'Sequoia biformis belongs to Sequoia' according to Lesquereux 1875
- 'Sequoia biformis is recombined as Geinitzia biforma' according to Knowlton 1900
- 'Sequoia biformis is recombined as Geinitzia biforma'
- 'Sequoia brevifolia belongs to Sequoia' according to Heer 1868
- 'Sequoia brevifolia belongs to Sequoia'
- 'Sequoia burgessii belongs to Sequoia' according to Penhallow 1903
- 'Sequoia burgessii belongs to Sequoia'
- 'Sequoia charlottensis belongs to Sequoia'
- 'Sequoia concinna belongs to Sequoia'
- 'Sequoia concinna belongs to Sequoia' according to Heer 1906
- 'Sequoia condita belongs to Sequoia' according to Lesquereux 1875
- 'Sequoia condita belongs to Sequoia'
- 'Sequoia couttsiae belongs to Sequoia'
- 'Sequoia couttsiae belongs to Sequoia' according to Heer 1862
- 'Sequoia cycadopsis belongs to Sequoia' according to Fontaine 1889
- 'Sequoia cycadopsis is recombined as Dichotozamites cycadopsis'
- 'Sequoia delicatula belongs to Sequoia' according to Fontaine 1889
- 'Sequoia delicatula belongs to Sequoia'
- 'Sequoia densifolia belongs to Sequoia' according to Fontaine 1889
- 'Sequoia densifolia is a subjective synonym of Sequoia reichenbachi'
- 'Sequoia fairbanksi belongs to Sequoia' according to Fontaine 1905
- 'Sequoia fairbanksi belongs to Sequoia'
- 'Sequoia formosa belongs to Sequoia'
- 'Sequoia formosa belongs to Sequoia' according to Lesquereux 1868
- 'Sequoia gracilis belongs to Sequoia' according to Heer 1873
- 'Sequoia gracilis belongs to Sequoia'
- 'Sequoia heerii belongs to Sequoia' according to Lesquereux 1871
- 'Sequoia heerii belongs to Sequoia'
- 'Sequoia heterophylla belongs to Sequoia' according to Velenovsky 1885
- 'Sequoia heterophylla belongs to Sequoia'
- 'Sequoia inferna belongs to Sequoia' according to Ward 1905
- 'Sequoia inferna is a subjective synonym of Sequoia reichenbachi'
- 'Sequoia longifolia belongs to Sequoia' according to Lesquereux 1875
- 'Sequoia longifolia belongs to Sequoia'
- 'Sequoia magnifica belongs to Sequoia' according to Knowlton 1898
- 'Sequoia magnifica belongs to Sequoia'
- 'Sequoia magnifolia belongs to Sequoia' according to Knowlton 1916
- 'Sequoia magnifolia belongs to Sequoia'
- 'Sequoia minor belongs to Sequoia' according to Velenovsky 1886
- 'Sequoia minor belongs to Sequoia'
- 'Sequoia nordenskioeldii belongs to Sequoia' according to Heer 1870
- 'Sequoia nordenskioeldii belongs to Sequoia'
- 'Sequoia obovata belongs to Sequoia' according to Knowlton 1916
- 'Sequoia obovata belongs to Sequoia'
- 'Sequoia pagiophylloides belongs to Sequoia' according to Fontaine 1893
- 'Sequoia pagiophylloides belongs to Sequoia'
- 'Sequoia penhallowi belongs to Sequoia' according to Jeffrey 1904
- 'Sequoia penhallowi belongs to Sequoia'
- 'Sequoia rigida belongs to Sequoia' according to Heer 1873
- 'Sequoia rigida belongs to Sequoia'
- 'Sequoia smittiana belongs to Sequoia' according to Heer 1872
- 'Sequoia smittiana belongs to Sequoia'
- 'Sequoia spinosa belongs to Sequoia' according to Newberry 1882
- 'Sequoia spinosa belongs to Sequoia'
- 'Sequoia winchellii belongs to Sequoia' according to Lesquereux 1884
- 'Sequoia winchellii belongs to Sequoia'
- 'Serenopsis is a subjective synonym of Nelumbo'
- 'Serenopsis kempii is recombined as Nelumbo kempii' according to Hollick 1904
- 'Serenopsis kempii is recombined as Nelumbo kempii'
- 'Sicyos belongs to Cucurbitaceae'
- 'Sicyos florissantia belongs to Sicyos' according to Cockerell 1908
- 'Sicyos florissantia belongs to Sicyos'
- 'Sideroxylon belongs to Sapotaceae'
- 'Sideroxylon ellipticus belongs to Sideroxylon' according to Berry 1916
- 'Sideroxylon ellipticus belongs to Sideroxylon'
- 'Sideroxylon premastichodendron belongs to Sideroxylon' according to Berry 1916
- 'Sideroxylon premastichodendron belongs to Sideroxylon'
- 'Simarouba belongs to Simarubaceae'
- 'Simarouba eocenica belongs to Simarouba' according to Berry 1916
- 'Simarouba eocenica belongs to Simarouba'
- 'Simaroubaceae [misspelled as Simarubaceae] belongs to Geraniales'
- 'Simarubinium belongs to Simarubaceae'
- 'Simarubinium crystallophorum belongs to Simarubinium'
- 'Simarubinium engelhardti belongs to Simarubinium' according to Platen 1907
- 'Simarubinium engelhardti belongs to Simarubinium'
- 'Smilacaceae [misspelled as Smilaceae] belongs to Liliales'
- 'Smilax belongs to Smilaceae'
- 'Smilax carbonensis belongs to Smilax' according to Cockerell 1914
- 'Smilax carbonensis belongs to Smilax'
- 'Smilax coloradensis belongs to Smilax' according to Knowlton 1917
- 'Smilax coloradensis belongs to Smilax'
- 'Smilax cyclophylla belongs to Smilax'
- 'Smilax cyclophylla belongs to Smilax' according to Newberry 1863
- 'Smilax franklini belongs to Smilax' according to Heer 1868
- 'Smilax franklini belongs to Smilax'
- 'Smilax grandifoliacretacea belongs to Smilax' according to Lesquereux 1891
- 'Smilax grandifoliacretacea belongs to Smilax'
- 'Smilax kansana belongs to Smilax' according to Cockerell 1914
- 'Smilax kansana belongs to Smilax'
- 'Smilax labidurommae belongs to Smilax' according to Cockerell 1914
- 'Smilax labidurommae belongs to Smilax'
- 'Smilax lamarensis belongs to Smilax'
- 'Smilax obtusangula belongs to Smilax' according to Heer 1859
- 'Smilax obtusangula belongs to Smilax'
- 'Smilax raritanensis belongs to Smilax'
- 'Smilax raritanensis belongs to Smilax' according to Berry 1909
- 'Smilax undulata belongs to Smilax' according to Lesquereux 1892
- 'Smilax undulata is replaced by Smilax kansana'
- 'Smilax undulata belongs to Smilax' according to Pohl 1878
- 'Smilax wardii belongs to Smilax' according to Lesquereux 1888
- 'Smilax wardii belongs to Smilax'
- 'Solanaceae belongs to Tubiflorae'
- 'Solanites belongs to Solanaceae'
- 'Solanites saportana belongs to Solanites' according to Berry 1916
- 'Solanites saportana belongs to Solanites'
- 'Sophora belongs to Papilionaceae'
- 'Sophora claiborneana belongs to Sophora' according to Berry 1918
- 'Sophora claiborneana belongs to Sophora'
- 'Sophora henryensis belongs to Sophora' according to Berry 1916
- 'Sophora henryensis belongs to Sophora'
- 'Sophora lesquereuxi belongs to Sophora' according to Berry 1916
- 'Sophora lesquereuxi belongs to Sophora'
- 'Sophora mucronata belongs to Sophora' according to Berry 1916
- 'Sophora mucronata belongs to Sophora'
- 'Sophora nervosa belongs to Sophora'
- 'Sophora nervosa belongs to Sophora' according to Knowlton 1918
- 'Sophora palaelobifolia belongs to Sophora' according to Berry 1916
- 'Sophora palaelobifolia belongs to Sophora'
- 'Sophora puryearensis belongs to Sophora' according to Berry 1916
- 'Sophora puryearensis belongs to Sophora'
- 'Sophora repandifolia belongs to Sophora' according to Berry 1916
- 'Sophora repandifolia belongs to Sophora'
- 'Sophora wilcoxiana belongs to Sophora' according to Berry 1916
- 'Sophora wilcoxiana belongs to Sophora'
- 'Sorbus belongs to Pomaceae'
- 'Sorbus megaphylla belongs to Sorbus' according to Cockerell 1908
- 'Sorbus megaphylla belongs to Sorbus'
- 'Sorbus nupta belongs to Sorbus' according to Cockerell 1910
- 'Sorbus nupta belongs to Sorbus'
- 'Sparganiaceae belongs to Pandanales'
- 'Sparganium belongs to Sparganiaceae'
- 'Sparganium stygium belongs to Sparganium'
- 'Spathyema belongs to Plantae'
- 'Spathyema nevadensis belongs to Spathyema' according to Knowlton 1901
- 'Spathyema nevadensis belongs to Spathyema'
- 'Spegazzinites belongs to Tuberculariaceae'
- 'Spegazzinites cruciformis belongs to Spegazzinites'
- 'Spermatophyta belongs to Plantae'
- 'Sphaeriaceae belongs to Sphaeriales'
- 'Sphaeriales belongs to Ascomycota'
- 'Sphaerites belongs to Sphaeriaceae'
- 'Sphaerites alabamensis belongs to Sphaerites' according to Berry 1919
- 'Sphaerites alabamensis belongs to Sphaerites'
- 'Sphaerites claibornensis belongs to Sphaerites'
- 'Sphaerites lesquereuxi belongs to Sphaerites' according to Meschinelli 1892
- 'Sphaerites lesquereuxi belongs to Sphaerites'
- 'Sphaerites myricae belongs to Sphaerites' according to Lesquereux 1872
- 'Sphaerites myricae belongs to Sphaerites'
- 'Sphaerites problematicus belongs to Sphaerites' according to Knowlton 1891
- 'Sphaerites problematicus belongs to Sphaerites'
- 'Sphaerites raritanensis belongs to Sphaerites' according to Berry 1910
- 'Sphaerites raritanensis belongs to Sphaerites'
- 'Sphaerococcites muensterianus belongs to Sphaerococcites' according to Presl 1838
- 'Sphaerococcites muensterianus is recombined as Baiera muensteriana' according to Newberry 1887
- 'Sphaerococcites muensterianus is recombined as Baiera muensteriana'
- 'Sphenaspis belongs to Coniferales'
- 'Sphenaspis statenensis belongs to Sphenaspis'
- 'Sphenoglossum is a subjective synonym of Actinopteris'
- 'Sphenoglossum quadrifolium is recombined as Actinopteris quadrifoliata' according to Fontaine 1883
- 'Sphenoglossum quadrifolium is recombined as Actinopteris quadrifolia'
- 'Sphenolepidium belongs to Taxodieae'
- 'Sphenolepidium dentifolium belongs to Sphenolepidium' according to Fontaine 1889
- 'Sphenolepidium dentifolium is a subjective synonym of Sequoia ambigua'
- 'Sphenolepidium oregonense belongs to Sphenolepidium' according to Fontaine 1905
- 'Sphenolepidium oregonense belongs to Sphenolepidium'
- 'Sphenolepidium pachyphyllum belongs to Sphenolepidium' according to Fontaine 1889
- 'Sphenolepidium pachyphyllum belongs to Sphenolepidium'
- 'Sphenolepidium parceramosum belongs to Sphenolepidium' according to Fontaine 1889
- 'Sphenolepidium parceramosum is a subjective synonym of Sphenolepis kurriana'
- 'Sphenolepidium recurvifolium belongs to Sphenolepidium' according to Fontaine 1889
- 'Sphenolepidium recurvifolium is a subjective synonym of Sequoia ambigua'
- 'Sphenolepidium sternbergianum belongs to Sphenolepidium'
- 'Sphenolepidium virginicum belongs to Sphenolepidium' according to Fontaine 1889
- 'Sphenolepidium virginicum is a subjective synonym of Sphenolepis kurriana'
- 'Sphenopteris belongs to Pteridophyta'
- 'Sphenopteris (Asplenium) elongatum is recombined as Anemia elongata'
- 'Sphenopteris (Asplenium) elongatum belongs to Sphenopteris (Asplenium)' according to Newberry 1863
- 'Sphenopteris acrodenta belongs to Sphenopteris' according to Fontaine 1890
- 'Sphenopteris acrodenta is recombined as Ruffordia acrodenta' according to Berry 1911
- 'Sphenopteris acrodenta is recombined as Ruffordia acrodenta'
- 'Sphenopteris blomstrandi belongs to Sphenopteris' according to Heer 1868
- 'Sphenopteris blomstrandi is a subjective synonym of Dennstaedtia americana'
- 'Sphenopteris corrugata belongs to Sphenopteris' according to Newberry 1868
- 'Sphenopteris corrugata belongs to Sphenopteris'
- 'Sphenopteris egyptiaca belongs to Sphenopteris' according to Emmons 1857
- 'Sphenopteris egyptiaca belongs to Sphenopteris'
- 'Sphenopteris egyptiaca is recombined as Acrostichides egyptiacus' according to Fontaine 1883
- 'Sphenopteris fremonti belongs to Sphenopteris' according to Hall 1843
- 'Sphenopteris fremonti is recombined as Dennstaedtia fremonti' according to Knowlton 1917
- 'Sphenopteris grevillioides belongs to Sphenopteris' according to Heer 1874
- 'Sphenopteris grevillioides is recombined as Thyrsopteris grevillioides' according to Hollick 1906
- 'Sphenopteris guyottii is recombined as Phegopteris guyottii' according to Cockerell 1908
- 'Sphenopteris guyottii is recombined as Phegopteris guyottii'
- 'Sphenopteris guyottii belongs to Sphenopteris' according to Lesquereux 1883
- 'Sphenopteris hymenophylloides belongs to Sphenopteris' according to Brongniart 1828
- 'Sphenopteris hymenophylloides is recombined as Coniopteris hymenophylloides' according to Seward 1900
- 'Sphenopteris hymenophylloides is recombined as Coniopteris hymenophylloides'
- 'Sphenopteris lakesii belongs to Sphenopteris' according to Lesquereux 1878
- 'Sphenopteris lakesii is recombined as Aspidium lakesii' according to Knowlton 1892
- 'Aspidium lakesii is a subjective synonym of Dryopteris arguta'
- 'Sphenopteris latiloba belongs to Sphenopteris' according to Fontaine 1889
- 'Sphenopteris latiloba is recombined as Onychiopsis latiloba'
- 'Sphenopteris membranacea belongs to Sphenopteris' according to Lesquereux 1873
- 'Sphenopteris membranacea is a subjective synonym of Dryopteris arguta'
- 'Sphenopteris nigricans belongs to Sphenopteris' according to Lesquereux 1873
- 'Sphenopteris nigricans is recombined as Dryopteris nigricans'
- 'Sphenopteris obtusifolia [misspelled as Cladophlebis obtusiloba] belongs to Cladophlebis' according to Fontaine 1883
- 'Sphenopteris obtusifolia is recombined as Cladophlebis obtusifolia' according to Ward 1899
- 'Sphenopteris obtusifolia is recombined as Cladophlebis obtusifolia'
- 'Sphenopteris obtusifolia belongs to Sphenopteris' according to Andrae 1855
- 'Sphenopteris pachyphylla belongs to Sphenopteris' according to Fontaine 1889
- 'Sphenopteris pachyphylla is a subjective synonym of Ruffordia goepperti'
- 'Sphenopteris paucifolia belongs to Sphenopteris' according to Hall 1845
- 'Sphenopteris paucifolia is recombined as Microtaenia paucifolia' according to Knowlton 1917
- 'Sphenopteris paucifolia is recombined as Microtaenia paucifolia'
- 'Sphenopteris plurinervia belongs to Sphenopteris' according to Heer 1881
- 'Sphenopteris plurinervia belongs to Sphenopteris'
- 'Sphenopteris princeps belongs to Sphenopteris' according to Presl 1841
- 'Sphenopteris princeps is recombined as Acrostichites princeps'
- 'Sphenopteris spatulata belongs to Sphenopteris' according to Fontaine 1889
- 'Sphenopteris spatulata is a subjective synonym of Ruffordia goepperti'
- 'Sphenopteris thysopteroides belongs to Sphenopteris' according to Fontaine 1889
- 'Sphenopteris thysopteroides is a subjective synonym of Ruffordia goepperti'
- 'Sphenozamites belongs to Cycadaceae'
- 'Sphenozamites oblanceolatus belongs to Sphenozamites' according to Penhallow 1902
- 'Sphenozamites oblanceolatus belongs to Sphenozamites'
- 'Sphenozamites rogersianus belongs to Sphenozamites' according to Fontaine 1883
- 'Sphenozamites rogersianus belongs to Sphenozamites'
- 'Spiraea belongs to Rosaceae'
- 'Spiraea andersoni belongs to Spiraea' according to Heer 1869
- 'Spiraea andersoni belongs to Spiraea'
- 'Spiraxis belongs to Plantae'
- 'Spiraxis bivalvis belongs to Spiraxis' according to Ward 1885
- 'Spiraxis bivalvis belongs to Spiraxis'
- 'Spirodela belongs to Lemnaceae'
- 'Spirodela was reranked as Lemna (Spirodela) and belongs to Lemna' according to Dawson 1875
- 'Staphidoides ovalis belongs to Staphidoides' according to Perkins 1906
- 'Staphidoides ovalis belongs to Staphidoides'
- 'Staphidoides perkinsi belongs to Staphidoides'
- 'Staphidoides venosus is replaced by Staphidoides perkinsi'
- 'Staphylea belongs to Staphyleaceae'
- 'Staphylea acuminata belongs to Staphylea' according to Lesquereux 1873
- 'Staphylea acuminata belongs to Staphylea'
- 'Staphylea fremonti belongs to Staphylea' according to Knowlton 1917
- 'Staphylea fremonti belongs to Staphylea'
- 'Staphyleaceae belongs to Sapindales'
- 'Stenopteris belongs to Pteridophyta'
- 'Stenopteris cretacea belongs to Stenopteris' according to Hollick 1902
- 'Stenopteris cretacea belongs to Stenopteris'
- 'Stenopteris virginica belongs to Stenopteris' according to Fontaine 1889
- 'Stenopteris virginica belongs to Stenopteris'
- 'Sterculia belongs to Sterculiaceae'
- 'Sterculia aperta belongs to Sterculia' according to Lesquereux 1883
- 'Sterculia aperta belongs to Sterculia'
- 'Sterculia berryana belongs to Sterculia'
- 'Sterculia berryana belongs to Sterculia' according to Knowlton 1918
- 'Sterculia cliffwoodensis belongs to Sterculia' according to Berry 1903
- 'Sterculia cliffwoodensis belongs to Sterculia'
- 'Sterculia coriacea belongs to Sterculia' according to Knowlton 1918
- 'Sterculia coriacea belongs to Sterculia'
- 'Sterculia drakei belongs to Sterculia' according to Cummins 1891
- 'Sterculia drakei is a subjective synonym of Sterculia snowii'
- 'Sterculia elegans belongs to Sterculia' according to Fontaine 1889
- 'Sterculia elegans belongs to Sterculia'
- 'Sterculia engleri belongs to Sterculia' according to Kirchner 1898
- 'Sterculia engleri belongs to Sterculia'
- 'Sterculia lineariloba belongs to Sterculia' according to Lesquereux 1874
- 'Sterculia lineariloba belongs to Sterculia'
- 'Sterculia lugubris belongs to Sterculia' according to Lesquereux 1883
- 'Sterculia lugubris belongs to Sterculia'
- 'Sterculia minima belongs to Sterculia' according to Berry 1906
- 'Sterculia minima belongs to Sterculia'
- 'Sterculia mucronata belongs to Sterculia'
- 'Sterculia mucronata belongs to Sterculia' according to Lesquereux 1891
- 'Sterculia obtusiloba belongs to Sterculia' according to Lesquereux 1883
- 'Sterculia obtusiloba is a subjective synonym of Sterculia tripartita'
- 'Sterculia prelabrusca belongs to Sterculia' according to Hollick 1906
- 'Sterculia prelabrusca belongs to Sterculia'
- 'Sterculia puryearensis belongs to Sterculia' according to Berry 1916
- 'Sterculia puryearensis belongs to Sterculia'
- 'Sterculia reticulata belongs to Sterculia' according to Lesquereux 1891
- 'Sterculia reticulata belongs to Sterculia'
- 'Sterculia rigida belongs to Sterculia' according to Lesquereux 1883
- 'Sterculia rigida belongs to Sterculia'
- 'Sterculia saportanea belongs to Sterculia' according to Knowlton 1898
- 'Sterculia saportanea belongs to Sterculia'
- 'Sterculia snowii belongs to Sterculia' according to Lesquereux 1891
- 'Sterculia snowii belongs to Sterculia'
- 'Sterculia vetustula belongs to Sterculia'
- 'Sterculiaceae belongs to Malvales'
- 'Sterculiocarpus belongs to Sterculiaceae'
- 'Sterculiocarpus eocenicus belongs to Sterculiocarpus'
- 'Sterculiocarpus sezannelloides belongs to Sterculiocarpus' according to Berry 1916
- 'Sterculiocarpus sezannelloides belongs to Sterculiocarpus'
- 'Sterculites is a subjective synonym of Sterculia'
- 'Stipa belongs to Gramineae'
- 'Stipa laminarium belongs to Stipa' according to Cockerell 1908
- 'Stipa laminarium belongs to Stipa'
- 'Strangerites obliquus belongs to Strangerites' according to Emmons 1856
- 'Strangerites obliquus is recombined as Pseudodanaeopsis obliqua' according to Fontaine 1900
- 'Strangerites obliquus is recombined as Pseudodanaeopsis obliqua'
- 'Strangerites planus belongs to Strangerites' according to Emmons 1857
- 'Strangerites planus is recombined as Pseudodanaeopsis plana' according to Fontaine 1900
- 'Strobilites belongs to Coniferales'
- 'Strobilites anceps belongs to Strobilites'
- 'Strobilites davisii belongs to Strobilites' according to Hollick and Jeffrey 1909
- 'Strobilites davisii belongs to Strobilites'
- 'Strobilites inquirendus belongs to Strobilites'
- 'Strobilites inquirendus belongs to Strobilites' according to Hollick 1897
- 'Strobilites microsporophorus belongs to Strobilites' according to Hollick and Jeffrey 1909
- 'Strobilites microsporophorus belongs to Strobilites'
- 'Strobilites perplexus belongs to Strobilites' according to Hollick 1906
- 'Strobilites perplexus belongs to Strobilites'
- 'Styracaceae belongs to Ebenales'
- 'Styrax belongs to Styracaceae'
- 'Styrax ambra belongs to Styrax' according to Unger 1865
- 'Styrax ambra belongs to Styrax'
- 'Styrax laramiense belongs to Styrax' according to Lesquereux 1888
- 'Styrax laramiense belongs to Styrax'
- 'Symphorocarpophyllum belongs to Dicotyledones'
- 'Symphorocarpophyllum albertum belongs to Symphorocarpophyllum'
- 'Symphorocarpophyllum linnaeiforme belongs to Symphorocarpophyllum' according to Dawson 1886
- 'Symphorocarpophyllum linnaeiforme belongs to Symphorocarpophyllum'
- 'Taeniopteris belongs to Marattiaceae'
- 'Taeniopteris gibbsii belongs to Taeniopteris' according to Newberry 1863
- 'Taeniopteris gibbsii is recombined as Nilsonia gibbsii' according to Hollick 1898
- 'Taeniopteris gibbsii is recombined as Nilsonia gibbsii'
- 'Taeniopteris magnifolia is recombined as Macrotaeniopteris magnifolia' according to Schimper 1869
- 'Taeniopteris magnifolia is recombined as Macrotaeniopteris magnifolia'
- 'Taeniopteris major belongs to Taeniopteris'
- 'Taeniopteris oregonensis belongs to Taeniopteris' according to Fontaine 1905
- 'Taeniopteris oregonensis belongs to Taeniopteris'
- 'Taeniopteris orovillensis belongs to Taeniopteris' according to Fontaine 1896
- 'Taeniopteris orovillensis belongs to Taeniopteris'
- 'Taeniopteris parvula belongs to Taeniopteris' according to Heer 1876
- 'Taeniopteris parvula is recombined as Nilsonia parvula' according to Fontaine 1905
- 'Taeniopteris parvula is recombined as Nilsonia parvula'
- 'Taeniopteris plumosa belongs to Taeniopteris'
- 'Taeniopteris plumosa belongs to Taeniopteris' according to Dawson 1882
- 'Taeniopteris shastensis belongs to Taeniopteris'
- 'Taeniopteris vittata belongs to Taeniopteris'
- 'Taeniopteris yorkensis belongs to Taeniopteris' according to Fontaine 1900
- 'Taeniopteris yorkensis belongs to Taeniopteris'
- 'Taonurus incertus belongs to Taonurus' according to Dawson 1882
- 'Taonurus incertus belongs to Taonurus'
- 'Tapeinidium belongs to Polypodiaceae'
- 'Taxaceae belongs to Coniferales'
- 'Taxeae belongs to Taxaceae'
- 'Taxites belongs to Taxeae'
- 'Taxites langsdorfii belongs to Taxites' according to Brongniart 1828
- 'Taxites langsdorfii is recombined as Sequoia langsdorfii' according to Heer 1855
- 'Taxites langsdorfii is recombined as Sequoia langsdorfii'
- 'Taxites microphyllus belongs to Taxites' according to Heer 1869
- 'Taxites microphyllus belongs to Taxites'
- 'Taxites olriki belongs to Taxites' according to Heer 1868
- 'Taxites olriki belongs to Taxites'
- 'Taxodieae belongs to Pinaceae'
- 'Taxodioxylon belongs to Taxodieae'
- 'Taxodioxylon credneri belongs to Taxodioxylon' according to Platen 1907
- 'Taxodioxylon credneri belongs to Taxodioxylon'
- 'Taxodium belongs to Taxodieae'
- 'Taxodium (Glyptostrobus) expansum is recombined as Glyptostrobus expansus' according to Ward 1906
- 'Taxodium (Glyptostrobus) expansum is recombined as Athrotaxopsis expansa'
- 'Taxodium (Glyptostrobus) expansum belongs to Taxodium (Glyptostrobus)' according to Fontaine 1890
- 'Taxodium brookense is recombined as Glyptostrobus brookensis' according to Fontaine 1899
- 'Glyptostrobus brookensis is a subjective synonym of Widdringtonites ramosus'
- 'Taxodium brookense belongs to Taxodium' according to Fontaine 1889
- 'Taxodium brookense is recombined as Glyptostrobus brookensis' according to Ward 1895
- 'Taxodium cuneatum belongs to Taxodium' according to Newberry 1863
- 'Taxodium cuneatum is recombined as Sequoia cuneata' according to Newberry 1898
- 'Taxodium cuneatum is recombined as Sequoia cuneata'
- 'Taxodium denticulatum belongs to Taxodium' according to Fontaine 1889
- 'Taxodium denticulatum is a subjective synonym of Sphenolepis kurriana'
- 'Taxodium europaeum belongs to Taxodium' according to Brongniart 1833
- 'Taxodium europaeum is recombined as Glyptostrobus europaeus' according to Heer 1855
- 'Taxodium europaeum is recombined as Glyptostrobus europaeus'
- 'Taxodium expansum belongs to Taxodium' according to Fontaine 1889
- 'Taxodium expansum is a subjective synonym of Sphenolepis kurriana'
- 'Taxodium fastigiatum belongs to Taxodium' according to Fontaine 1889
- 'Taxodium fastigiatum is recombined as Glyptostrobus fastigiatus' according to Ward 1895
- 'Glyptostrobus fastigiatus is a subjective synonym of Sphenolepis kurriana'
- 'Taxodium laramianum belongs to Taxodium' according to Penhallow 1904
- 'Taxodium laramianum belongs to Taxodium'
- 'Taxodium nevadensis belongs to Taxodium' according to Lesquereux 1873
- 'Taxodium nevadensis is a subjective synonym of Taxodium dubium'
- 'Taxodium occidentale belongs to Taxodium'
- 'Taxodium ramosum belongs to Taxodium' according to Fontaine 1889
- 'Taxodium ramosum is recombined as Glyptostrobus ramosus' according to Ward 1905
- 'Taxodium ramosum is recombined as Widdringtonites ramosus' according to Berry 1911
- 'Taxodium sempervirens is recombined as Sequoia sempervirens'
- 'Taxodium sempervirens belongs to Taxodium' according to Don 1824
- 'Taxodium sempervirens is recombined as Sequoia sempervirens' according to Endlicher 1847
- 'Taxodium tinajorum belongs to Taxodium' according to Heer 1871
- 'Taxodium tinajorum belongs to Taxodium'
- 'Taxodium virginicum belongs to Taxodium' according to Fontaine 1889
- 'Taxodium virginicum belongs to Taxodium'
- 'Tecoma belongs to Bignoniaceae'
- 'Tecoma preradicans belongs to Tecoma' according to Berry 1915
- 'Tecoma preradicans belongs to Tecoma'
- 'Tempskya belongs to Pteridophyta'
- 'Tempskya whitei belongs to Tempskya'
- 'Terminalia belongs to Combretaceae'
- 'Terminalia phaeocarpoides belongs to Terminalia'
- 'Terminalia wilcoxiana belongs to Terminalia' according to Berry 1916
- 'Terminalia wilcoxiana belongs to Terminalia'
- 'Ternstroemiaceae belongs to Parietales'
- 'Ternstroemites belongs to Ternstroemiaceae'
- 'Ternstroemites eoligniticus belongs to Ternstroemites'
- 'Ternstroemites lanceolatus belongs to Ternstroemites' according to Berry 1916
- 'Ternstroemites lanceolatus belongs to Ternstroemites'
- 'Ternstroemites ovatus belongs to Ternstroemites' according to Berry 1916
- 'Ternstroemites ovatus belongs to Ternstroemites'
- 'Ternstroemites precalibornensis belongs to Ternstroemites' according to Berry 1916
- 'Ternstroemites precalibornensis belongs to Ternstroemites'
- 'Tetranthera is a subjective synonym of Malapoenna'
- 'Tetranthera praecursoria belongs to Tetranthera' according to Lesquereux 1883
- 'Tetranthera praecursoria is recombined as Malapoenna praecursoria'
- 'Thalictrum belongs to Ranunculaceae'
- 'Thallophyta belongs to Plantae'
- 'Thinnfeldia belongs to Pteridophyta'
- 'Thinnfeldia fontainei belongs to Thinnfeldia' according to Berry 1903
- 'Thinnfeldia fontainei belongs to Thinnfeldia'
- 'Thinnfeldia granulata belongs to Thinnfeldia' according to Fontaine 1889
- 'Thinnfeldia granulata belongs to Thinnfeldia'
- 'Thinnfeldia lanceolata is recombined as Protophyllocladus lanceolatus' according to Berry 1903
- 'Thinnfeldia lanceolata is recombined as Protophyllocladus lanceolatus'
- 'Thinnfeldia lanceolata belongs to Thinnfeldia' according to Knowlton 1893
- 'Thinnfeldia lesquereuxiana belongs to Thinnfeldia' according to Heer 1882
- 'Thinnfeldia lesquereuxiana is a subjective synonym of Protophyllocladus subintegrifolius'
- 'Thinnfeldia marylandica belongs to Thinnfeldia' according to Fontaine 1905
- 'Thinnfeldia marylandica belongs to Thinnfeldia'
- 'Thinnfeldia montana belongs to Thinnfeldia' according to Knowlton 1898
- 'Thinnfeldia montana is a subjective synonym of Protophyllocladus polymorphus'
- 'Thinnfeldia montanensis belongs to Thinnfeldia' according to Fontaine 1897
- 'Thinnfeldia montanensis is a subjective synonym of Cladophlebis virginiensis'
- 'Thinnfeldia reticulata belongs to Thinnfeldia'
- 'Thinnfeldia reticulata belongs to Thinnfeldia' according to Fontaine 1900
- 'Thinnfeldia rotundiloba belongs to Thinnfeldia' according to Fontaine 1889
- 'Thinnfeldia rotundiloba belongs to Thinnfeldia'
- 'Thinnfeldia variabilis belongs to Thinnfeldia' according to Fontaine 1889
- 'Thinnfeldia variabilis is replaced by Thinnfeldia fontainei'
- 'Thinnfeldia variabilis belongs to Thinnfeldia' according to Fontaine 1894
- 'Thinnfeldia variabilis is recombined as Sagenopteris variabilis' according to Velenovsky 1889
- 'Thinnfeldia variabilis is recombined as Sagenopteris variabilis'
- 'Thrinax belongs to Araceae'
- 'Thrinax eocenica belongs to Thrinax'
- 'Thuites belongs to Cupressineae'
- 'Thuites alaskensis belongs to Thuites' according to Lesquereux 1882
- 'Thuites alaskensis belongs to Thuites'
- 'Thuites crassus belongs to Thuites' according to Lesquereux 1883
- 'Thuites crassus is a subjective synonym of Brachyphyllum macrocarpum'
- 'Thuites kurrianus belongs to Thuites' according to Dunker 1846
- 'Thuites kurrianus is recombined as Sphenolepis kurriana' according to Schenk 1871
- 'Thuites kurrianus is recombined as Sphenolepis kurriana'
- 'Thuites kurrianus is recombined as Sphenolepidium kurrianum' according to Heer 1881
- 'Thuites meriani belongs to Thuites' according to Heer 1873
- 'Thuites meriani belongs to Thuites'
- 'Thuja belongs to Cupressineae'
- 'Thuja garmani belongs to Thuja' according to Lesquereux 1872
- 'Thuja garmani belongs to Thuja'
- 'Thuja gracilis belongs to Thuja' according to Newberry 1868
- 'Thuja gracilis belongs to Thuja'
- 'Thuja interrupta belongs to Thuja'
- 'Thuja interrupta belongs to Thuja' according to Newberry 1868
- 'Thuja occidentalis belongs to Thuja'
- 'Thuyoxylon americanum belongs to Thuyoxylon' according to Unger 1852
- 'Thuyoxylon americanum belongs to Thuyoxylon'
- 'Thuyoxylum is corrected as Thuyoxylon and belongs to Cupressineae'
- 'Thymeleales belongs to Dicotyledones'
- 'Thyrsopteris belongs to Cyatheaceae'
- 'Thyrsopteris alata belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris alata is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris angustifolia belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris angustifolia is a subjective synonym of Onychiopsis psilotoides'
- 'Thyrsopteris angustiloba belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris angustiloba is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris bella belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris bella is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris brevifolia belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris brevifolia is recombined as Onychiopsis brevifolia' according to Berry 1911
- 'Thyrsopteris brevifolia is recombined as Onychiopsis brevifolia'
- 'Thyrsopteris brevipennis belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris brevipennis is a subjective synonym of Onychiopsis latiloba'
- 'Thyrsopteris crassinervis belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris crassinervis is a subjective synonym of Onychiopsis nervosa'
- 'Thyrsopteris crenata belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris crenata is a subjective synonym of Onychiopsis latiloba'
- 'Thyrsopteris decurrens belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris decurrens is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris densifolia belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris densifolia is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris dentata belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris dentata is a subjective synonym of Onychiopsis brevifolia'
- 'Thyrsopteris dentifolia belongs to Thyrsopteris' according to Fontaine 1899
- 'Thyrsopteris dentifolia is a subjective synonym of Onychiopsis psilotoides'
- 'Thyrsopteris distans belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris distans is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris divaricata belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris divaricata is a subjective synonym of Onychiopsis latiloba'
- 'Thyrsopteris elliptica belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris elliptica is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris heteroloba belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris heteroloba is a subjective synonym of Onychiopsis nervosa'
- 'Thyrsopteris heteromorpha belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris heteromorpha is a subjective synonym of Ruffordia goepperti'
- 'Thyrsopteris heterophylla belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris heterophylla is a subjective synonym of Onychiopsis brevifolia'
- 'Thyrsopteris inaequipinnata belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris inaequipinnata is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris insignis belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris insignis is a subjective synonym of Onychiopsis psilotoides'
- 'Thyrsopteris maakiana belongs to Thyrsopteris' according to Heer 1876
- 'Thyrsopteris maakiana is a subjective synonym of Onychiopsis nervosa'
- 'Thyrsopteris meekiana belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris meekiana is a subjective synonym of Onychiopsis nervosa'
- 'Thyrsopteris microloba belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris microloba is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris microphylla belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris microphylla is a subjective synonym of Onychiopsis psilotoides'
- 'Thyrsopteris nana belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris nana is a subjective synonym of Onychiopsis brevifolia'
- 'Thyrsopteris nervosa belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris nervosa is recombined as Onychiopsis nervosa' according to Berry 1911
- 'Thyrsopteris nervosa is recombined as Onychiopsis nervosa'
- 'Thyrsopteris obtusiloba belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris obtusiloba is a subjective synonym of Onychiopsis nervosa'
- 'Thyrsopteris pachyphylla belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris pachyphylla is a subjective synonym of Onychiopsis brevifolia'
- 'Thyrsopteris pachyrachis belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris pachyrachis is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris pecopteroides belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris pecopteroides is a subjective synonym of Onychiopsis nervosa'
- 'Thyrsopteris pinnatifida belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris pinnatifida is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris rarinervis belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris rarinervis is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris retusa belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris retusa is a subjective synonym of Onychiopsis brevifolia'
- 'Thyrsopteris rhombifolia belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris rhombifolia is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris rhombiloba belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris rhombiloba is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris sphenopteroides belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris sphenopteroides is a subjective synonym of Onychiopsis brevifolia'
- 'Thyrsopteris squarrosa belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris squarrosa is a subjective synonym of Onychiopsis brevifolia'
- 'Thyrsopteris varians belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris varians is a subjective synonym of Onychiopsis goepperti'
- 'Thyrsopteris virginica belongs to Thyrsopteris' according to Fontaine 1889
- 'Thyrsopteris virginica is a subjective synonym of Onychiopsis goepperti'
- 'Tilia belongs to Tiliaceae'
- 'Tilia alaskana belongs to Tilia' according to Heer 1869
- 'Tilia alaskana belongs to Tilia'
- 'Tilia americana belongs to Tilia'
- 'Tilia antiqua belongs to Tilia' according to Newberry 1868
- 'Tilia antiqua is recombined as Viburnum antiquum' according to Hollick 1898
- 'Tilia antiqua is recombined as Viburnum antiquum'
- 'Tilia populifolia belongs to Tilia' according to Lesquereux 1883
- 'Tilia populifolia belongs to Tilia'
- 'Tilia speciosissima belongs to Tilia'
- 'Tilia speciosissima belongs to Tilia' according to Knowlton 1918
- 'Tilia weedii belongs to Tilia' according to Knowlton 1902
- 'Tilia weedii belongs to Tilia'
- 'Tiliaceae belongs to Malvales'
- 'Tiliaephyllum dubium is recombined as Tilia dubia' according to Berry 1907
- 'Tiliaephyllum dubium is recombined as Tilia dubia'
- 'Tithymalus belongs to Euphorbiaceae'
- 'Tithymalus phenacodorum belongs to Tithymalus' according to Cockerell 1914
- 'Tithymalus phenacodorum belongs to Tithymalus'
- 'Tithymalus willistoni belongs to Tithymalus' according to Cockerell 1909
- 'Tithymalus willistoni belongs to Tithymalus'
- 'Tmesipteris belongs to Psilotaceae'
- 'Todea saportanea belongs to Todea' according to Lesquereux 1874
- 'Todea saportanea is recombined as Lomatia saportanea' according to Lesquereux 1883
- 'Todea saportanea is recombined as Lomatia saportanea'
- 'Torreya densifolia belongs to Torreya' according to Dawson 1882
- 'Torreya densifolia is recombined as Tumion densifolium' according to Knowlton 1898
- 'Torreya densifolia is recombined as Tumion densifolium'
- 'Torreya dicksonioides belongs to Torreya' according to Dawson 1882
- 'Torreya dicksonioides is recombined as Tumion dicksonioides' according to Knowlton 1898
- 'Torreya dicksonioides is recombined as Tumion dicksonioides'
- 'Torreya falcata belongs to Torreya' according to Fontaine 1889
- 'Torreya falcata is recombined as Tumion falcatum' according to Knowlton 1898
- 'Torreya falcata is recombined as Tumion falcatum'
- 'Torreya oblanceolata belongs to Torreya' according to Lesquereux 1883
- 'Torreya oblanceolata is recombined as Tumion oblanceolatum' according to Knowlton 1898
- 'Torreya oblanceolata is recombined as Tumion oblanceolatum'
- 'Torreya virginica belongs to Torreya' according to Fontaine 1889
- 'Torreya virginica is recombined as Tumion virginicum' according to Knowlton 1898
- 'Torreya virginica is recombined as Tumion virginicum'
- 'Toxylon belongs to Moraceae'
- 'Toxylon longipetiolatum belongs to Toxylon' according to Hollick 1899
- 'Toxylon longipetiolatum is recombined as Persea longipetiolata' according to Berry 1916
- 'Toxylon longipetiolatum is recombined as Persea longipetiolata'
- 'Toxylon pomiferum belongs to Toxylon' according to Rafinesque 1817
- 'Toxylon pomiferum belongs to Toxylon'
- 'Trapa belongs to Hydrocaryaceae'
- 'Trapa alabamensis belongs to Trapa' according to Berry 1914
- 'Trapa alabamensis belongs to Trapa'
- 'Trapa americana belongs to Trapa' according to Knowlton 1898
- 'Trapa americana belongs to Trapa'
- 'Trapa borealis belongs to Trapa' according to Heer 1869
- 'Trapa borealis belongs to Trapa'
- 'Trapa cuneata belongs to Trapa' according to Knowlton 1900
- 'Trapa cuneata belongs to Trapa'
- 'Trapa microphylla belongs to Trapa' according to Lesquereux 1875
- 'Trapa microphylla belongs to Trapa'
- 'Trapa occidentalis belongs to Trapa' according to Knowlton 1898
- 'Trapa occidentalis belongs to Trapa'
- 'Trapa wilcoxensis belongs to Trapa' according to Berry 1914
- 'Trapa wilcoxensis belongs to Trapa'
- 'Tricalycites major belongs to Tricalycites' according to Hollick 1904
- 'Tricalycites major belongs to Tricalycites'
- 'Tricalycites papyraceus belongs to Tricalycites'
- 'Tricarpellites acuminatus belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites acuminatus belongs to Tricarpellites'
- 'Tricarpellites alatus belongs to Tricarpellites' according to Perkins 1906
- 'Tricarpellites alatus belongs to Tricarpellites'
- 'Tricarpellites amygdaloideus belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites amygdaloideus belongs to Tricarpellites'
- 'Tricarpellites angularis belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites angularis belongs to Tricarpellites'
- 'Tricarpellites brandonianus belongs to Tricarpellites' according to Perkins 1906
- 'Tricarpellites brandonianus belongs to Tricarpellites'
- 'Tricarpellites carinatus belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites carinatus belongs to Tricarpellites'
- 'Tricarpellites castanoides belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites castanoides belongs to Tricarpellites'
- 'Tricarpellites contractus belongs to Tricarpellites'
- 'Tricarpellites contractus belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites curtus belongs to Tricarpellites'
- 'Tricarpellites daleii belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites daleii belongs to Tricarpellites'
- 'Tricarpellites elongatus belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites elongatus belongs to Tricarpellites'
- 'Tricarpellites fagoides belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites fagoides belongs to Tricarpellites'
- 'Tricarpellites hemiovalis belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites hemiovalis belongs to Tricarpellites'
- 'Tricarpellites inequalis belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites inequalis belongs to Tricarpellites'
- 'Tricarpellites lignitus belongs to Tricarpellites'
- 'Tricarpellites lignitus belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites major belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites major belongs to Tricarpellites'
- 'Tricarpellites obesus belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites obesus belongs to Tricarpellites'
- 'Tricarpellites ovalis belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites ovalis belongs to Tricarpellites'
- 'Tricarpellites pringlei belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites pringlei belongs to Tricarpellites'
- 'Tricarpellites rostratus belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites rostratus belongs to Tricarpellites'
- 'Tricarpellites rugosus belongs to Tricarpellites'
- 'Tricarpellites seelyi belongs to Tricarpellites' according to Perkins 1904
- 'Tricarpellites seelyi belongs to Tricarpellites'
- 'Tricarpellites striatus belongs to Tricarpellites' according to Newberry 1895
- 'Tricarpellites striatus belongs to Tricarpellites'
- 'Tricarpellites triangularis belongs to Tricarpellites' according to Perkins 1906
- 'Tricarpellites triangularis belongs to Tricarpellites'
- 'Trichopteris is a nomen dubium'
- 'Tsuga belongs to Abietineae'
- 'Tuberculariaceae belongs to Melanconiales'
- 'Tubiflorae belongs to Dicotyledones'
- 'Tumion belongs to Taxeae'
- 'Tumion carolinianum belongs to Tumion'
- 'Typha belongs to Typhaceae'
- 'Typha latifolia belongs to Typha'
- 'Typha lesquereuxi belongs to Typha'
- 'Typhaceae belongs to Pandanales'
- 'Tysonia is a subjective synonym of Cycadeoidea'
- 'Tysonia marylandica is recombined as Cycadeoidea marylandica' according to Capillini and Solms-Laubach 1892
- 'Tysonia marylandica is recombined as Cycadeoidea marylandica'
- 'Ulmaceae belongs to Urticales'
- 'Ulmiphyllum is a subjective synonym of Ulmophyllum'
- 'Ulmiphyllum brookense is recombined as Ulmophyllum brookense' according to Knowlton 1898
- 'Ulmiphyllum brookense is recombined as Ulmophyllum brookense'
- 'Ulmiphyllum crassinerve belongs to Ulmiphyllum' according to Fontaine 1889
- 'Ulmiphyllum crassinerve is recombined as Ulmophyllum crassinerve' according to Knowlton 1898
- 'Ulmiphyllum crassinerve is recombined as Ulmophyllum crassinerve'
- 'Ulmiphyllum tenuinerve belongs to Ulmiphyllum' according to Fontaine 1889
- 'Ulmiphyllum tenuinerve is recombined as Ulmophyllum tenuinerve' according to Knowlton 1898
- 'Ulmiphyllum tenuinerve is recombined as Ulmophyllum tenuinerve'
- 'Ulmites belongs to Ulmaceae'
- 'Ulmites pusillus belongs to Ulmites'
- 'Ulmophyllum belongs to Ulmaceae'
- 'Ulmophyllum densinerve belongs to Ulmophyllum'
- 'Ulmophyllum densinerve belongs to Ulmophyllum' according to Fontaine 1899
- 'Ulmophyllum priscum belongs to Ulmophyllum' according to Dawson 1893
- 'Ulmophyllum priscum belongs to Ulmophyllum'
- 'Ulmoxylon belongs to Ulmaceae'
- 'Ulmoxylon simrothi belongs to Ulmoxylon' according to Platen 1907
- 'Ulmoxylon simrothi belongs to Ulmoxylon'
- 'Ulmus belongs to Ulmaceae'
- 'Ulmus affinis belongs to Ulmus'
- 'Ulmus alata belongs to Ulmus' according to Michaux 1803
- 'Ulmus alata belongs to Ulmus'
- 'Ulmus americana belongs to Ulmus'
- 'Ulmus antecedens belongs to Ulmus' according to Lesquereux 1888
- 'Ulmus antecedens belongs to Ulmus'
- 'Ulmus basicordata belongs to Ulmus' according to Hollick 1904
- 'Ulmus basicordata belongs to Ulmus'
- 'Ulmus betuloides belongs to Ulmus' according to Hollick 1906
- 'Ulmus betuloides belongs to Ulmus'
- 'Ulmus braunii belongs to Ulmus' according to Heer 1856
- 'Ulmus braunii belongs to Ulmus'
- 'Ulmus brownellii belongs to Ulmus' according to Lesquereux 1883
- 'Ulmus brownellii belongs to Ulmus'
- 'Ulmus californica belongs to Ulmus'
- 'Ulmus columbiana belongs to Ulmus' according to Penhallow 1907
- 'Ulmus columbiana belongs to Ulmus'
- 'Ulmus dubia belongs to Ulmus' according to Dawson 1882
- 'Ulmus dubia belongs to Ulmus'
- 'Ulmus grandifolia belongs to Ulmus' according to Newberry 1882
- 'Ulmus grandifolia belongs to Ulmus'
- 'Ulmus hilliae belongs to Ulmus' according to Lesquereux 1883
- 'Ulmus hilliae belongs to Ulmus'
- 'Ficus irregularis is replaced by Ficus coloradensis'
- 'Ulmus irregularis belongs to Ulmus' according to Lesquereux 1871
- 'Ulmus irregularis is recombined as Ficus irregularis' according to Lesquereux 1875
- 'Ulmus minima belongs to Ulmus'
- 'Ulmus minima belongs to Ulmus' according to Ward 1885
- 'Ulmus newberryi belongs to Ulmus' according to Knowlton 1902
- 'Ulmus newberryi belongs to Ulmus'
- 'Ulmus orbicularis belongs to Ulmus' according to Ward 1885
- 'Ulmus orbicularis belongs to Ulmus'
- 'Ulmus planeroides is replaced by Ulmus wardii'
- 'Ulmus planeroides belongs to Ulmus' according to Carrière 1875
- 'Ulmus planeroides belongs to Ulmus' according to Ward 1885
- 'Ulmus plurinervia belongs to Ulmus' according to Unger 1847
- 'Ulmus plurinervia belongs to Ulmus'
- 'Ulmus praecursor belongs to Ulmus' according to Dawson 1886
- 'Ulmus praecursor belongs to Ulmus'
- 'Ulmus protoamericana belongs to Ulmus' according to Penhallow 1907
- 'Ulmus protoamericana belongs to Ulmus'
- 'Ulmus protoracemosa belongs to Ulmus' according to Penhallow 1907
- 'Ulmus protoracemosa belongs to Ulmus'
- 'Ulmus pseudoamericana belongs to Ulmus' according to Lesquereux 1883
- 'Ulmus pseudoamericana is a subjective synonym of Ulmus speciosa'
- 'Ulmus pseudofulva belongs to Ulmus'
- 'Ulmus pseudoracemosa belongs to Ulmus' according to Hollick 1906
- 'Ulmus pseudoracemosa belongs to Ulmus'
- 'Ulmus quercifolia belongs to Ulmus' according to Unger 1847
- 'Ulmus quercifolia belongs to Ulmus'
- 'Ulmus racemosa belongs to Ulmus' according to Thomas 1896
- 'Ulmus racemosa belongs to Ulmus'
- 'Ulmus rhamnifolia belongs to Ulmus' according to Ward 1885
- 'Ulmus rhamnifolia belongs to Ulmus'
- 'Ulmus sorbifolia belongs to Ulmus' according to Göppert 1852
- 'Ulmus sorbifolia belongs to Ulmus'
- 'Ulmus speciosa belongs to Ulmus' according to Newberry 1883
- 'Ulmus speciosa belongs to Ulmus'
- 'Ulmus tenuinervis belongs to Ulmus' according to Lesquereux 1873
- 'Ulmus tenuinervis belongs to Ulmus'
- 'Ulmus wardii belongs to Ulmus' according to Knowlton and Cockerell 1919
- 'Umbellales belongs to Dicotyledones'
- 'Umbelliferae belongs to Umbellales'
- 'Uredinaceae belongs to Uredinales'
- 'Uredinales belongs to Ascomycota'
- 'Urticaceae belongs to Urticales'
- 'Urticales belongs to Dicotyledones'
- 'Vacciniaceae belongs to Ericales'
- 'Vaccinium belongs to Vacciniaceae'
- 'Vaccinium alaskanum belongs to Vaccinium' according to Knowlton 1904
- 'Vaccinium alaskanum belongs to Vaccinium'
- 'Vaccinium arboreum belongs to Vaccinium' according to Marshall 1785
- 'Vaccinium arboreum belongs to Vaccinium'
- 'Vaccinium coloradense belongs to Vaccinium' according to Lesquereux 1887
- 'Vaccinium coloradense belongs to Vaccinium'
- 'Vaccinium corymbosum belongs to Vaccinium'
- 'Vaccinium dumosum belongs to Vaccinium' according to Andrews 1846
- 'Vaccinium dumosum is recombined as Gaylussacia dumosa' according to Torrey and Gray 1848
- 'Vaccinium dumosum is recombined as Gaylussacia dumosa'
- 'Vaccinium friesii belongs to Vaccinium' according to Heer 1869
- 'Vaccinium friesii belongs to Vaccinium'
- 'Vaccinium hollicki belongs to Vaccinium'
- 'Vaccinium lingustrinum is recombined as Xolisma lingustrina' according to Britton 1850
- 'Vaccinium lingustrinum is recombined as Xolisma lingustrina'
- 'Vaccinium resinosum belongs to Vaccinium' according to Aiton 1860
- 'Vaccinium resinosum is recombined as Gaylussacia resinosa' according to Torrey and Gray 1868
- 'Vaccinium resinosum is recombined as Gaylussacia resinosa'
- 'Vaccinium retigerum belongs to Vaccinium' according to Cockerell 1908
- 'Vaccinium retigerum is a subjective synonym of Dalbergia lesquereuxii'
- 'Vaccinium spathulata belongs to Vaccinium' according to Berry 1907
- 'Vaccinium spathulata belongs to Vaccinium'
- 'Vaccinium textum belongs to Vaccinium'
- 'Vaccinium textum belongs to Vaccinium' according to Heer 1916
- 'Vaccinium uliginosum belongs to Vaccinium'
- 'Vaccinophyllum belongs to Vacciniaceae'
- 'Vaccinophyllum quaestum belongs to Vaccinophyllum'
- 'Vallisneria belongs to Vallisneriaceae'
- 'Vallisneria spiralis belongs to Vallisneria'
- 'Vallisneriaceae belongs to Najadales'
- 'Vantanea belongs to Humiriaceae'
- 'Vantanea wilcoxiana belongs to Vantanea' according to Berry 1916
- 'Vantanea wilcoxiana belongs to Vantanea'
- 'Vaucheriales belongs to Phycomycetes'
- 'Verbenaceae belongs to Tubiflorae'
- 'Viborquia belongs to Mimosaceae'
- 'Viburnites belongs to Caprifoliaceae'
- 'Viburnites crassus belongs to Viburnites'
- 'Viburnites evansanus belongs to Viburnites' according to Ward 1894
- 'Viburnites evansanus belongs to Viburnites'
- 'Viburnites masoni belongs to Viburnites' according to Lesquereux 1891
- 'Viburnites masoni belongs to Viburnites'
- 'Viburnum belongs to Caprifoliaceae'
- 'Viburnum anceps belongs to Viburnum' according to Lesquereux 1878
- 'Viburnum anceps is a subjective synonym of Platanus rhomboidea'
- 'Viburnum anomalinervum belongs to Viburnum' according to Knowlton 1918
- 'Viburnum anomalinervum belongs to Viburnum'
- 'Viburnum asperum belongs to Viburnum' according to Newberry 1868
- 'Viburnum asperum belongs to Viburnum'
- 'Viburnum betulaefolium belongs to Viburnum' according to Ward 1885
- 'Viburnum betulaefolium belongs to Viburnum'
- 'Viburnum bridgetonense belongs to Viburnum' according to Britton 1892
- 'Viburnum bridgetonense belongs to Viburnum'
- 'Viburnum calgarianum belongs to Viburnum' according to Dawson 1885
- 'Viburnum calgarianum belongs to Viburnum'
- 'Viburnum castrae belongs to Viburnum' according to Knowlton and Cockerell 1919
- 'Viburnum contortum belongs to Viburnum' according to Lesquereux 1872
- 'Viburnum contortum belongs to Viburnum'
- 'Viburnum crassum belongs to Viburnum' according to Knowlton 1918
- 'Viburnum crassum belongs to Viburnum'
- 'Viburnum cuneatum belongs to Viburnum' according to Newberry 1882
- 'Viburnum cuneatum is recombined as Parrotia cuneata' according to Berry 1916
- 'Viburnum cuneatum is recombined as Parrotia cuneata'
- 'Viburnum dakotense belongs to Viburnum' according to Lesquereux 1883
- 'Viburnum dakotense belongs to Viburnum'
- 'Viburnum dentatum belongs to Viburnum'
- 'Viburnum dentoni belongs to Viburnum' according to Lesquereux 1883
- 'Viburnum dentoni belongs to Viburnum'
- 'Viburnum dichotomum belongs to Viburnum' according to Buch-Ham 1825
- 'Viburnum dichotomum belongs to Viburnum' according to Lesquereux 1872
- 'Viburnum dichotomum is replaced by Viburnum melaenum'
- 'Viburnum ellsworthianum belongs to Viburnum' according to Lesquereux 1900
- 'Viburnum ellsworthianum belongs to Viburnum'
- 'Viburnum elongatum belongs to Viburnum' according to Ward 1885
- 'Viburnum elongatum belongs to Viburnum'
- 'Viburnum erectum belongs to Viburnum'
- 'Viburnum erectum belongs to Viburnum' according to Ward 1885
- 'Viburnum finale belongs to Viburnum' according to Ward 1885
- 'Viburnum finale belongs to Viburnum'
- 'Viburnum goldianum belongs to Viburnum' according to Lesquereux 1878
- 'Viburnum goldianum belongs to Viburnum'
- 'Viburnum grandedentatum belongs to Viburnum' according to Newberry 1882
- 'Viburnum grandedentatum belongs to Viburnum'
- 'Viburnum grewiopsideum belongs to Viburnum' according to Lesquereux 1891
- 'Viburnum grewiopsideum belongs to Viburnum'
- 'Viburnum hesperium belongs to Viburnum' according to Knowlton 1918
- 'Viburnum hesperium belongs to Viburnum'
- 'Viburnum hollickii belongs to Viburnum' according to Berry 1903
- 'Viburnum hollickii belongs to Viburnum'
- 'Viburnum inaequilaterale belongs to Viburnum' according to Lesquereux 1891
- 'Viburnum inaequilaterale belongs to Viburnum'
- 'Viburnum integrifolium belongs to Viburnum'
- 'Viburnum integrifolium belongs to Viburnum' according to Newberry 1894
- 'Viburnum lakesii belongs to Viburnum' according to Lesquereux 1873
- 'Viburnum lakesii belongs to Viburnum'
- 'Viburnum lanceolatum is replaced by Viburnum castrae'
- 'Viburnum lanceolatum belongs to Viburnum' according to Hill 1868
- 'Viburnum lanceolatum belongs to Viburnum' according to Newberry 1868
- 'Viburnum lesquereuxii belongs to Viburnum' according to Ward 1891
- 'Viburnum lesquereuxii belongs to Viburnum'
- 'Viburnum limpidum belongs to Viburnum' according to Ward 1885
- 'Viburnum limpidum belongs to Viburnum'
- 'Viburnum macrodontum belongs to Viburnum' according to Ward 1885
- 'Viburnum macrodontum belongs to Viburnum'
- 'Viburnum magnum belongs to Viburnum' according to Knowlton 1918
- 'Viburnum magnum belongs to Viburnum'
- 'Viburnum marginatum is recombined as Platanus marginata'
- 'Viburnum marginatum belongs to Viburnum' according to Lesquereux 1872
- 'Viburnum marginatum is recombined as Platanus marginata' according to Heer 1883
- 'Viburnum mattawanense belongs to Viburnum' according to Berry 1904
- 'Viburnum mattawanense belongs to Viburnum'
- 'Viburnum melaenum belongs to Viburnum' according to Knowlton and Cockerell 1919
- 'Viburnum molle belongs to Viburnum' according to Michaux 1803
- 'Viburnum molle belongs to Viburnum'
- 'Viburnum montanum belongs to Viburnum' according to Knowlton 1900
- 'Viburnum montanum belongs to Viburnum'
- 'Viburnum newberryanum belongs to Viburnum' according to Ward 1885
- 'Viburnum newberryanum belongs to Viburnum'
- 'Viburnum nordenskioeldi belongs to Viburnum' according to Heer 1869
- 'Viburnum nordenskioeldi belongs to Viburnum'
- 'Viburnum nudum belongs to Viburnum'
- 'Viburnum oppositinerve belongs to Viburnum' according to Ward 1885
- 'Viburnum oppositinerve belongs to Viburnum'
- 'Viburnum ovatum belongs to Viburnum' according to Penhallow 1902
- 'Viburnum ovatum belongs to Viburnum'
- 'Viburnum oxycoccoides belongs to Viburnum' according to Dawson 1885
- 'Viburnum oxycoccoides belongs to Viburnum'
- 'Viburnum paucidentatum belongs to Viburnum' according to Newberry 1882
- 'Viburnum paucidentatum belongs to Viburnum'
- 'Viburnum perfectum belongs to Viburnum' according to Ward 1885
- 'Viburnum perfectum belongs to Viburnum'
- 'Viburnum perplexum belongs to Viburnum' according to Ward 1885
- 'Viburnum perplexum belongs to Viburnum'
- 'Viburnum platanoides belongs to Viburnum' according to Lesquereux 1874
- 'Viburnum platanoides is recombined as Platanus platanoides' according to Knowlton 1898
- 'Viburnum platanoides is recombined as Platanus platanoides'
- 'Viburnum problematicum belongs to Viburnum' according to Knowlton 1900
- 'Viburnum problematicum belongs to Viburnum'
- 'Viburnum pubescens belongs to Viburnum' according to Pursh 1875
- 'Viburnum pubescens belongs to Viburnum'
- 'Viburnum rhamnifolium belongs to Viburnum' according to Knowlton 1918
- 'Viburnum rhamnifolium belongs to Viburnum'
- 'Viburnum robustum belongs to Viburnum' according to Lesquereux 1891
- 'Viburnum robustum belongs to Viburnum'
- 'Viburnum rotundifolium belongs to Viburnum' according to Lesquereux 1874
- 'Viburnum rotundifolium belongs to Viburnum'
- 'Viburnum saskatchuense belongs to Viburnum' according to Dawson 1887
- 'Viburnum saskatchuense belongs to Viburnum'
- 'Viburnum simile belongs to Viburnum' according to Knowlton 1918
- 'Viburnum simile belongs to Viburnum'
- 'Viburnum solitarium belongs to Viburnum' according to Lesquereux 1878
- 'Viburnum solitarium belongs to Viburnum'
- 'Viburnum speciosum belongs to Viburnum' according to Knowlton 1918
- 'Viburnum speciosum belongs to Viburnum'
- 'Viburnum sphenophyllum belongs to Viburnum' according to Knowlton 1891
- 'Viburnum sphenophyllum belongs to Viburnum'
- 'Viburnum tilioides belongs to Viburnum' according to Ward 1885
- 'Viburnum tilioides is a subjective synonym of Viburnum antiquum'
- 'Viburnum vulpinum belongs to Viburnum' according to Knowlton 1916
- 'Viburnum vulpinum belongs to Viburnum'
- 'Viburnum whymperi belongs to Viburnum' according to Heer 1869
- 'Viburnum whymperi belongs to Viburnum'
- 'Viburnum woottonianum belongs to Viburnum' according to Knowlton 1918
- 'Viburnum woottonianum belongs to Viburnum'
- 'Vicia belongs to Plantae'
- 'Vitiphyllum belongs to Vitaceae'
- 'Vitiphyllum crassifolium belongs to Vitiphyllum'
- 'Vitiphyllum multifidum belongs to Vitiphyllum' according to Fontaine 1889
- 'Vitiphyllum multifidum is a subjective synonym of Cissites parvifolius'
- 'Vitiphyllum parvifolium belongs to Vitiphyllum' according to Fontaine 1889
- 'Vitiphyllum parvifolium is recombined as Cissites parvifolius' according to Berry 1912
- 'Vitiphyllum parvifolium is recombined as Cissites parvifolius'
- 'Vitis belongs to Vitaceae'
- 'Vitis aestivalis belongs to Vitis' according to Michaux 1803
- 'Vitis aestivalis belongs to Vitis'
- 'Vitis alaskana belongs to Vitis' according to Cockerell 1908
- 'Vitis alaskana belongs to Vitis'
- 'Vitis bruneri belongs to Vitis' according to Ward 1885
- 'Vitis bruneri is recombined as Ampelopsis bruneri' according to Cockerell 1908
- 'Vitis bruneri is recombined as Ampelopsis bruneri'
- 'Vitis carbonensis belongs to Vitis' according to Ward 1885
- 'Vitis carbonensis is a subjective synonym of Ampelopsis bruneri'
- 'Vitis crenata belongs to Vitis' according to Thunberg 1825
- 'Vitis crenata belongs to Vitis' according to Heer 1869
- 'Vitis crenata is replaced by Vitis heeriana'
- 'Vitis cuspidata belongs to Vitis' according to Ward 1885
- 'Vitis florissantella belongs to Vitis' according to Cockerell 1908
- 'Vitis florissantella belongs to Vitis'
- 'Vitis fragmenta belongs to Vitis' according to Knowlton 1918
- 'Vitis fragmenta belongs to Vitis'
- 'Vitis heeriana belongs to Vitis' according to Knowlton and Cockerell 1919
- 'Vitis hesperia belongs to Vitis' according to Knowlton 1916
- 'Vitis hesperia belongs to Vitis'
- 'Vitis inominata belongs to Vitis' according to Knowlton 1918
- 'Vitis inominata belongs to Vitis'
- 'Vitis islandica belongs to Vitis' according to Heer 1868
- 'Vitis islandica belongs to Vitis'
- 'Vitis leei belongs to Vitis' according to Knowlton 1918
- 'Vitis leei belongs to Vitis'
- 'Vitis olriki belongs to Vitis' according to Heer 1868
- 'Vitis olriki belongs to Vitis'
- 'Vitis platanifolia belongs to Vitis' according to Knowlton 1918
- 'Vitis platanifolia belongs to Vitis'
- 'Vitis pseudorotundifolia belongs to Vitis' according to Berry 1910
- 'Vitis pseudorotundifolia belongs to Vitis'
- 'Vitis rotundifolia belongs to Vitis' according to Newberry 1882
- 'Vitis rotundifolia is replaced by Vitis alaskana'
- 'Vitis rotundifolia belongs to Vitis' according to Michaux 1803
- 'Vitis rotundifolia belongs to Vitis'
- 'Vitis sparsa belongs to Vitis' according to Lesquereux 1878
- 'Vitis sparsa belongs to Vitis'
- 'Vitis xantholithensis belongs to Vitis' according to Ward 1885
- 'Vitis xantholithensis is recombined as Ampelopsis xantholithensis' according to Cockerell 1908
- 'Vitis xantholithensis is recombined as Ampelopsis xantholithensis'
- 'Voltzia belongs to Cupressineae'
- 'Voltzia coburgensis belongs to Voltzia'
- 'Walchia brevifolia belongs to Walchia' according to Emmons 1857
- 'Walchia brevifolia is recombined as Palissya brevifolia' according to Fontaine 1900
- 'Walchia brevifolia is recombined as Palissya brevifolia'
- 'Walchia diffusus is recombined as Palissya diffusa' according to Fontaine 1883
- 'Walchia diffusus is recombined as Palissya diffusa'
- 'Walchia gracile belongs to Walchia' according to Emmons 1857
- 'Walchia gracile is a subjective synonym of Palissya diffusa'
- 'Walchia longifolius is a subjective synonym of Palissya sphenolepis'
- 'Walchia variabilis belongs to Walchia' according to Emmons 1857
- 'Walchia variabilis is a subjective synonym of Pagiophyllum peregrinum'
- 'Weichselia belongs to Pteridophyta'
- 'Weinmannia belongs to Cunoniaceae'
- 'Weinmannia dubiosa belongs to Weinmannia' according to Cockerell 1908
- 'Weinmannia dubiosa belongs to Weinmannia'
- 'Weinmannia integrifolia belongs to Weinmannia' according to Lesquereux 1883
- 'Weinmannia integrifolia belongs to Weinmannia'
- 'Weinmannia lesquereuxi belongs to Weinmannia' according to Cockerell 1908
- 'Weinmannia lesquereuxi belongs to Weinmannia'
- 'Weinmannia obtusifolia belongs to Weinmannia' according to Lesquereux 1883
- 'Weinmannia obtusifolia belongs to Weinmannia'
- 'Weinmannia phenacophylla belongs to Weinmannia' according to Cockerell 1908
- 'Weinmannia phenacophylla is a subjective synonym of Weinmannia haydenii'
- 'Weinmannia rosaefolia belongs to Weinmannia' according to Lesquereux 1873
- 'Weinmannia rosaefolia is replaced by Weinmannia dubiosa'
- 'Weinmannia rosaefolia belongs to Weinmannia' according to Cunningham 1839
- 'Widdringtonia belongs to Cupressineae'
- 'Widdringtonia complanata belongs to Widdringtonia' according to Lesquereux 1875
- 'Widdringtonia complanata belongs to Widdringtonia'
- 'Widdringtonia linguaefolia belongs to Widdringtonia' according to Lesquereux 1883
- 'Widdringtonia linguaefolia is recombined as Sabina linguaefolia' according to Cockerell 1906
- 'Widdringtonia linguaefolia is recombined as Sabina linguaefolia'
- 'Widdringtonites belongs to Cupressineae'
- 'Widdringtonites fasciculatus belongs to Widdringtonites' according to Hollick 1906
- 'Widdringtonites fasciculatus belongs to Widdringtonites'
- 'Widdringtonites gracilis is recombined as Cyparissidium gracile'
- 'Widdringtonites gracilis belongs to Widdringtonites' according to Heer 1868
- 'Widdringtonites gracilis is recombined as Cyparissidium gracile' according to Heer 1874
- 'Widdringtonites subtilis belongs to Widdringtonites'
- 'Williamsonia belongs to Cycadaceae'
- 'Williamsonia delawarensis belongs to Williamsonia' according to Berry 1907
- 'Williamsonia delawarensis belongs to Williamsonia'
- 'Williamsonia elocata belongs to Williamsonia' according to Lesquereux 1891
- 'Williamsonia elocata belongs to Williamsonia'
- 'Williamsonia gallinacea belongs to Williamsonia' according to Ward 1905
- 'Williamsonia gallinacea belongs to Williamsonia'
- 'Williamsonia marylandica belongs to Williamsonia' according to Berry 1914
- 'Williamsonia marylandica belongs to Williamsonia'
- 'Williamsonia oregonensis belongs to Williamsonia' according to Fontaine 1905
- 'Williamsonia oregonensis belongs to Williamsonia'
- 'Williamsonia phoenicopsoides belongs to Williamsonia' according to Ward 1899
- 'Williamsonia phoenicopsoides belongs to Williamsonia'
- 'Williamsonia recentior belongs to Williamsonia'
- 'Williamsonia recentior belongs to Williamsonia' according to Dawson 1885
- 'Williamsonia riesii belongs to Williamsonia' according to Hollick 1892
- 'Williamsonia riesii belongs to Williamsonia'
- 'Williamsonia smockii belongs to Williamsonia' according to Newberry 1895
- 'Williamsonia smockii belongs to Williamsonia'
- 'Williamsonia texana belongs to Williamsonia' according to Fontaine 1893
- 'Williamsonia texana belongs to Williamsonia'
- 'Williamsonia virginiensis belongs to Williamsonia' according to Fontaine 1889
- 'Williamsonia virginiensis belongs to Williamsonia'
- 'Winchellia belongs to Berberidaceae'
- 'Winchellia triphylla belongs to Winchellia'
- 'Woodwardia belongs to Polypodiaceae'
- 'Woodwardia columbiana belongs to Woodwardia' according to Knowlton 1910
- 'Woodwardia columbiana belongs to Woodwardia'
- 'Woodwardia crenata belongs to Woodwardia' according to Knowlton 1900
- 'Woodwardia crenata belongs to Woodwardia'
- 'Woodwardia florissantia belongs to Woodwardia' according to Cockerell 1908
- 'Woodwardia florissantia belongs to Woodwardia'
- 'Woodwardia latiloba belongs to Woodwardia' according to Lesquereux 1873
- 'Woodwardia latiloba belongs to Woodwardia'
- 'Woodwardia maxonii [misspelled as Woodwardia maxoni] belongs to Woodwardia'
- 'Woodwardia preareolata belongs to Woodwardia'
- 'Woodworthia belongs to Araucariaceae'
- 'Woodworthia arizonica belongs to Woodworthia'
- 'Xanthium belongs to Plantae'
- 'Xolisma belongs to Ericaceae'
- 'Xylomites borealis belongs to Xylomites' according to Heer 1880
- 'Xylomites borealis belongs to Xylomites'
- 'Xyridaceae belongs to Xyridales'
- 'Xyridales belongs to Monocotyledones'
- 'Yorkia belongs to Monocotyledones'
- 'Yorkia gramineoides belongs to Yorkia'
- 'Yucca belongs to Dracaenaceae'
- 'Yuccites hettangensis belongs to Yuccites' according to Saporta 1870
- 'Yuccites hettangensis belongs to Yuccites'
- 'Zamia belongs to Cycadaceae'
- 'Zamia mississippiensis belongs to Zamia' according to Berry 1916
- 'Zamia mississippiensis belongs to Zamia'
- 'Zamia taxina is recombined as Ctenophyllum taxinum' according to Fontaine 1883
- 'Zamia taxina is recombined as Ctenophyllum taxinum'
- 'Zamia washingtoniana belongs to Zamia' according to Ward 1895
- 'Zamia washingtoniana is a subjective synonym of Zamites tenuinervis'
- 'Zamia wilcoxensis belongs to Zamia' according to Berry 1916
- 'Zamia wilcoxensis belongs to Zamia'
- 'Zamiopsis belongs to Cycadaceae'
- 'Zamiopsis laciniata belongs to Zamiopsis' according to Fontaine 1889
- 'Zamiopsis laciniata belongs to Zamiopsis'
- 'Zamiopsis longipennis belongs to Zamiopsis' according to Fontaine 1889
- 'Zamiopsis longipennis is a subjective synonym of Zamiopsis dentata'
- 'Zamiopsis petiolata belongs to Zamiopsis' according to Fontaine 1889
- 'Zamiopsis petiolata belongs to Zamiopsis'
- 'Zamiopsis pinnatifida is a subjective synonym of Zamiopsis dentata'
- 'Zamiostrobus belongs to Cycadaceae'
- 'Zamiostrobus emmonsi belongs to Zamiostrobus' according to Fontaine 1883
- 'Zamiostrobus emmonsi is recombined as Cycadeoidea emmonsi' according to Ward 1894
- 'Zamiostrobus emmonsi is recombined as Cycadeoidea emmonsi'
- 'Zamiostrobus mirabilis belongs to Zamiostrobus' according to Lesquereux 1875
- 'Zamiostrobus mirabilis is recombined as Clathropodium mirabile' according to Ward 1884
- 'Zamiostrobus mirabilis is recombined as Cycadeoidea mirabilis' according to Ward 1894
- 'Zamiostrobus mirabilis is recombined as Cycadeoidea mirabilis'
- 'Zamiostrobus virginiensis belongs to Zamiostrobus' according to Fontaine 1883
- 'Zamiostrobus virginiensis belongs to Zamiostrobus'
- 'Zamites belongs to Cycadaceae'
- 'Zamites was reranked as Carpolithes (Zamites) and belongs to Carpolithes' according to Dawson 1893
- 'Zamites acutipennis belongs to Zamites' according to Heer 1872
- 'Zamites acutipennis belongs to Zamites'
- 'Zamites alaskana belongs to Zamites' according to Fontaine 1888
- 'Zamites alaskana belongs to Zamites'
- 'Podozamites angustifolius is a subjective synonym of Podozamites knowltoni'
- 'Zamites angustifolius belongs to Zamites' according to Eichwald 1860
- 'Zamites angustifolius is recombined as Podozamites angustifolius' according to Schimper 1872
- 'Zamites apertus belongs to Zamites' according to Newberry 1891
- 'Zamites apertus belongs to Zamites'
- 'Zamites arcticus belongs to Zamites'
- 'Zamites arcticus belongs to Zamites' according to Göppert 1863
- 'Zamites borealis belongs to Zamites' according to Heer 1873
- 'Zamites borealis belongs to Zamites'
- 'Zamites brevifolius belongs to Zamites' according to Braun 1843
- 'Zamites brevifolius is recombined as Otozamites brevifolius' according to Newberry 1887
- 'Zamites brevifolius is recombined as Otozamites brevifolius'
- 'Zamites brevipennis belongs to Zamites' according to Heer 1899
- 'Zamites brevipennis belongs to Zamites'
- 'Zamites crassinervis belongs to Zamites' according to Fontaine 1889
- 'Zamites crassinervis belongs to Zamites'
- 'Zamites distans is recombined as Podozamites distans'
- 'Zamites distantinervis belongs to Zamites' according to Fontaine 1889
- 'Zamites distantinervis belongs to Zamites'
- 'Zamites lanceolatus is recombined as Podozamites lanceolatus'
- 'Zamites lanceolatus belongs to Zamites' according to Lindley and Hutton 1840
- 'Zamites lanceolatus is recombined as Podozamites lanceolatus' according to Braun 1843
- 'Zamites montana belongs to Zamites' according to Dawson 1885
- 'Zamites montana belongs to Zamites'
- 'Zamites montanensis belongs to Zamites' according to Fontaine 1892
- 'Zamites montanensis is recombined as Pterophyllum montanense' according to Knowlton 1907
- 'Zamites montanensis is recombined as Pterophyllum montanense'
- 'Zamites obtusifolius belongs to Zamites' according to Rogers 1843
- 'Zamites obtusifolius is recombined as Pterozamites obtusifolius' according to Emmons 1856
- 'Pterozamites obtusifolius is a subjective synonym of Ctenophyllum braunianum'
- 'Zamites occidentalis belongs to Zamites' according to Newberry 1859
- 'Zamites occidentalis belongs to Zamites'
- 'Zamites ovalis belongs to Zamites' according to Fontaine 1889
- 'Zamites ovalis is a subjective synonym of Podozamites subfalcatus'
- 'Zamites pennsylvanicus belongs to Zamites' according to Fontaine 1900
- 'Zamites pennsylvanicus belongs to Zamites'
- 'Zamites powelli belongs to Zamites' according to Fontaine 1890
- 'Zamites powelli belongs to Zamites'
- 'Zamites subfalcatus belongs to Zamites' according to Fontaine 1889
- 'Zamites subfalcatus is a subjective synonym of Zamites tenuinervis'
- 'Zamites tenuinervis belongs to Zamites' according to Fontaine 1905
- 'Zamites tenuinervis belongs to Zamites'
- 'Zamites tenuistriatus belongs to Zamites' according to Rogers 1843
- 'Zamites tenuistriatus is recombined as Podozamites tenuistriatus' according to Fontaine 1883
- 'Zamites tenuistriatus is recombined as Podozamites tenuistriatus'
- 'Zamites velderi belongs to Zamites'
- 'Zamites velderi belongs to Zamites' according to Brown 1911
- 'Zamites yorkensis belongs to Zamites' according to Fontaine 1900
- 'Zamites yorkensis belongs to Zamites'
- 'Zanthoxylum belongs to Rutaceae'
- 'Zanthoxylum diversifolium belongs to Zanthoxylum' according to Lesquereux 1878
- 'Zanthoxylum diversifolium is recombined as Fagara diversifolia' according to Cockerell 1908
- 'Zanthoxylum diversifolium is recombined as Fagara diversifolia'
- 'Zanthoxylum dubium belongs to Zanthoxylum' according to Lesquereux 1871
- 'Zanthoxylum dubium belongs to Zanthoxylum'
- 'Zanthoxylum spireaefolium belongs to Zanthoxylum' according to Lesquereux 1883
- 'Zanthoxylum spireaefolium is recombined as Fagara spireaefolia' according to Cockerell 1908
- 'Zanthoxylum spireaefolium is recombined as Fagara spireaefolia'
- 'Zingiberaceae belongs to Zingiberales'
- 'Zingiberales belongs to Monocotyledones'
- 'Zingiberites belongs to Zingiberaceae'
- 'Zingiberites dubius belongs to Zingiberites' according to Lesquereux 1878
- 'Zingiberites dubius belongs to Zingiberites'
- 'Ziziphus [misspelled as Zizyphus] belongs to Rhamnaceae'
- 'Zizyphus beckwithii belongs to Zizyphus' according to Lesquereux 1883
- 'Zizyphus beckwithii belongs to Zizyphus'
- 'Zizyphus californicus belongs to Zizyphus' according to Knowlton and Cockerell 1919
- 'Zizyphus cliffwoodensis belongs to Zizyphus' according to Berry 1907
- 'Zizyphus cliffwoodensis belongs to Zizyphus'
- 'Zizyphus dakotensis belongs to Zizyphus' according to Lesquereux 1891
- 'Zizyphus dakotensis belongs to Zizyphus'
- 'Zizyphus distortus belongs to Zizyphus' according to Lesquereux 1873
- 'Zizyphus distortus belongs to Zizyphus'
- 'Zizyphus elegans belongs to Zizyphus' according to Hollick 1894
- 'Zizyphus elegans belongs to Zizyphus'
- 'Zizyphus falcatus belongs to Zizyphus' according to Berry 1916
- 'Zizyphus falcatus belongs to Zizyphus'
- 'Zizyphus groenlandicus belongs to Zizyphus' according to Heer 1883
- 'Zizyphus groenlandicus belongs to Zizyphus'
- 'Zizyphus lamarensis belongs to Zizyphus' according to Berry 1912
- 'Zizyphus lamarensis belongs to Zizyphus'
- 'Zizyphus laurifolius belongs to Zizyphus'
- 'Zizyphus lesquereuxii belongs to Zizyphus'
- 'Zizyphus lesquereuxii belongs to Zizyphus' according to Knowlton 1898
- 'Zizyphus lewisiana belongs to Zizyphus' according to Hollick 1894
- 'Zizyphus lewisiana belongs to Zizyphus'
- 'Zizyphus longifolia belongs to Zizyphus' according to Newberry 1882
- 'Zizyphus longifolia belongs to Zizyphus'
- 'Zizyphus meekii belongs to Zizyphus' according to Lesquereux 1872
- 'Zizyphus meekii belongs to Zizyphus'
- 'Zizyphus microphyllus is replaced by Zizyphus californicus'
- 'Zizyphus oblongus belongs to Zizyphus' according to Hollick 1906
- 'Zizyphus oblongus belongs to Zizyphus'
- 'Zizyphus obtusa belongs to Zizyphus' according to Kirchner 1898
- 'Zizyphus obtusa belongs to Zizyphus'
- 'Zizyphus paliurifolius belongs to Zizyphus' according to Knowlton 1918
- 'Zizyphus paliurifolius belongs to Zizyphus'
- 'Zizyphus piperoides belongs to Zizyphus'
- 'Zizyphus serrulatus belongs to Zizyphus' according to Ward 1885
- 'Zizyphus serrulatus belongs to Zizyphus'
- 'Zizyphus townsendi belongs to Zizyphus' according to Knowlton 1894
- 'Zizyphus townsendi belongs to Zizyphus'
- 'Zonarites digitatus belongs to Zonarites' according to Brongniart 1833
- 'Zonarites digitatus belongs to Zonarites'
- 'Zostera belongs to Najadaceae'
- 'Zostera marina belongs to Zostera'