Classification of the genus Populus

G. Populus Linnaeus 1753 [poplar]
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Populus acerifolia Loddiges 1838
Populus aequalis Lesquereux 1870
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Invalid names: Populus laevigata Lesquereux 1868 [replaced]
Populus alba Linnaeus 1753
Populus alexanderi Dorf 1930
Populus amblyrhyncha Ward 1885
Populus arctica Heer 1868
Populus aristolochioides Lesquereux 1875
Populus auriculata Ward 1905
Populus balsamifera Linnaeus 1753
Populus balsamoides Göppert 1855
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Invalid names: Populus eximia Göppert 1855 [synonym]
Populus berggreni Heer 1871
Populus bonatii Léveillé 1910
Populus ciliata Wallich 1839
Populus clarkiana Hollick 1906
Populus cordata Newberry 1868
Populus cordifolia Burgsdorf 1787
Populus craspedodroma Ward 1885
Populus crassa Lesquereux 1883
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Invalid names: Diospyros cuspidata Kirchner 1898 [synonym]
Populus cretacea Knowlton 1905
Populus cuneata Newberry 1868
Populus cyclomorpha Knowlton and Cockerell 1919
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Invalid names: Populus rotundifolia Newberry 1882 [replaced]
Populus dakotana Cockerell 1906
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Invalid names: Populus cordifolia Newberry 1868 [replaced]
Populus decipiens Lesquereux 1872
Populus deltoides Marshall 1785
Populus denticulata Heer 1883
Populus douglasae Buechler et al. 2007
Populus elliptica Newberry 1868
Populus eotremuloides Knowlton 1898
Populus fairii Knowlton 1926
Populus flabellum Newberry 1863
Populus glandulifera Heer 1856
Populus grandidentata Michaux 1803
Populus grewiopsis Ward 1885
Populus harkeriana Lesquereux 1891
Populus hederoides Ward 1885
Populus heteromorpha Knowlton 1926
Populus hookeri Heer 1868
Populus hyperborea Heer 1873
Populus inaequalis Ward 1885
Populus kansaseana Lesquereux 1891
Populus knightii Knowlton 1897
Populus laevigata Aiton 1789
Populus latidentata Dawson 1885
Populus latior Braun 1835
Populus lesquereuxi Cockerell 1906
Populus leuce Rossmässler 1850
Populus leucophylla Unger 1850
Populus lindgreni Knowlton 1898
Populus litigiosa Heer 1866
Populus longior Dawson 1882
Populus meedsii Knowlton 1893
Populus melanarioides Lesquereux 1875
Populus microphylla Newberry 1868
Populus microtremuloides Knowlton 1916
Populus mutabilis Heer 1856
Populus nebrascensis Newberry 1868
Populus neomexicana Knowlton 1918
Populus neotremuloides Knowlton 1918
Populus nervosa Newberry 1868
Populus newberryi Cockerell 1906
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Invalid names: Populus acerifolia Newberry 1868 [synonym]
Populus nigra Linnaeus 1753
Populus obovata Knowlton 1900
Populus occidentalis Knowlton 1898
Populus orbicularis Newberry 1896
Populus oxyrhyncha Ward 1885
Populus pliotremuloides Axelrod 1937
Populus polymorpha Newberry 1882
Populus potomacensis Ward 1895
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Invalid names: Populus menispermoides Ward 1905 [synonym]
Populus prefremontii Axelrod 1937
Populus problematica Knowlton 1893
Populus protozaddachi Dawson 1882
Populus pseudocredneria Cockerell 1908
Populus pseudotremuloides Hollick 1906
Populus pyrifolia Kirchner 1898
Populus rectinervata Dawson 1882
Populus rhomboidea Newberry 1859
Populus ricei Fontaine 1905
Populus richardsoni Heer 1868
Populus rotundifolia Griffith 1847
Populus russelli Knowlton 1893
Populus scudderi Cockerell 1906
Populus simonii Carrière 1867
Populus smilacifolia Newberry 1868
Populus sonorensis Axelrod 1939
Populus speciosa Ward 1885
Populus stygia Heer 1873
Populus subrotunda Lesquereux 1868
Populus subwashoensis Axelrod 1956
Populus tenuinervata Lesquereux 1888
Populus tidwellii Manchester et al. 2006
Populus tremula Linnaeus 1753
Populus trichocarpa Torrey and Gray 1852
Populus trinervis Dawson 1882
Populus ungeri Lesquereux 1878
Populus vivaria Knowlton 1899
Populus wardii Knowlton 1900
Populus washingtonensis Knowlton 1926
Populus whitei Ward 1885
Populus xantholithensis Knowlton 1899
Populus zaddachi Heer 1859
Populus zhenyuanensis Liang and Zhou 2016