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Equisetum (horsetail)
Taxonomy
Equisetum was named by Linnaeus (1753). It is extant. It is the type genus of Equisetaceae. It was considered monophyletic by I (2016).
It was assigned to Equisetales by Lakhanpal et al. (1976) and Chandra and Tewari (1991); and to Equisetaceae by Knowlton (1899), Knowlton (1919), Knowlton (1926), Christophel (1976), Lapasha and Miller (1985), McIver and Basinger (1993), Upchurch et al. (1994), Liu et al. (1996), Mabberley (2000), Mehrotra et al. (2009) and I (2016).
It was assigned to Equisetales by Lakhanpal et al. (1976) and Chandra and Tewari (1991); and to Equisetaceae by Knowlton (1899), Knowlton (1919), Knowlton (1926), Christophel (1976), Lapasha and Miller (1985), McIver and Basinger (1993), Upchurch et al. (1994), Liu et al. (1996), Mabberley (2000), Mehrotra et al. (2009) and I (2016).
Species
E. abiquiense, E. arcticum, E. arvense, E. burchardti (syn. E. marylandicum, E. virginicum), E. canaliculatum, E. cascadensis, E. collieri, E. columnare, E. deciduum, E. florissantense, E. fluviatile, E. globulosum, E. haguei, E. haydenii, E. knowltoni, E. laevigatum, E. lesquereuxii, E. lyellii, E. magnum, E. meriani, E. mokhotlongensis, E. montanense, E. muensteri, E. newberryi (syn. E. robustum), E. oregonense (syn. E. hornii), E. parlatorii, E. perlaevigatum (syn. E. laevigatum), E. phillipsii, E. rajmahalense, E. robustum, E. rogersii (syn. Phytolithus striaticulmis, E. columnaroides, Calamites disjunctus, E. arundiniforme, Calamites arenaceus), E. scirpoides, E. similkamense, E. sylvaticum, E. texense, E. wyomingense
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1753 | Equisetum Linnaeus |
| 1899 | Equisetum Knowlton |
| 1919 | Equisetum Knowlton |
| 1926 | Equisetum Knowlton |
| 1976 | Equisetum Christophel |
| 1976 | Equisetum Lakhanpal et al. |
| 1985 | Equisetum Lapasha and Miller |
| 1991 | Equisetum Chandra and Tewari |
| 1993 | Equisetum McIver and Basinger |
| 1994 | Equisetum Upchurch et al. |
| 1996 | Equisetum Liu et al. |
| 2000 | Equisetum Mabberley |
| 2009 | Equisetum Mehrotra et al. |
| 2016 | Equisetum I |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. Equisetum Linnaeus 1753 [horsetail]
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†Equisetum abiquiense Fontaine 1890
†Equisetum arcticum Heer 1866
Equisetum arvense Linnaeus 1753
†Equisetum burchardti Dunker 1846
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Invalid names: Equisetum marylandicum Fontaine 1889 [synonym], Equisetum virginicum Fontaine 1889 [synonym]
†Equisetum canaliculatum Knowlton 1899
†Equisetum cascadensis Lapasha and Miller 1985
†Equisetum collieri Knowlton 1914
†Equisetum columnare Brongniart 1828
†Equisetum deciduum Knowlton 1899
†Equisetum florissantense Cockerell 1915
Equisetum fluviatile Linnaeus 1753
†Equisetum globulosum Lesquereux 1882
†Equisetum haguei Knowlton 1899
†Equisetum haydenii Lesquereux 1871
†Equisetum knowltoni Fontaine 1890
†Equisetum laevigatum Braun 1867
†Equisetum lesquereuxii Knowlton 1898
†Equisetum lyellii Mantell
†Equisetum magnum Hickey 1977
†Equisetum meriani Brongniart 1828
†Equisetum mokhotlongensis Ellenberger 1970
†Equisetum montanense Fontaine 1898
†Equisetum muensteri Sternberg 1833
†Equisetum newberryi Knowlton and Cockerell 1919
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Invalid names: Equisetum robustum Newberry 1863 [replaced]
†Equisetum parlatorii Heer 1855
†Equisetum perlaevigatum Cockerell 1889
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Invalid names: Equisetum laevigatum Lesquereux 1873 [synonym]
†Equisetum phillipsii Dunker 1843
†Equisetum rajmahalense Oldham and Morris 1863
†Equisetum robustum Braun 1844
†Equisetum rogersii Bunbury 1851
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Invalid names: Calamites arenaceus Emmons 1856 [synonym], Calamites disjunctus Emmons 1856 [synonym], Equisetum arundiniforme Rogers 1843 [synonym], Equisetum columnaroides Emmons 1856 [synonym], Phytolithus striaticulmis Martin 1809 [synonym]
Equisetum scirpoides Michaux 1803
†Equisetum similkamense Dawson 1878
Equisetum sylvaticum Linnaeus 1753
†Equisetum texense Fontaine 1893
†Equisetum wyomingense Lesquereux 1873
Diagnosis
No diagnoses are available