Superregnum: Eukaryota
Regnum: Plantae
Divisio: Tracheophyta
Divisio: Pteridophyta
Classis: Polypodiopsida
Ordo: Polypodiales
Familia: Pteridaceae
Subfamilia: Cheilanthoideae
Genus: Hemionitis
Species: H. levyi – H. palmata – H. pinnatifida – H. rufa – H. tomentosa – H. umbrosa
Nothospecies: H. × smithii
Name
Hemionitis L., Sp. Pl. 2: 1077 (1753); Gen. Pl., ed. 5: 485 (1754).
Lectotype species: Hemionitis palmata L. (designated by Kaulfuss, Enum. Filicum 68, 198 (1824)).
Synonyms
Heterotypic
Gymnogramma [infragen.unranked] Ampelogramma J.Sm., Ferns Brit. Foreign (ed. 1) 284 (1866).
Hemionitis [infragen.unranked] Cardinitis J.Sm., Hist. Fil. 151 (1875).
Gymnogramma sect. Definitifolium Hieron., Bot. Jahrb. Syst. 34(4): 479 (1904).
Dictyogramme Fée, Mém. Soc. Mus. Hist. Nat. Strasbourg 4(1): 202 (1850).
Gymnogramma Desv., Mag. Neuesten Entdeck. Gesammten Naturk. Ges. Naturf. Freunde Berlin 5: 304 (1811), nom. illeg.
Gymnopteris Bernh., Jour. Bot. (Schrader) 1799(1): 297 (1799).
Neurogramma Link, Fil. Spec. 138. (1841), NS
Schizogramma Link, Fil. Spec. 136. (1841).
References
Primary references
Linnaeus, C. 1753. Species Plantarum. Tomus II: 1077. Reference page.
Linnaeus, C. 1754. Genera Plantarum, ed. 5: 485. Reference page.
Links
Hassler, M. 2021. Hemionitis. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2021. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2021 Feb 4. Reference page.
Govaerts, R. et al. 2021. Hemionitis in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2021 Feb 4. Reference page.
Tropicos.org 2021. Hemionitis. Missouri Botanical Garden. Published online. Accessed: 4 Feb 2021.
International Plant Names Index. 2021. Hemionitis. Published online. Accessed: 4 Feb 2021.
Vernacular names
中文: 泽泻蕨属
Hemionitis is a genus of ferns in the subfamily Cheilanthoideae of the family Pteridaceae.[1] Its circumscription varies greatly in different systems of fern classification. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it was one of more than 20 genera in the subfamily Cheilanthoideae, and was said to have five species.[1] Other sources treat it as the only genus in the subfamily, and so accept about 450 species.[2] With the restricted circumscription, species are native to tropical America.[1]
Taxonomy
See also: Cheilanthoideae § Genera
The genus Hemionitis was first described by Carl Linnaeus in 1753.[3] The genus name is pre-Linnaean, being used for example in the Hortus Cliffortianus,[4] and derives from the Greek word ἡμίονος (hemionos), meaning 'mule', referring to the belief that the plants were sterile.[5] (Linnaeus used the same word in the name "Asplenium hemionitis".)
The division of the subfamily Cheilanthoideae into genera varies greatly between sources as of January 2020. Christenhusz et al. (2011), the Pteridophyte Phylogeny Group classification of 2016 (PPG I), and the Checklist of Ferns and Lycophytes of the World divide the subfamily into 20 or more genera, of which one is Hemionitis sensu stricto.[6][1][7] On the other hand, Christenhusz et al. (2018) and Plants of the World Online use Hemionitis sensu lato as a catch-all genus for the subfamily, resulting in about 450 species.[8][2]
Species
Using the PPG I approach, as of January 2020, the Checklist of Ferns and Lycophytes of the World accepted the following species (and one hybrid) in Hemionitis sensu stricto. All are native to tropical America.[7]
Hemionitis levyi E.Fourn.
Hemionitis palmata L.
Hemionitis pinnatifida Baker
Hemionitis rufa (L.) Sw.
Hemionitis tomentosa (Lam.) Raddi
Hemionitis umbrosa R.Y.Hirai & J.Prado
Hemionitis × smithii (Trevis.) C.Chr. = H. palmata × H. rufa
References
PPG I (2016), "A community-derived classification for extant lycophytes and ferns", Journal of Systematics and Evolution, 54 (6): 563–603, doi:10.1111/jse.12229, S2CID 39980610
"Hemionitis L.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2020-01-06
"Hemionitis L.", The International Plant Names Index, retrieved 2020-01-06
Linnaeus, Carl (1753), "Hemionitis", Species Plantarum 2, p. 1077, retrieved 2020-01-06
Hyam, R. & Pankhurst, R.J. (1995), Plants and their names : a concise dictionary, Oxford: Oxford University Press, p. 235, ISBN 978-0-19-866189-4
Christenhusz, Maarten; Zhang, Xian-Chun & Schneider, Harald (2011), "A linear sequence of extant families and genera of lycophytes and ferns", Phytotaxa, 19: 7–54, doi:10.11646/phytotaxa.19.1.2, retrieved 2013-08-11
Hassler, Michael & Schmitt, Bernd (January 2020). "Hemionitis". Checklist of Ferns and Lycophytes of the World. 8.20. Retrieved 2020-01-02.
Christenhusz, M.J.M.; Fay, M.F. & Byng, J.W., eds. (2018), "GLOVAP nomenclature. Part 1", The Global Flora : A Practical Flora to Vascular Plant Species of the World, 4: 1–155
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