Achnatherum

Achnatherum
Achnatherum parishii
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Pooideae
Supertribe: Stipodae
Tribe: Stipeae
Genus: Achnatherum
P. Beauv.
Species

about 20 species, see text

Synonyms[1]
  • Aristella Bertol.
  • Lasiagrostis Link, nom. superfl.

Achnatherum is a genus of flowering plants in the grass family, Poaceae. It includes 20 species of needlegrass native to temperate Eurasia and North Africa.[1][2] Several needlegrass species have been switched between Achnatherum and genus Stipa; taxonomy between the two closely related genera is still uncertain. In 2019 Peterson et al. reorganized the genera in tribe Stipeae based on molecular DNA studies, and placed the species from the Americas into other genera.[3]

Species

20 species are accepted by Plants of the World Online as of October 2024:[1]

Unplaced species

Formerly placed here

Main article: Stipeae

Species previously included in Achnatherum:

  • Amelichloa brachychaeta (Godr.) Arriaga & Barkworth (as Achnatherum brachychaetum (Godr.) Barkworth) - punagrass
  • Amelichloa caudata (Trin.) Arriaga & Barkworth (as Achnatherum caudatum (Trin.) S.L.W.Jacobs & J.Everett) - Chilean ricegrass
  • Amelichloa clandestina (Hack.) Arriaga & Barkworth (as Achnatherum clandestinum (Hack.) Barkworth) - Mexican ricegrass
  • Barkworthia stillmanii (Bol.) Romasch., P.M.Peterson & Soreng (as Achnatherum stillmanii (Bol.) Barkworth) - Stillman's needlegrass
  • Eriocoma arida (M.E.Jones) Romasch. (as Achnatherum aridum (M.E.Jones) Barkworth) - Mormon needlegrass
  • Eriocoma × bloomeri (Bol.) Romasch. (as Achnatherum × bloomeri (Boland.) Barkworth) - Bloomer's ricegrass
  • Eriocoma contracta (B.L.Johnson) Romasch. (as Achnatherum contractum (B.L. Johnson) Barkworth) - contracted ricegrass
  • Eriocoma coronata (Thurb.) Romasch. (as Achnatherum coronatum (Thurb.) Barkworth) - crested needlegrass
  • Eriocoma curvifolia (Swallen) Romasch. (as Achnatherum curvifolium (Swallen) Barkworth) - Guadalupe ricegrass
  • Eriocoma hymenoides (Roem. & Schult.) Rydb. (as Achnatherum hymenoides (Roem. & Schult.) Barkworth) - Indian ricegrass
  • Eriocoma hendersonii (Vasey) Romasch. (as Achnatherum hendersonii (Vasey) Barkworth) - Henderson's needlegrass
  • Eriocoma latiglumis (Swallen) Romasch. (as Achnatherum latiglume (Swallen) Barkworth) - wide-glumed needlegrass
  • Eriocoma lemmonii (Vasey) Romasch. (Achnatherum lemmonii (Vasey) Barkworth) - Lemmon's needlegrass
  • Eriocoma lettermanii (Vasey) Romasch. (as Achnatherum lettermanii (Vasey) Barkworth) - Letterman's needlegrass
  • Eriocoma lobata (Swallen) Romasch. (as Achnatherum lobatum (Swallen) Barkworth) - lobed needlegrass
  • Eriocoma nelsonii (Scribn.) Romasch. (as Achnatherum nelsonii (Scribn.) Barkworth) - Nelson's needlegrass, Dore's needlegrass
  • Eriocoma nevadensis (B.L.Johnson) Romasch. (as Achnatherum nevadense (B.L. Johnson) Barkworth) - Nevada needlegrass
  • Eriocoma occidentalis (Thurb. ex S.Watson) Romasch. (as Achnatherum occidentale (Thurb.) Barkworth) - western needlegrass
  • Eriocoma parishii (Vasey) Romasch. (as Achnatherum parishii (Vasey) Barkworth) - Parish's needlegrass
  • Eriocoma perplexa (Hoge & Barkworth) Romasch. (as Achnatherum perplexum Hoge & Barkworth) - perplexing needlegrass
  • Eriocoma pinetorum (M.E.Jones) Romasch. (as Achnatherum pinetorum (M.E. Jones) Barkworth) - pinewoods needlegrass
  • Eriocoma richardsonii (Link) Romasch. (as Achnatherum richardsonii (Link) Barkworth) - Richardson's needlegrass
  • Eriocoma robusta (Vasey) Romasch. (as Achnatherum robustum (Vasey) Barkworth) - sleepygrass
  • Eriocoma scribneri (Vasey) Romasch. (as Achnatherum scribneri (Vasey) Barkworth) - Scribner needlegrass
  • Eriocoma thurberiana (Piper) Romasch. (as Achnatherum thurberianum (Piper) Barkworth) - Thurber's needlegrass
  • Eriocoma swallenii (C.L.Hitchc. & Spellenb.) Romasch. (as Achnatherum swallenii (C.L. Hitchc. & Spellenb.) Barkworth) - Swallen's needlegrass
  • Eriocoma webberi Thurb. (as Achnatherum webberi (Thurb.) Barkworth) - Webber needlegrass
  • Neotrinia splendens (Trin.) M.Nobis, P.D.Gudkova & A.Nowak (as Achnatherum splendens (Trin.) Nevsky)
  • Pappostipa speciosa (Trin. & Rupr.) Romasch. (as Achnatherum speciosum Trin. & Rupr.) - desert needlegrass
  • Pentameris pallida (Thunb.) Galley & H.P.Linder (as Achnatherum capense (L.) P.Beauv.)
  • Ptilagrostis duthiei (Hook.f.) M.Nobis & P.D.Gudkova (as Achnatherum duthiei (Hook.f.) P.C.Kuo & S.L.Lu)
  • Pseudoeriocoma acuta (Swallen) Romasch. (as Achnatherum acutum (Swallen) Valdés-Reyna & Barkworth)
  • Pseudoeriocoma editorum (E.Fourn.) Romasch. (as Achnatherum editorum (E.Fourn.) Valdés-Reyna & Barkworth)
  • Pseudoeriocoma eminens (Cav.) Romasch. (as Achnatherum eminens (Cav.) Barkworth) - southwestern needlegrass
  • Thorneochloa diegoensis (Swallen) Romasch. (as Achnatherum diegoense (Swallen) Barkworth) - San Diego needlegrass
  • Timouria conferta (Poir.) Sennikov (as Achnatherum caragana (Trin.) Nevski)

References

  1. ^ a b c "Achnatherum P.Beauv". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 27 October 2024.
  2. ^ Watson L, Dallwitz MJ. (2008). "The grass genera of the world: descriptions, illustrations, identification, and information retrieval; including synonyms, morphology, anatomy, physiology, phytochemistry, cytology, classification, pathogens, world and local distribution, and references". The Grass Genera of the World. Archived from the original on 2008-10-14. Retrieved 2009-08-19.
  3. ^ Peterson PM, Romaschenko K, Soreng RJ, Valdés Reyna J (2019) A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, × Eriosella, Pseudoeriocoma, Ptilagrostiella, and Thorneochloa. PhytoKeys 126: 89-125. https://doi.org/10.3897/phytokeys.126.34096