''Achnatherum'' is a
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
flowering plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...
s in the grass family,
Poaceae
Poaceae ( ), also called Gramineae ( ), is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos, the grasses of natural grassland and species cultivate ...
. It includes 20 species of
needlegrass native to temperate Eurasia and North Africa.
the Americas
The Americas, sometimes collectively called America, are a landmass comprising the totality of North America and South America.'' Webster's New World College Dictionary'', 2010 by Wiley Publishing, Inc., Cleveland, Ohio. When viewed as a sin ...
into other genera.[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]
Species
20 species are accepted by Plants of the World Online
Plants of the World Online (POWO) is an online taxonomic database published by the Royal Botanic Gardens, Kew.
History
Following the Convention on Biological Diversity, the Royal Botanic Gardens in Kew launched Plants of the World Online i ...
as of October 2024:[
]
Unplaced species
* '' Achnatherum roshevitzii'' ( unplaced) - Roshevich's achnatherum
Formerly placed here
Species previously included in ''Achnatherum'':
* '' Amelichloa brachychaeta'' (as ''Achnatherum brachychaetum'' ) - punagrass
* '' Amelichloa caudata'' (as ''Achnatherum caudatum'' ) - Chilean ricegrass
* '' Amelichloa clandestina'' (as ''Achnatherum clandestinum'' ) - Mexican ricegrass
* '' Barkworthia stillmanii'' (as ''Achnatherum stillmanii'' ) - Stillman's needlegrass
* ''Eriocoma arida
''Eriocoma arida'' is a species of Poaceae, grass known by the common name Mormon needlegrass. It is native to the southwestern United States and northeastern Mexico.
Description
''Eriocoma arida'' is a tuft-forming perennial bunchgrass without ...
'' (as ''Achnatherum aridum'' ) - Mormon needlegrass
* '' Eriocoma × bloomeri'' (as ''Achnatherum × bloomeri'' ) - Bloomer's ricegrass
* '' Eriocoma contracta'' (as ''Achnatherum contractum'' ) - contracted ricegrass
* '' Eriocoma coronata'' (as ''Achnatherum coronatum'' ) - crested needlegrass
* '' Eriocoma curvifolia'' (as ''Achnatherum curvifolium'' ) - Guadalupe ricegrass
* '' Eriocoma hymenoides'' (as ''Achnatherum hymenoides'' ) - Indian ricegrass
* '' Eriocoma hendersonii'' (as ''Achnatherum hendersonii'' ) - Henderson's needlegrass
* '' Eriocoma latiglumis'' (as ''Achnatherum latiglume'' ) - wide-glumed needlegrass
* '' Eriocoma lemmonii'' (''Achnatherum lemmonii'' ) - Lemmon's needlegrass
* '' Eriocoma lettermanii'' (as ''Achnatherum lettermanii'' ) - Letterman's needlegrass
* '' Eriocoma lobata'' (as ''Achnatherum lobatum'' ) - lobed needlegrass
* '' Eriocoma nelsonii'' (as ''Achnatherum nelsonii'' ) - Nelson's needlegrass, Dore's needlegrass
* '' Eriocoma nevadensis'' (as ''Achnatherum nevadense'' ) - Nevada needlegrass
* '' Eriocoma occidentalis'' (as ''Achnatherum occidentale'' ) - western needlegrass
* '' Eriocoma parishii'' (as ''Achnatherum parishii'' ) - Parish's needlegrass
* '' Eriocoma perplexa'' (as ''Achnatherum perplexum'' ) - perplexing needlegrass
* '' Eriocoma pinetorum'' (as ''Achnatherum pinetorum'' ) - pinewoods needlegrass
* '' Eriocoma richardsonii'' (as ''Achnatherum richardsonii'' ) - Richardson's needlegrass
* '' Eriocoma robusta'' (as ''Achnatherum robustum'' ) - sleepygrass
* '' Eriocoma scribneri'' (as ''Achnatherum scribneri'' ) - Scribner needlegrass
* '' Eriocoma thurberiana'' (as ''Achnatherum thurberianum'' ) - Thurber's needlegrass
* '' Eriocoma swallenii'' (as ''Achnatherum swallenii'' ) - Swallen's needlegrass
* '' Eriocoma webberi'' (as ''Achnatherum webberi'' ) - Webber needlegrass
*'' Neotrinia splendens'' (Trin.) M.Nobis, P.D.Gudkova & A.Nowak (as ''Achnatherum splendens'' (Trin.) Nevsky)
* '' Pappostipa speciosa'' (as ''Achnatherum speciosum'' ) - desert needlegrass
* '' Pentameris pallida'' (as ''Achnatherum capense'' )
* '' Ptilagrostis duthiei'' (as ''Achnatherum duthiei'' )
* '' Pseudoeriocoma acuta'' (as ''Achnatherum acutum'' )
* '' Pseudoeriocoma editorum'' (as ''Achnatherum editorum'' )
* '' Pseudoeriocoma eminens'' (as ''Achnatherum eminens'' ) - southwestern needlegrass
* '' Thorneochloa diegoensis'' (as ''Achnatherum diegoense'' ) - San Diego needlegrass
* '' Timouria conferta'' (as ''Achnatherum caragana'' )
References
* ''CRC World Dictionary of Grasses - Common Names, Scientific Names, Eponyms, Synonyms, and Etymology - Volume I (A - D)'', by Umberto Quattrocchi,
External links
USDA Plants Profile for ''Achnatherum'' speciesHerbarium.usu.edu: ''Achnatherum'' Genus key
{{Authority control
Poaceae genera
Flora of the Palearctic realm
Taxa described in 1812
Taxa named by Palisot de Beauvois