Arrhenatherum
{{Short description|Genus of grasses}}
{{Automatic taxobox
|image = Arrhenatherum elatius inflorescence.jpg
|image_caption = Arrhenatherum elatius
|display_parents = 4
|taxon = Arrhenatherum
|authority = P.Beauv.
|type_species = Arrhenatherum avenaceum
|type_species_authority = P.Beauv. ex Boiss.lectotype designated by L.K. Pfeiffer, Nom. 1: 274 (1872)[http://www.tropicos.org/Name/40019924 Tropicos, Arrhenatherum P. Beauv.]
|synonyms =
- Thorea Rouy 1913, illegitimate homonym not Bory 1808 (Rhodophyta) nor Briq. 1902 (Apiaceae)
- Pseudarrhenatherum Rouy
- Thoreochloa Holub
}}
Arrhenatherum, commonly called oat-grass or button-grass, is a genus of Eurasian and North African plants in the grass family.{{cite web|url= http://delta-intkey.com/grass/www/arrhenat.htm|title=The Grass Genera of the World: Arrhenatherum |access-date=2009-08-19 |author=Watson L, Dallwitz MJ. |year=2008 |work=The Grass Genera of the World }}[https://www.biodiversitylibrary.org/page/394134#page/139/mode/1up Palisot de Beauvois, Ambroise Marie François Joseph. 1812. Essai d'une Nouvelle Agrostographie 55-56] descriptions in Latin, commentary in French[https://www.biodiversitylibrary.org/page/394134#page/294/mode/1up Palisot de Beauvois, Ambroise Marie François Joseph. 1812. Essai d'une Nouvelle Agrostographie plate XI (11), figure V (5) at lower left] line drawings of Arrhenatherum avenaceum[http://luirig.altervista.org/flora/taxa/floraspecie.php?genere=Arrhenatherum Altervista Flora Italiana genere Arrhenatherum]
Description
Wild forms can resemble wild oat (Avena) or fescue (Festuca). Oat-grasses are very common perennials with yellowish roots. The shining stems grow to a height of {{convert|1.80|m|ft|abbr=on|0}},Streeter D, Hart-Davies C, Hardcastle A, Cole F, Harper L. 2009. Collins Flower Guide. Harper Collins {{ISBN|9-78-000718389-0}} but die off in winter. The leaves are hairless with blunt ligules. The inflorescence is a panicle with two-flowered bisexual spikelets.Valdes, B. & H. Scholz. 2006. The Euro+Med treatment of Gramineae - a generic synopsis and some new names. Willdenowia 36(2): 657–669
; Species[http://www.theplantlist.org/tpl1.1/search?q=Arrhenatherum The Plant List search for Arrhenatherum]
- Arrhenatherum album - tall oat-grass - Mediterranean from Portugal to Cyprus
- Arrhenatherum calderae - Tenerife in Canary Islands
- Arrhenatherum elatius - false oat-grass, tall oat-grass, tall meadow oat - Eurasia + North Africa from Iceland to Canary Islands + Kazakhstan; naturalized in East Asia,[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=102660 Flora of China Vol. 22 Page 322 燕麦草属 yan mai cao shu Arrhenatherum P. Beauvois] Australia,[http://bie.ala.org.au/species/urn:lsid:biodiversity.org.au:apni.taxon:391840 Atlas of Living Australia, Oatgrass, Arrhenatherum elatius (L.) P.Beauv. ex J.Presl & C.Presl] New Zealand, the Americas[http://bonap.net/MapGallery/County/Arrhenatherum%20elatius.png Biota of North America Program 2013 county distribution map]Rosengurtt, B., B. R. A. Maffei & P. I. Artucio. 1970. Gramíneas Uruguayas [i–vii], 1–489. Universidad de la República, Montevideo
- Arrhenatherum kotschyii - Turkey, Caucasus, Syria, Lebanon, Palestine, Jordan, Iraq, Iran, Afghanistan
- Arrhenatherum longifolium - France, Spain, Portugal, Morocco
- Arrhennatherum palaestinum - eastern Mediterranean from Greece to Iraq
- Arrhenatherum pallens - Portugal
; formerly included{{cite web|url=http://apps.kew.org/wcsp/namedetail.do?name_id=451084|title=World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew|publisher=}}
numerous species now considered better placed in other genera Avenula Danthoniastrum Duthiea Helictochloa Helictotrichon Sphenopholis
See also
References
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