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''Arrhenatherum'', commonly called oatgrass or button-grass, is a genus of Eurasian and North African plants in grass family.〔(Palisot de Beauvois, Ambroise Marie François Joseph. 1812. Essai d'une Nouvelle Agrostographie 55-56 ) descriptions in Latin, commentary in French〕〔(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'' 〕〔(Altervista Flora Italiana genere ''Arrhenatherum'' )〕 ==Description== Wild forms can resemble wild oat (''Avena'') or fescue (''Festuca''). Oatgrasses are very common perennials with yellowish roots. The shining stems grow to a height of 1.5 meters, 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〔〔(The Plant List search for ''Arrhenatherum'' )〕 # ''Arrhenatherum album'' - tall oatgrass - Mediterranean from Portugal to Cyprus # ''Arrhenatherum calderae'' - Tenerife in Canary Islands # ''Arrhenatherum elatius'' - false oatgrass, tall oatgrass, tall meadow oat - Eurasia + North Africa from Iceland to Canary Islands + Kazakhstan; naturalized in East Asia,〔(Flora of China Vol. 22 Page 322 燕麦草属 yan mai cao shu ''Arrhenatherum'' P. Beauvois )〕 Australia,〔(Atlas of Living Australia, Oatgrass, ''Arrhenatherum elatius'' (L.) P.Beauv. ex J.Presl & C.Presl )〕 New Zealand, the Americas〔(Biota of North America Program 2013 county distribution map )〕〔Rosengurtt, B., B. R. A. Maffei & P. I. Artucio. 1970. Gramíneas Uruguayas (), 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〔http://apps.kew.org/wcsp/namedetail.do?name_id=451084〕 numerous species now considered better suited to other genera: ''Avenula Danthoniastrum Duthiea Helictochloa Helictotrichon Sphenopholis'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Arrhenatherum」の詳細全文を読む スポンサード リンク
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