Arrhenatherum
Arrhenatherum, commonly called oat-grass or button-grass, is a genus of Eurasian and North African plants in the grass family.
Description
Wild forms can resemble wild oat or fescue. Oat-grasses are very common perennials with yellowish roots. The shining stems grow to a height of, but die off in winter. The leaves are hairless with blunt ligules. The inflorescence is a panicle with two-flowered bisexual spikelets.; SpeciesArrhenatherum album - tall oat-grass - Mediterranean from Portugal to CyprusArrhenatherum calderae - Tenerife in Canary IslandsArrhenatherum elatius - false oat-grass, tall oat-grass, tall meadow oat - Eurasia + North Africa from Iceland to Canary Islands + Kazakhstan; naturalized in East Asia, Australia, New Zealand, the AmericasArrhenatherum kotschyii - Turkey, Caucasus, Syria, Lebanon, Palestine, Jordan, Iraq, Iran, AfghanistanArrhenatherum longifolium - France, Spain, Portugal, MoroccoArrhennatherum palaestinum - eastern Mediterranean from Greece to IraqArrhenatherum pallens - Portugal
; formerly included
numerous species now considered better placed in other genera ''Avenula Danthoniastrum Duthiea Helictochloa Helictotrichon Sphenopholis''