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 (Avena) or fescue (Festuca). 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. Species 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, Australia, New Zealand, the Americas 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 numerous species now considered better placed in other genera Avenula Danthoniastrum Duthiea Helictochloa Helictotrichon Sphenopholis