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 1.80 m, 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

numerous species now considered better placed in other genera Avenula Danthoniastrum Duthiea Helictochloa Helictotrichon Sphenopholis
 * formerly included