Arrhenatherum

Arrhenatherum
tall oatgrass (Arrhenatherum elatius)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Pooideae
Supertribe: Poodae
Tribe: Poeae
Subtribe: Aveninae
Genus: Arrhenatherum
P.Beauv.
Type species
Arrhenatherum avenaceum
Synonyms
  • Thorea Rouy 1913, illegitimate homonym not Bory 1808 (Rhodophyta) nor Briq. 1902 (Apiaceae)
  • Pseudarrhenatherum Rouy
  • Thoreochloa Holub

Arrhenatherum, commonly called oatgrass 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). 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.

Species
  • 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, 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 suited to other genera: Avenula Danthoniastrum Duthiea Helictochloa Helictotrichon Sphenopholis

See also


This page was last updated at 2023-08-13 08:01 UTC. Update now. View original page.

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