Arrhenatherum



















































oatgrass
button-grass

Arrhenatherum elatius 235.jpg

tall oatgrass (Arrhenatherum elatius)

Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Monocots
(unranked):
Commelinids
Order:
Poales
Family:
Poaceae
Tribe:
Poeae
Subtribe:
Aveninae
Genus:
Arrhenatherum


P.Beauv.

Type species

Arrhenatherum avenaceum

P.Beauv. ex Boiss.[1][2]


Synonyms[3]



  • 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 grass family.[4][5][6][7]



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.[8]


Species[3][9]



  1. Arrhenatherum album - tall oatgrass - Mediterranean from Portugal to Cyprus


  2. Arrhenatherum calderae - Tenerife in Canary Islands


  3. Arrhenatherum elatius - false oatgrass, tall oatgrass, tall meadow oat - Eurasia + North Africa from Iceland to Canary Islands + Kazakhstan; naturalized in East Asia,[10] Australia,[11] New Zealand, the Americas[12][13]


  4. Arrhenatherum kotschyii - Turkey, Caucasus, Syria, Lebanon, Palestine, Jordan, Iraq, Iran, Afghanistan


  5. Arrhenatherum longifolium - France, Spain, Portugal, Morocco


  6. Arrhennatherum palaestinum - eastern Mediterranean from Greece to Iraq


  7. Arrhenatherum pallens - Portugal


formerly included[3]

numerous species now considered better suited to other genera: Avenula Danthoniastrum Duthiea Helictochloa Helictotrichon Sphenopholis



See also


  • List of Poaceae genera


References





  1. ^ lectotype designated by L.K. Pfeiffer, Nom. 1: 274 (1872)


  2. ^ Tropicos, Arrhenatherum P. Beauv.


  3. ^ abc "World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew"..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}


  4. ^ Watson L, Dallwitz MJ. (2008). "The Grass Genera of the World: Arrhenatherum". The Grass Genera of the World. Retrieved 2009-08-19.


  5. ^ Palisot de Beauvois, Ambroise Marie François Joseph. 1812. Essai d'une Nouvelle Agrostographie 55-56 descriptions in Latin, commentary in French


  6. ^ 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


  7. ^ Altervista Flora Italiana genere Arrhenatherum


  8. ^ Valdes, B. & H. Scholz. 2006. The Euro+Med treatment of Gramineae - a generic synopsis and some new names. Willdenowia 36(2): 657–669


  9. ^ The Plant List search for Arrhenatherum


  10. ^ Flora of China Vol. 22 Page 322 燕麦草属 yan mai cao shu Arrhenatherum P. Beauvois


  11. ^ Atlas of Living Australia, Oatgrass, Arrhenatherum elatius (L.) P.Beauv. ex J.Presl & C.Presl


  12. ^ Biota of North America Program 2013 county distribution map


  13. ^ Rosengurtt, B., B. R. A. Maffei & P. I. Artucio. 1970. Gramíneas Uruguayas [i–vii], 1–489. Universidad de la República, Montevideo










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