Arrhenatherum

Life-forms

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Cladus: Commelinids
Ordo: Poales

Familia: Poaceae
Subfamilia: Pooideae
Tribus: Poeae
Subtribus: Aveninae
Genus: Arrhenatherum
Species: A. album – A. calderae – A. elatius - - A. kotschyi - A. longifolium – A. palaestinum – A. pallens

Name

Arrhenatherum P.Beauv., Ess. Agrostogr.: 55 (1812)

Type species: Arrhenatherum elatius (L.) P.Beauv. ex J.Presl & C.Presl., Fl. Cech.: 17 (1819)

Note: most species once assigned to this genus are now circumscribed in Helictotrichon Besser in J.J.Roemer & J.A.Schultes, Mant. 3: 526 (1827).
Synonyms

Heterotypic
Thorea Rouy in G.Rouy & J.Foucaud, Fl. France 14: 142 (1913), nom. illeg.
Pseudarrhenatherum Rouy, Bull. Soc. Bot. France 68: 401 (1921) nom. nov.
Thoreochloa Holub, Acta Univ. Carol., Biol. 1962: 154 (1963), nom. superfl.

References
Primary references

Palisot de Beauvois, A.M.F.J. 1812. Essai d'une Nouvelle Agrostographie; ou Nouveaux Genres des Graminées; Avec Figures Représentant les Caractéres de tous le Genres. Imprimerie de Fain. BHL Reference page.

Additional references

Nisa, S.C. 2003. Revision of the genus Arrhenatherum (Poaceae): Preliminary results based on morphology. In Monocots III Abstracts, Rancho Santa Ana: Claremont.

Links

Govaerts, R. et al. 2023. Arrhenatherum in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2023 Aug 1. Reference page.
Tropicos.org 2023. Arrhenatherum. Missouri Botanical Garden. Published online. Accessed: 1 Aug 2023.
International Plant Names Index. 2023. Arrhenatherum. Published online. Accessed: 1 Aug 2023. Reference page.
Hassler, M. 2023. World Plants. Synonymic Checklist and Distribution of the World Flora. . Arrhenatherum. Accessed: 1 Aug 2023.

Vernacular names
čeština: Ovsík
Deutsch: Glatthafer
English: Oatgrass
suomi: Heinäkaurat
magyar: Franciaperje
polski: Rajgras

Arrhenatherum, commonly called oat-grass or button-grass, is a genus of Eurasian and North African plants in the grass family.[4][5][6][7]
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 (6 ft),[8] but die off in winter. The leaves are hairless with blunt ligules. The inflorescence is a panicle with two-flowered bisexual spikelets.[9]

Species[3][10]

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,[11] Australia,[12] New Zealand, the Americas[13][14]
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[3]

numerous species now considered better placed in other genera Avenula Danthoniastrum Duthiea Helictochloa Helictotrichon Sphenopholis
See also

List of Poaceae genera

References

lectotype designated by L.K. Pfeiffer, Nom. 1: 274 (1872)
Tropicos, Arrhenatherum P. Beauv.
"World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew".
Watson L, Dallwitz MJ. (2008). "The Grass Genera of the World: Arrhenatherum". The Grass Genera of the World. Retrieved 2009-08-19.
Palisot de Beauvois, Ambroise Marie François Joseph. 1812. Essai d'une Nouvelle Agrostographie 55-56 descriptions in Latin, commentary in French
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
Altervista Flora Italiana genere Arrhenatherum
Streeter D, Hart-Davies C, Hardcastle A, Cole F, Harper L. 2009. Collins Flower Guide. Harper Collins ISBN 9-78-000718389-0
Valdes, B. & H. Scholz. 2006. The Euro+Med treatment of Gramineae - a generic synopsis and some new names. Willdenowia 36(2): 657–669
The Plant List search for Arrhenatherum
Flora of China Vol. 22 Page 322 燕麦草属 yan mai cao shu Arrhenatherum P. Beauvois
Atlas of Living Australia, Oatgrass, Arrhenatherum elatius (L.) P.Beauv. ex J.Presl & C.Presl
Biota of North America Program 2013 county distribution map
Rosengurtt, B., B. R. A. Maffei & P. I. Artucio. 1970. Gramíneas Uruguayas [i–vii], 1–489. Universidad de la República, Montevideo