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Classification System: APG IV

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

Familia: Poaceae
Subfamilia: Oryzoideae
Tribus: Oryzeae
Subtribus: Oryzinae
Genus: Leersia
Species: (18)
L. angustifolia – L. denudata – L. drepanothrix – L. friesii – L. hexandra – L. japonica – L. lenticularis – L. ligularis – L. monandra – L. nematostachya - L. oncothrix - L. oryzoides – – L. perrieri – L. sayanuka – L. stipitata – L. tisserantii – L. triandra – L. virginica
Name

Leersia Sw., Prodr. Veg. Ind. Occ.: 21 (1788), nom. cons.
Type species: Leersia oryzoides (L.) Sw., Prodr. Veg. Ind. Occ.: 21 (1788)

Synonyms

Heterotypic
Homalocenchrus Mieg, Acta Helv. Phys.-Math. 4: 307 (1760), nom. rej.
Ehrhartia Weber in F.H.Wiggers, Prim. Fl. Holsat.: 63 (1780).
Asprella Schreb., Gen. Pl.: 45 (1789).
Aplexia Raf., Neogenyton: 4 (1825).
Endodia Raf., Neogenyton: 4 (1825).
Blepharochloa Endl., Gen. Pl.: 1352 (1840).
Pseudoryza Griff., Ic. Pl. Asiat.: t. 144 (1851).

References

Swartz, O. (1788) Nova Genera et Species Plantarum seu Prodromus 1, 21.
Govaerts, R. et al. 2013. Leersia in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2013 Nov. 6. Reference page.
Simon, B.K., Clayton, W.D., Harman, K.T., Vorontsova, M., Brake, I., Healy, D. & Alfonso, Y. 2013. GrassWorld, Leersia. Published on the internet. Accessed: 2013 Nov. 6.
Tropicos.org 2013. Leersia. Missouri Botanical Garden. Published on the internet. Accessed: 2013 Nov. 6.
International Plant Names Index. 2013. Leersia. Published online. Accessed: 6 Nov. 2013.


Leersia is a genus of plants in the grass family which includes species known generally as cutgrasses.[2][3]

The genus is widespread across many countries on all the inhabited continents.[4][5][6][7][8][9][10][11]

It was named for the German botanist Johann Daniel Leers (1727-1774).[12]

Species[1]

Leersia angustifolia Prodoehl - Sudan
Leersia denudata Launert - from Kenya to Cape Province
Leersia drepanothrix Stapf - from Guinea to Uganda
Leersia friesii Melderis - from Uganda to Botswana
Leersia hexandra Sw. - Africa, Eurasia, Australian, North + South America, various islands
Leersia japonica (Honda) Honda - China, Japan, Korea
Leersia lenticularis Michx. - central + eastern USA
Leersia ligularis Trin. - Latin America + West Indies from Coahuila to Paraguay
Leersia monandra Sw. - Texas, Florida, Mexico, West Indies
Leersia nematostachya Launert - Cameroon, Angola, Zambia
Leersia oncothrix C.E.Hubb. - Zambia
Leersia oryzoides (L.) Sw. - Eurasia (from Azores to Primorye), North America (Canada, USA, northeastern Mexico)
Leersia perrieri (A.Camus) Launert - Madagascar
Leersia sayanuka Ohwi - China, Japan, Korea, Vietnam
Leersia stipitata Bor - Thailand
Leersia tisserantii (A.Chev.) Launert - from Guinea to Namibia
Leersia triandra C.E.Hubb. - Sierra Leone, Liberia, Cameroon
Leersia virginica Willd. - eastern Canada, eastern + central USA

formerly included[1]

see Arthraxon Digitaria Hygroryza Maltebrunia Megastachya

Leersia aristata - Hygroryza aristata
Leersia digitaria - Digitaria ciliaris
Leersia disticha - Megastachya mucronata
Leersia hispida - Arthraxon hispidus
Leersia latifolia - Maltebrunia leersioides

References

Kew World checklist of Selected Plant Families
Swartz, Olof. 1788. Nova Genera et Species Plantarum seu Prodromus 21 in Latin
Tropicos, Leersia Sw.
Flora of China Vol. 22 Page 184 假稻属 jia dao shu Leersia Solander ex Swartz, Prodr. 21. 1788.
Flora of Pakistan
Altervista Flora Italiana genere leersia Archived 2015-02-01 at the Wayback Machine
Atlas of Living Australia, Leersia Sw. Cutgrass
Sanbi Red List of South African Plants
Biota of North America Program 2013 county distribution maps
Pohl, R. W. & G. Davidse. 1994. 25. Leersia Sw., nom. cons. 6: 221–222. In G. Davidse, M. Sousa Sánchez & A.O. Chater (eds.) Flora Mesoamericana. Universidad Nacional Autónoma de México, México, D.F..
Zon, A. P. M. v. 1992. Graminées du Cameroun. Wageningen Agricultural University Papers 92–1(2): 1–557
Ada Hayden Herbarium - Iowa State University, rice cutgrass (cutgrass), Leersia oryzoides (L.) Sw.

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