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''Poa''〔From Greek πόα "grass, meadow."〕 is a genus of about 500 species of grasses, native to the temperate regions of both hemispheres. Common names include meadow-grass (mainly Europe and Asia), bluegrass (mainly North America), tussock (some New Zealand species), and speargrass. "Poa" is Greek for fodder. ''Poa'' are members of the Pooideae subfamily of the Poaceae family.〔(Flora of China Vol. 22 Page 257 早熟禾属 zao shu he shu ''Poa'' Linnaeus, Sp. Pl. 1: 67. 1753 )〕〔(Flora of Pakistan )〕〔(Altervista Flora Italiana, genera ''Poa'' ) includes photos and distribution maps for several species〕〔Soreng, R. J. & P. M. Peterson. 2012. Revision of ''Poa'' L. (Poaceae, Pooideae, Poeae, Poinae) in Mexico: new records, re-evaluation of ''P. ruprechtii'', and two new species, ''P. palmeri'' and ''P. wendtii''. PhytoKeys 15: 1–104〕 Bluegrass, which has green leaves, derives its name from the seed heads, which are blue when the plant is allowed to grow to its natural height of two to three feet (0.6 to 0.9 meters).〔(What Makes Kentucky's Bluegrass Blue. ) ''New York Times''. June 3, 1993.]〕〔Longhi-Wagner, H. M. 1987. Gramineae. Tribo Poeae, in Fl. Ilust. Rio Grande do Sul. Boletim do Instituto de Biociências, Universidade Federal do Rio Grande do Sul 41: 1–191〕〔Zon, A. P. M. v. 1992. Graminées du Cameroun. Wageningen Agricultural University Papers 92–1(2): 1–557〕 The genus ''Poa'' includes both annual and perennial species. Most are monoecious, but a few are dioecious (separate male and female plants). The leaves are narrow, folded or flat, sometimes bristled, and with the basal sheath flattened or sometimes thickened, with a blunt or hooded apex and membranaceous ligule.〔Cabi, E. & M. Doğan. 2012. Poaceae. 690–756. In A. Güner, S. Aslan, T. Ekim, M. Vural & M. T. Babaç (eds.) Türkiye Bitkileri Listesi. Nezahat Gökyiğit Botanik Bahçesi ve Flora Araştırmaları Derneği Yayını, Istanbul〕〔Gibbs Russell, L. W., M. Koekermoer, L. Smook, N. P. Barker, H. M. Anderson & M. J. Dallwitz. 1990. Grasses of Southern Africa. Memoirs of the Botanical Survey of South Africa 58: i–ix,.〕〔Negritto, M. A. & A. M. Antón. 2000. Revisión de las especies de ''Poa'' (Poaceae) del noroeste argentino. Kurtziana 28(1): 95–136〕 ==Cultivation and uses== Many of the species are important pasture plants, used extensively by grazing livestock. Kentucky bluegrass (''Poa pratensis'') is the most extensively used cool-season grass used in lawns, sports fields, and golf courses in the United States. Annual bluegrass (''Poa annua'') can sometimes be considered a weed. According to Galen, the roots of certain species are good for treating fresh wounds and bleeding. In the sixteenth century, ''Poa'' grasses were used for inflammation of the kidney. Some of the ''Poa'' species are popular for gardens and for landscaping in New Zealand. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Poa」の詳細全文を読む スポンサード リンク
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