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''Xyris difformis'', the bog yelloweyed grass, is a North American species of flowering plant in the yellow-eyed-grass family. It is native to the eastern and southern United States, eastern and central Canada, and Central America.〔(Biota of North America Program 2014 county distribution map )〕〔 ''Xyris difformis'' is a perennial herb up to 90 cm (3 feet) tall with grass-like leaves up to 50 cm (20 inches) long, and yellow flowers. 〔(of North America, ''Xyris difformis'' Chapm. 1860. )〕〔(Chapman, Alvan Wentworth 1860. Flora of the southern United States 500 )〕 ;Varieties〔 *''Xyris difformis'' var. ''curtissii'' (Malme) Kral - Belize, coastal states of USA from Texas to Virginia *''Xyris difformis'' var. ''difformis'' - Nova Scotia, Ontario, USA (coastal states from Maine to Texas plus areas as far inland as Michigan, Oklahoma, Indiana, and Arkansas) *''Xyris difformis'' var. ''floridana'' Kral - Belize, Honduras, Nicaragua, USA (coastal states from Louisiana to the Carolinas) ==References== 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「Xyris difformis」の詳細全文を読む スポンサード リンク
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