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Cirsium texanum : ウィキペディア英語版 | Cirsium texanum
''Cirsium texanum'' is a North American species of plants in the thistle tribe within the sunflower family. Common names include Texas thistle, Texas purple thistle or southern thistle.〔(Flora of North America, Texas or Texas purple or southern thistle, ''Cirsium texanum'' Buckley )〕 The species is native to northern Mexico (Coahuila, Durango, Nuevo León, San Luis Potosí, Tamaulipas) and the southern Great Plains of the south-central United States (primarily Texas, Oklahoma, and eastern New Mexico with additional populations in Louisiana, Arkansas, and Missouri).〔(Biota of North America Program 2014 county distribution map )〕〔CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, México D.F..〕 ''Cirsium texanum'' is a biennial or perennial herb up to 80 cm (32 inches) tall. Leaves have small, narrow spines along the edges. Flower heads are sometimes produced one at a time, sometimes in small groups, each head with light purple disc florets but no ray florets.〔 ==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「Cirsium texanum」の詳細全文を読む
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