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Cirsium wheeleri : ウィキペディア英語版 | Cirsium wheeleri
''Cirsium wheeleri'' is a North American species of plants in the thistle tribe within the sunflower family. Common names include Wheeler’s thistle. It is native to northern Mexico (Chihuahua, Sonora) and the southwestern United States (Arizona, New Mexico, Colorado, Utah, Nevada).〔(Flora of North America, Wheeler’s thistle, ''Cirsium wheeleri'' (A. Gray) Petrak )〕〔(Biota of North America Program 2014 county distribution map )〕 ''Cirsium wheeleri'' is a perennial herb up to 60 cm (2 feet) tall with a large taproots. Leaves have slender spines. There are one or more flower heads, each with white, pink, or pale purple disc florets but no ray florets. The plant grows in mountain meadows and open conifer forests.〔 ==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 wheeleri」の詳細全文を読む
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