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Plains coreopsis : ウィキペディア英語版 | Plains coreopsis
Plains coreopsis or calliopsis, ''Coreopsis tinctoria'', is an annual forb. The plant is common to Canada (from Quebec to British Columbia), Northeast Mexico (Coahuila, Nuevo León, Tamaulipas), and much of the United States, especially the Great Plains and Southern states where it is often called "calliopsis."〔(Biota of North America Program 2014 county distribution map )〕〔A biosystematic study of ''Coreopsis tinctoria'' and ''C. cardaminefolia'' (Compositae). Edwin B. Smith and Hampton M. Parker, Brittonia, Volume 23, Number 2, pages 161-170, 〕 The species is also widely cultivated in and naturalized in China.〔(Flora of China, 两色金鸡菊 liang se jin ji ju ''Coreopsis tinctoria'' Nuttall )〕 It often grows in disturbed areas such as roadsides and cultivated fields.〔 ISBN 0-89672-614-2〕 ==Description== Growing quickly, ''Coreopsis tinctoria'' plants attain heights of 12 to 40 inches (30–100 cm). Leaves are pinnately-divided, glabrous and tending to thin at the top of the plant where numerous 1- to 1.5-inch (2.5-to 4-cm) flower heads sit atop slender stems.〔(Flora of North America, ''Coreopsis tinctoria'' Nuttall, J. Acad. Nat. Sci. Philadelphia. 2: 114. 1821. )〕 Flower heads are brilliant yellow with maroon or brown disc florets of various sizes. Flowering typically occurs in mid-summer. The small, slender seeds germinate in fall (overwintering as a low rosette) or early spring.〔
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「Plains coreopsis」の詳細全文を読む
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