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Erigeron davisii : ウィキペディア英語版 | Erigeron davisii
''Erigeron davisii '' is a North American species of flowering plant in the daisy family known by the common name Davis’s fleabane .〔(Flora of North America, ''Erigeron davisii'' (Cronquist) G. L. Nesom, Sida. 21: 22. 2004. Davis’s fleabane )〕 It has been found only in Idaho and in northeastern Oregon.〔(Nesom, Guy L. 2004. Sida 21(1): 22-24 ) includes distribution map on page 23〕 ''Erigeron davisii'' is a perennial herb up to 30 cm (12 inches) tall. Each branch generally has only one flower head, with 50–80 white ray florets and numerous yellow disc 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「Erigeron davisii」の詳細全文を読む
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