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Erigeron tweedyi : ウィキペディア英語版 | Erigeron tweedyi
''Erigeron tweedyi'' is a North American species of flowering plant in the daisy family known by the common name Tweedy’s fleabane.〔 It is native to the northern Rocky Mountains in the US States of Montana, Idaho, and Wyoming.〔(Biota of North America Program 2014 county distribution map )〕 ''Erigeron tweedyi'' grows on talus and rocky slopes at high elevations. It is a perennial herb up to 20 centimeters (8 inches) tall, producing a taproot and a branching underground caudex. Leaves are covered with grayish-white hairs. The inflorescence is made up of 1-4 flower heads per stem. Each head contains 20–50 white, blue, or purple ray florets surrounding numerous yellow disc florets.〔(Flora of North America ''Erigeron tweedyi'' Canby, 1888. Tweedy’s fleabane )〕 ==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 tweedyi」の詳細全文を読む
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