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''Erigeron pulchellus'' (Robin’s plantain, blue spring daisy, hairy fleabane) is a North American species of plants in the daisy family.〔Horn, Cathcart, Hemmerly, Duhl, Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians, Lone Pine Publishing, (2005) p 342, ISBN 978-1-55105-428-5,〕 It is widespread across much of the United States and Canada from Québec and Ontario south as far as eastern Texas and the Florida Panhandle.〔(Biota of North America Program 2014 county distribution map )〕 ''Erigeron pulchellus'' is a perennial herb up to 60 cm (2 feet) tall, spreading by means of underground rhizomes. It produces 1-9 flower heads per stem, each head containing sometimes as many as 100 white, pink, pale blue, or pale purple ray florets surrounding many yellow disc florets. The species grows in forests, roadsides, and the banks of bodies of water.〔(Flora of North America, ''Erigeron pulchellus'' Michaux, Fl. Bor.-Amer. 2: 124. 1803. Hairy fleabane )〕 ;Varieties〔 *''Erigeron pulchellus'' var. ''brauniae'' Fernald - Kentucky, Ohio, West Virginia *''Erigeron pulchellus'' var. ''pulchellus'' - most of species range *''Erigeron pulchellus'' var. ''tolsteadii'' Cronquist - Minnesota ==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 pulchellus」の詳細全文を読む スポンサード リンク
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