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Erigeron humilis : ウィキペディア英語版 | Erigeron humilis
''Erigeron humilis'' is an arctic and alpine species of flowering plants in the daisy family known as Arctic Alpine fleabane.〔 It is widespread across the colder regions of the Northern Hemisphere. In North America, it has been found in Alaska, much of Canada, Greenland, and the Rocky Mountains of the United States as far south as Colorado.〔(Biota of North America Program 2014 state-level distribution map )〕 In Eurasia, it has been found in Scandinavia (including Iceland),〔(Swedish Ecotourism Society, Photo Gallery / Flowers: Swedish Lapland, ''Erigeron humilis'' )〕〔(Flora of Svalbard )〕 and the Chukotka region in the Russian Far East.〔(Plantarium, ''Erigeron humilis'' J. Graham (family Asteraceae) ) photo〕 ''Erigeron humilis'' is a perennial herb up to 25 centimeters (10 inches) tall, spreading by means of underground rhizomes. Each plant generally produces only one flower head, with sometimes as many as 150 blue or purple ray florets surrounding numerous yellow disc florets.〔(Flora of North America, ''Erigeron humilis'' Graham, 1828. Arctic Alpine fleabane, petite vergerette )〕 ==References==
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