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''Erigeron concinnus'' (Navajo fleabane or tidy fleabane) is a perennial flowering plant in the daisy family.〔Nesom, G. L. 1983b. Taxonomy of ''Erigeron concinnus'' (Asteraceae) and its separation from ''E. pumilus''. Sida 10: 159–166.〕 ''Erigeron concinnus'' is native to the dry mountains of the Mojave Desert around Death Valley in southeast California, north and east to Nevada, Idaho, Utah, Wyoming, Montana, Colorado, Arizona, and New Mexico;〔(Biota of North America Program 2014 county distribution map )〕 in the California portion of its range, it grows at elevations of 1200-1800 m. Some of the known populations lie inside Mojave National Preserve.〔(Calflora taxon report, University of California, ''Erigeron concinnus'' (Hook. & Arn.) Torrey & A. Gray Navajo fleabane )〕 ''Erigeron concinnus'' grows in sandy to rocky soils, and can reach a height of 6-16 cm (2.4-6.4 inches). The leaves are 2-6 cm (0.8-2.4 inches) long, lanceolate to linear, broadest near the rounded apex. The flower heads are sometimes produced one per branch, sometimes in groups of up to 6, each head 7-11 mm (0.28-0.44 inches) in diameter, with 50-125 white, pink, or blue ray florets and yellow disk florets.〔(Flora of North America: ''Erigeron concinnus'' )〕〔Mojave Desert Wildflowers, Jon Mark Stewart, 1998, pg. 166〕 ;Varieties〔〔 *''Erigeron concinnus'' var. ''concinnus'' - Arizona, California, Colorado, Idaho, Nevada, New Mexico, Utah, Wyoming *''Erigeron concinnus'' var. ''condensatus'' D.C.Eaton - New Mexico, Utah, Wyoming *''Erigeron concinnus'' var. ''subglaber'' (Cronquist) G.L.Nesom - Arizona, Colorado, Utah ==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 concinnus」の詳細全文を読む スポンサード リンク
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