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Erigeron sceptrifer : ウィキペディア英語版 | Erigeron sceptrifer
''Erigeron sceptrifer'' is a North American species of flowering plant in the daisy family known by the common name Scepter-bearing fleabane..〔 It has been found in northern Mexico (Chihuahua, Sonora, San Luis Potosí) and the southeastern United States (Cochise County in Arizona).〔〔(Biota of North America Program 2014 county distribution map )〕〔(Nesom, Guy L. 1990. Phytologia 69(4): 239, map 2 ) distribution map for ''Erigeron sceptrifer'' + ''E. arisolius''〕〔(SEINet, Southwestern Biodiversity, Arizona Chapter, ''Erigeron sceptrifer'' G.L. Nesom ) includes photos, description, distribution map〕 ''Erigeron sceptrifer'' grows in grasslands, frequently alongside widely spaced pine, oak, and juniper trees. It is an annual herb up to 80 cm (32 inches) tall, forming a thin taproot. The inflorescence generally contains 20–50 flower heads in a loose array. Each head can sometimes contain as many as 195 white ray florets surrounding many yellow disc florets.〔(Flora of North America, ''Erigeron sceptrifer'' G. L. Nesom, 1990. Scepter-bearing fleabane ) erroneously says plant is only 8 cm tall〕〔(Nesom, Guy L. 1990. Phytologia 69(4): 248–250 )〕 ==References==
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