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Hymenoxys brandegeei : ウィキペディア英語版 | Hymenoxys brandegeei
''Hymenoxys brandegeei'' is a species of flowering plant in the daisy family known by the common name Brandegee’s rubberweed or western bitterweed. It is native to the States of Arizona, Colorado, and New Mexico in the southwestern United States.〔(Biota of North America Program 2014 distribution map )〕〔(SEINet, Southwestern Biodiversity, Arizona chapter ) description, photos, distribution map〕 ''Hymenoxys brandegeei'' grows at elevations of in the mountains, often above timber line. It is a perennial herb up to tall. One plant generally produces one flower head per stem, up to 10 per plant. Each head has 14–23ray flowers and 150–250 disc flowers.〔(Flora of North America, ''Hymenoxys brandegeei'' (Porter ex A. Gray) K. F. Parker, 1950. Brandegee’s rubberweed, western bitterweed )〕 The oldest available name for this plant is ''Actinella grandiflora'' var. ''glabrata'', coined in 1874.〔Porter, Thomas Conrad. 1874. Synopsis of the Flora of Colorado 76〕 In elevating the taxon to species status, Asa Gray opted to forgo the common but not mandatory custom of using the varietal epithet as a species epithet. He chose instead to call the species ''Actinella brandegei''.〔(Gray, Asa. 1878. Proceedings of the American Academy of Arts and Sciences 13: 373 )〕 ==References==
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