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Grindelia grandiflora : ウィキペディア英語版 | Grindelia grandiflora
''Grindelia grandiflora'', manyray gumweed, is a North American species of flowering plants in the daisy family. It is native to the south-central United States and north-central Mexico, in the States of Texas and Coahuila.〔(Biota of North America Program 2014 county distribution map )〕〔(Nesom, G.L. 1990. Studies in the systematics of Mexican and Texan ''Grindelia'' (Asteraceae: Astereae. Phytologia 68(4): 303–332 ) distribution map on page 309〕 ''Grindelia grandiflora'' grows in grasslands, scrublands, ditches, and roadsides, and along streambanks. It is an annual herb sometimes as much as 200 cm (80 inches or almost 7 feet) tall. The plant usually produces numerous flower heads in open, branching arrays. Each head has 17-26 ray flowers, surrounding a large number of tiny disc flowers.〔(Flora of North America, ''Grindelia decumbens'' Greene, 1896. )〕〔(Hooker, William Jackson. 1852. : Curtis's botanical magazine 78: plate 4628 plus 2 subsequent text pages ) full-page colour illustration, diagnosis in Latin, commentary and figure captions in English〕 ==References==
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