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''Coreopsis bigelovii'' is a species of flowering plant in the daisy or sunflower family, Asteraceae, with the common names Bigelow coreopsis and Bigelow's tickseed.〔Mojave Desert Wildflowers, Pam MacKay, 2nd Ed., p. 206〕 It is endemic to California.〔(Biota of North America Program 2014 county distribution map )〕 The plant is known from the southern California Coast Ranges, southwestern Sierra Nevada, Transverse Ranges, and the Mojave and Colorado deserts. It is widespread in a number of habitat types from Merced and Inyo Counties south to San Diego County.〔(Jepson Manual, University of California )〕〔(Calflora taxon report, University of California, ''Leptosyne bigelovii'' (A. Gray) A. Gray, Bigelow coreopsis )〕 ==Description== ''Coreopsis bigelovii'' is annual herb that produces one to many stems with erect, stemlike inflorescences 10 to 30 centimeters tall. The leaves are divided into narrow lobes which are sometimes subdivided, and most of the leaves are located at the base of the plant.〔〔 The many inflorescences bear solitary flower heads, each with a bulbous involucre of rough phyllaries. The flower head has a center of many yellow disc florets and a fringe of 5 to 10 ray florets up to 2.5 centimeters (1 inch) long.〔〔 The fruit is a small achene. The fruit of the ray floret is rough and bumpy and lacks a pappus; that of the disc floret is more slender, shiny, edged with hairs, and tipped with a pappus of scales.〔〔(Flora of North America, ''Coreopsis bigelovii'' (A. Gray) Voss )〕 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「Coreopsis bigelovii」の詳細全文を読む スポンサード リンク
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