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''Helianthella californica'' is a species of flowering plant in the sunflower family known by the common name California helianthella. This wildflower is native to the mountains of California, northwestern Nevada, and southwestern Oregon.〔(Biota of North America Program 2014 county distribution map )〕〔 ''Helianthella californica'' is a taprooted perennial herb producing erect stems up to about 60 centimeters (2 feet) tall. The many lance-shaped leaves are up to 4 centimeters (1.6 inches) wide and up to 26 cm (11 inches) long, smooth or slightly toothed along the edges. The inflorescence holds one or more sunflower-like flower heads. Each head has a center of golden disc florets with purple or reddish parts, and a fringe of yellow ray florets one or two centimeters (0.4-0.8 inches) long.〔(Flora of North America, ''Helianthella californica'' A. Gray 1857. )〕 ;Subspecies〔(The Plant List, ''Helianthella californica'' A.Gray )〕〔(Calflora taxon report, University of California, ''Helianthella californica'' A. Gray, California helianthella )〕 *''Helianthella californica'' subsp. ''californica'' - Coast Ranges in area near San Francisco Bay plus a few populations in northern Sierra Nevada Foothills *''Helianthella californica'' subsp. ''nevadensis'' (Greene) W.A.Weber - Sierra Nevada + Cascades in California, Nevada, + Oregon *''Helianthella californica'' subsp. ''shastensis'' (W.A.Weber) W.A.Weber - southern Cascades plus Shasta-Trinity area ==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「Helianthella californica」の詳細全文を読む スポンサード リンク
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