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Helenium bigelovii
''Helenium bigelovii'' is a North American perennial plant in the Sunflower Family, commonly known as Bigelow's sneezeweed.〔Sierra Nevada Wildflowers, Karen Wiese, 2nd Ed., 2013, p. 116〕
It grows in moist areas such as meadows, marshes, or streamsides. It is found at moderate and higher elevations (3000-10,000 ft) in the foothills and mountains of California and Oregon: Cascades, Coast Ranges, Klamath Mountains, Sierra Nevada, etc.〔(Biota of North America Program 2014 county distribution map )〕〔(Calflora taxon report, University of California, ''Helenium bigelovii'' A. Gray Bigelow's sneezeweed, Sneezeweed )〕〔(Turner Photographics, ''Helenium bigelovii'' - Wildflowers of the Pacific Northwest )〕
''Helenium bigelovii'' is a perennial herb sometimes as much as tall. One plant can produce as many as 20 flower heads, either one per branch or in branching arrays. Each head has 14-20 yellow ray florets (bending backwards and with teeth at the tips) surrounding sometimes as many as 800 disc florets (yellow at first, turning brown as they get older).〔〔(Flora of North America, ''Helenium bigelovii'' Torrey & A. Gray, 1857. Bigelow’s sneezeweed )〕〔Laird R. Blackwell, Wildflowers of the Sierra Nevada and the Central Valley, Lone Pine Publishing, 1998.〕〔Norman F. Weeden, A Sierra Nevada Flora, 4th Ed., Wilderness Press, 1996.〕
==Cultivation==
Cultivars are raised as ornamentals.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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