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Solidago ptarmicoides
''Solidago ptarmicoides,'' the prairie goldenrod, white flat-top goldenrod or upland white aster a North American species of goldenrod in the sunflower family. It is native to the central and eastern Canada (from New Brunswick to Manitoba) and parts of the United States (mostly Great Lakes region, the Northeast, the Ozarks, and the northern Great Plains, with isolated populations in Wyoming, Colorado, Oklahoma, and scattered locations in the Southeast.〔(Flora of North America, ''Solidago ptarmicoides'' (Torrey & A. Gray) B. Boivin, 1972. Upland white aster , white flat-top goldenrod , verge d’or faux-ptarmica )〕〔(Biota of North America Program, 2014 county distribution map )〕
''Solidago ptarmicoides'' is distinctive within the genus in having white to cream-colored flowers, in heads arranged in a flat-topped corymb rather than in an elongated raceme. One plant can sometimes produce as many as 50 small heads. Leaves are narrow and linear, often rather stiff. The species prefers dry, sandy soils and grassy meadows.〔
==References==
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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