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''Solidago rigida,'', common names stiff goldenrod and stiff-leaved goldenrod, is a North American plant species in the sunflower family. It is native to the region between the Atlantic Coast and the Rockies, from Alberta east to Ontario, south as far as New Mexico, Texas, and Georgia. In New England, it grows today only in Connecticut, though there are historical records indicating that it formerly grew in Rhode Island and Massachusetts.〔(Biota of North America Program 2014 county distribution map )〕 ''Solidago rigida'' is 〔(Flora of North America, ''Solidago rigida'' Linnaeus, 1753. Stiff-leaved goldenrod )〕 ;Subspecies〔〔 *''Solidago rigida'' subsp. ''glabrata'' (E.L.Braun) S.B.Heard & Semple - southeastern + south-central USA *''Solidago rigida'' subsp. ''humilis'' (Porter) S.B.Heard & Semple - central + western Canada, central + western USA as far west as the Rocky Mountains *''Solidago rigida'' subsp. ''rigida'' - Ontario, central + eastern USA ==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「Solidago rigida」の詳細全文を読む スポンサード リンク
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