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Petrophytum
''Petrophytum'' (orth. var. ''Petrophyton'') is a small genus of plants in the rose family known as the rock spiraeas or rockmats. These are low mat-forming shrubs which send up erect stems bearing spike inflorescences of flowers. The brushy flowers are white and have many stamens and hairy, thready pistils. Rockmats are native to western North America. Species: *''Petrophytum caespitosum'' - mat rock spiraea *''Petrophytum cinerascens'' - halfshrub rockmat, Chelan rockmat *''Petrophytum hendersonii'' - Olympic Mountain rockmat ==References and external links== 〔 *(Jepson Manual Treatment ) *(USDA Plants Profile ) *(The Plant List: A Working List of All Plant Species )
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「Petrophytum」の詳細全文を読む
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