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Hypericum sphaerocarpum : ウィキペディア英語版 | Hypericum sphaerocarpum
''Hypericum sphaerocarpum'', the roundseed St. Johnswort or barrens St. John's Wort, is a species of flowering plant in the St. John's Wort family. It is native to the Eastern United States where it is primarily found in the Midwest and Mid-South.〔(BONAP Project )〕 Its preferred habitat is dry, calcareous glades and prairies.〔(Illinois Wildflowers )〕 It is a semi-woody perennial that produces clusters of yellow flowers in the summer. ''Hypericum sphaerocarpum'' is often confused with ''Hypericum dolabriforme'' where their ranges overlap. ''H. sphaerocarpum'' can be distinguished by its smaller flowers, glossy leaves, and patch-forming rhizomes. ==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「Hypericum sphaerocarpum」の詳細全文を読む
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