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''Silphium perfoliatum'', the cup plant or cup-plant, is a species of flowering plant in the Asteraceae family, native to eastern and central North America. It is an erect herbaceous perennial with triangular toothed leaves, and daisy-like yellow composite flower heads in summer. The specific epithet ''perfoliatum'' means "through the leaf." There are two varieties:- *''S. perfoliatum'' var. ''connatum'' *''S. perfoliatum'' var. ''perfoliatum''. ==Common names== 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「Silphium perfoliatum」の詳細全文を読む スポンサード リンク
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