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''Ptelea'' is a genus of flowering plants in the citrus family, Rutaceae. The name, of Greek derivation, is the classical name of the elm tree. Carl Linnaeus used that word for this genus because of the resemblance of its fruit to that of the elm. Members of the genus are commonly known as hoptrees. ==Selected species== *''Ptelea aptera'' Parry *''Ptelea crenulata'' Greene – California hoptree *''Ptelea trifoliata'' L. – Common hoptree * *''Ptelea trifoliata'' subsp. ''angustifolia'' (Benth.) V.L.Bailey * *''Ptelea trifoliata'' subsp. ''coahuilensis'' (Greene) V.L.Bailey * *''Ptelea trifoliata'' f. ''fastigiata'' (Bean) Rehder * *''Ptelea trifoliata'' subsp. pallida'' (Greene) V.L.Bailey * *''Ptelea trifoliata'' subsp. ''polyadenia'' (Greene) V.L.Bailey * *''Ptelea trifoliata'' f. ''pubescens'' (Pursh) Voss * *''Ptelea trifoliata'' subsp. ''trifoliata''〔 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「Ptelea」の詳細全文を読む スポンサード リンク
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