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''Trifolium dubium'', the lesser trefoil, lesser hop trefoil or suckling clover is a plant in the family Fabaceae. This species is generally accepted as the primary plant to represent the traditional Irish shamrock.〔Cooper, P. (Shamrock shortage in Ireland sparks St. Pat's fears ). Irish Central.〕 It is native to Europe, but can be found in many parts of the world as an introduced species. It is probably an allotetraploid that arose from the crossing of ''Trifolium campestre'' and ''T. micranthum''.〔Ansari, H. A., et al. (2008). Molecular and cytogenetic evidence for an allotetraploid origin of ''Trifolium dubium'' (Leguminosae). ''Chromosoma'' 117(2):159-67.〕 ==Gallery== File:TrifoliumDubium-bloem-hr.jpg File:Trif dubium210ss.JPG File:Trif dubium204ss.JPG File:Trifolium dubium001.JPG File:Trifolium_dubium.jpg 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「Trifolium dubium」の詳細全文を読む スポンサード リンク
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