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Rubus steelei : ウィキペディア英語版 | Rubus steelei
''Rubus steelei'' is an uncommon North American species of brambles in the rose family. It grows only in the United States, primarily in the upper Mississippi Valley, the Great Lakes region and the Appalachian Mountains, with isolated populations scattered in Texas, Georgia, and Alabama.〔(Biota of North America Program 2014 county distribution map )〕〔Bailey, Liberty Hyde 1943. Gentes Herbarum; Occasional Papers on the Kinds of Plants 5(5): 268–269, figure 109〕 The genetics of ''Rubus'' is extremely complex, so that it is difficult to decide on which groups should be recognized as species. There are many rare species with limited ranges such as this. Further study is suggested to clarify the taxonomy.〔(Flora of North America, ''Rubus'' Linnaeus, 1754. Bramble )〕 ==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「Rubus steelei」の詳細全文を読む
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