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Rubus arcuans : ウィキペディア英語版 | Rubus arcuans
''Rubus arcuans'', the wand dewberry, is a rare North American species of flowering plant in the rose family. It is found in eastern Canada (Québec, Nova Scotia, Prince Edward Island) the northeastern United States (Massachusetts, Maine).〔(Biota of North America Program 2014 county distribution map )〕〔 Fernald, Merritt Lyndon, & St. John, Harold. 1921. Proceedings of the Boston Society of Natural History 36(1): 78–79, plate 2, figure 7〕〔(The Plant List, ''Rubus arcuans'' Fernald & H.St.John )〕 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 )〕 Some studies have suggested that ''R. arcuans'' may have originated as a hybrid between ''R. setosus'' and ''R. flagellaris. ''〔(Flora of North America, ''Rubus setosus'' Bigelow, 1824. Bristly blackberry, ronce sétuleuse )〕 ==References==
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