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 mapFernald, Merritt Lyndon, & St. John, Harold. 1921. Proceedings of the Boston Society of Natural History 36(1): 78–79, plate 2, figure 7The 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
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