Rubus concameratus, the West Virginia blackberry, is a rare North American species of flowering plant in the rose family. It has been found only in the state of West Virginia in the east-central United States.Biota of North America Program 2014 county distribution mapBailey, Liberty Hyde. 1943. Gentes Herbarum; Occasional Papers on the Kinds of Plants 5(5): 398–400, figure 180
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
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External links photo of herbarium specimen at Missouri Botanical Garden, collected in West Virginia in 1953