Rubus permixtus is a North American species of dewberry in the genus Rubus, a member of the rose family. It grows in scattered locations in the north-central and northeastern United States, from Maine south as far as West Virginia plus Michigan and Wisconsin. Nowhere is it very common.Biota of North America Program 2014 county distribution map
Rubus permixtus is a nearly prostrate shrub that runs along the ground as much as 6 feet (180 cm), with vertical stems arising from those on the ground. Fruits are generally black, sweet, and edible.Blanchard, William Henry. 1906. Torreya 6(6): 117–119
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