Rubus pugnax is a North American species of highbush blackberry in section Alleghenienses of the genus Rubus, a member of the rose family. It is found in eastern and central Canada (Québec, Ontario, New Brunswick, Nova Scotia) and in the eastern United States (Maine, Vermont, Massachusetts, New York, Pennsylvania, North Carolina, West Virginia).Biota of North America Program 2014 state-level distribution mapBailey, Liberty Hyde 1944. Gentes Herbarum; Occasional Papers on the Kinds of Plants 5(8): 524–525, figure 235
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