Origin of boysenberryafter Rudolph Boysen, United States horticulturist who developed it (c. 1935)
- A usually prickly shrub that is a hybrid of a western North American blackberry (Rubus ursinus) and is cultivated for its edible, dark red to nearly black fruit.
- The fruit of this plant.
Origin of boysenberryAfter Rudolph Boysen, (1895–1950), American horticulturalist who first grew the hybrid.
Named after its creator Rudolf Boysen.