wild blackberry Rosaceae Rubus
ursinus Cham. & Schltdl. symbol: RUUR
Leaf: Alternate, pinnately compound (usually 3 leaflets), persistent (often barely); leaflets ovate, lobed and doubly serrate, 1 1/2 to 3 inches long, dark green above and paler below. Rachis and petiole armed with slender, easily detached prickles.
Flower: Species is usually dioecious; mostly imperfect, white to pink, 1 to 2 inches across, narrow petals, borne in clusters.
Fruit: Black aggregate of drupelets about 1/2 inch long, very edible.
Twig: Slender, round, and green to red, but covered with a white, waxy bloom, armed with slender straight or recurved prickles that detach easily.
Form: A climbing or trailing evergreen shrub with round, slender branches that commonly reach 10 to 20 feet in length. Young stems are erect, but arch as they lengthen, rapidly touching the ground and rooting at the nodes.
Looks like: evergreen blackberry - Himalaya blackberry - whitebark raspberry - salmonberry
Additional Range Information: Rubus ursinus is native to North America. Range may be expanded by planting. See states reporting wild blackberry.
External Links: USDAFS Additional Silvics - USDA Plants Database
All material © 2017 Virginia Tech Dept. of Forest Resources and Environmental Conservation; Photos and text by: John Seiler, Edward Jensen, Alex Niemiera, and John Peterson