Rubus allegheniensis - Highbush Blackberry
A multi-stemmed shrub, 3-6 ft. tall and between 6-12 ft. wide. Commonly forms broad colonies. Erect branches become arching. Bark is purplish-red and armed with prickles. Dark green summer foliage is palmately or pinnately compound, becoming orange, red and purple in fall. Loose, terminal clusters of five-petaled flowers are followed by thimble-shaped, raspberry-like, black berries.The Highbush Blackberry is a member of the family Rosaceae.