Rubus discolor is a prickly shrub, Stems to several m long, prostrate, growing flat along open ground or scrambling, (not erect and arching like R. allegheniensis) coarse, almost round in cross section or vaguely ribbed, armed with flattened, curved prickles, primary canes finely hairy at tips.
Leaves alternate, palmately compound, whitish-wooly below, bright green above, leaves of primary stems 5-parted, leaflets to 12 cm long, broadly egg-shaped to widest above middle, margins sharply toothed, tip pointed; inflorescence on secondary stems, branched with flat prickles to 1 cm long.
Flowers white to pinkish, calyx whitish-wooly.
Fruit fleshy, becoming black, multiple 1-seeded drupes, 1.5 cm thick, June-Aug.
Wetland status: NL.
Frequency in NYC: Infrequent.
Habitat: Escaped from cultivation in weedy areas or at old house sites.