Rubus villosus is a perennial, half shrubby plant, pubescent and prickly. Its root is woody, knotty, and horizontal, and sends up a tall, branching, slender, prickly, more or less furrowed and angular stem, recurved at top, and from 3 to 6 feet high. Petals 5, white, ovate or oblong, concave, contracted into a short claw at base. Calyx short, with ovate, hairy segments, ending in an acuminate point, or a lanceolate leaflet. Rubus canadensis, sometimes called Low or Creeping blackberry, has a slender, prickly stem, procumbent, or trailing several yards upon the ground.
Petals obovate and twice as long as the calyx.
The leaves are trifoliate, or pedately 5-parted, evergreen, leathery, and almost smooth. The leaflets are sharply serrate, and of the ovate-oblong or lanceolate form. Flowers large, and from 1 to 3 to the peduncles. They blossom in March. History, Description, and Chemical Composition.