Himalaya blackberry Rosaceae Rubus
Leaf: Alternate, palmately compound (usually 5 leaflets), persistent (often barely); leaflets oval, 1 1/2 to 3 inches long, dark green above with a heavy white bloom below, margins serrate. Rachis and petiole armed with heavy, recurved prickles.
Flower: Perfect, complete, large (about 1 inch in diameter), white to pinkish, and borne in clusters of 5 to 20.
Fruit: Black aggregate of drupelets about 1 inch long; adheres to torus (central core) when removed from plant. Very edible.
Twig: Stout, heavily ribbed; purplish-red, armed with heavy, red, recurved prickles.
Form: An erect, spreading, or trailing evergreen shrub that gets very large and grows in dense, impenetrable thickets. Young stems are erect, but arch as they lengthen, eventually touching the ground and rooting at the nodes.
Looks like: evergreen blackberry - whitebark raspberry - salmonberry - wild blackberry