UW Burke Herbarium species comparison

Leaf blades 3-6 cm. long, bright green and shining, glabrous, mostly simple, cordate-ovate, to 3-lobed, the margins dentate-serrate;

petioles with curved prickles.

Flowers single or in pairs in the leaf axils;

calyx lobes 5, ovate-lanceolate, pointed, 6-9 mm. long, reflexed, usually purplish;

petals inconspicuous, pink to dull purple, narrowly elliptic, somewhat longer than the sepals;

stamens about 15, filaments slender, purplish;

pistils 4-9, pubescent.

Drupelets large, red;

seeds 3-4 mm. long, wrinkled.