Distribution: Occurrng on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, southern Great Plains, and eastern North America.

Habitat: Disturbed areas, riparian zones, and forest edges at low elevations.

Flowers: May-August

Origin: Introduced from Eurasia

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Apomixis, bumblebees, bees, beetles

Strong, more or less evergreen perennial, the stems up to 10 m. long, ascending to sprawling, armed with strong, flattened prickles.

Leaves mostly 5-foliate, the leaflets broadly oblong to ovate, short acuminate, 6-12 cm. long, sharply serrate, bright green and glabrous above, grayish-woolly beneath.

Inflorescence a flat-topped panicle; calyx woolly, the 5 segments reflexed, lanceolate, 8-12 mm. long; petals 5, white to reddish tinged, oval-obovate, 10-15 mm. long; stamens 100 or more; pistils many, the style slender, glabrous.

Drupelets coherent, and with the fleshy receptacle forming a nearly globose blackberry 1.5 cm. thick.