General:
Perennial herb from a creeping rhizome; stems erect to trailing, 15-100 cm tall/long, angled but not winged, soft-hairy.

Leaves:
Alternate, pinnately compound with 4 to 10 mostly paired leaflets; leaflets narrowly egg-shaped to lance-elliptic, 2-12 cm long, 0.2-3 cm wide; tendrils usually well developed and branched, at least some grasping; stipules 2-lobed, lanceolate to linear, less than 1/2 as long as the leaflets.

Flowers:
Inflorescence a loose, stalked, axillary cluster of 2 to 7 pea-like flowers; corollas usually bluish-purple or reddish-purple, fading to tan, 13-27 mm long, the banner darker than the wings or keel, about as long as the wings and 1-3 mm longer than the keel, the banner-claw shorter than the blade; calyces 6-12 mm long, somewhat hairy, the lanceolate teeth about 1/2 as long as the tube.

Fruits:
Pods, 3-7 cm long, 4-9 mm wide, glabrous; seeds 4 to 12.

Source:  The Illustrated Flora of British Columbia