Distribution: Occurring east of the Cascades crest chiefly in the Columbia River Basin and Columbia River Gorge in Washington; south-central British Columbia to north-central Oregon.
Habitat: Dunes and sandy barrens, low elevation
Conservation Status: Not of concern
Silvery perennial from a branched crown, the several stems 2-5 dm. tall, the base usually buried in the sand.
Leaves alternate, pinnate, 3-12 cm. long; leaflets 15-21, linear to oblong-lanceolate, 15-30 mm. long and 2-4 mm. wide; stipules triangular, 2-4 mm. long.
Inflorescence of 10- to 30-flowered racemes, the peduncles about equal to the leaves; flowers spreading-ascending, 10-14 mm. long; calyx 5-7 mm. long, blackish-puberulent, the 5 teeth about 1/4 as long as the tube, the upper 2 the broadest; banner erect, pure white to greenish-white; wings pale purplish, 1 mm. longer than the purple-tipped keel; stamens 10.
Pod stipitate, pendulous, nearly glabrous, fleshy, the body 2-3 cm. long and 7-9 mm. wide, strongly compressed, elliptic in cross section, 1-celled, curving nearly to a half circle and becoming purplish-mottled with age.