Distribution: Known only from Asotin County in Washington; Washington south to northeastern Oregon, east to Custer County, Idaho.
Habitat: Sagebrush plains to grassy or rocky slopes, often on talus.
Conservation Status: Not of concern
Mostly glabrous, greenish perennial from a woody taproot and branched crown, the stems many, 3-6 dm. tall, angled and grooved.
Leaves alternate, pinnate, 6-10 cm. long; leaflets 7-19, remote, linear, 5-20 mm. long and 1 mm. broad; stipules lanceolate, 2-5 mm. long.
Inflorescence of loosely 10- to 20-flowered racemes, on peduncles exceeding the leaves; flowers pale yellowish, spreading to reflexed, 11-16.5 mm. long; calyx bell-shaped, 1/3 as long as the corolla, the 5 teeth triangular, nearly 1 mm. long; wing petals with a narrow blade 2-4 mm. longer than the rounded, purplish keel; stamens 10.
Pod with a slender stipe as long to twice as long as the calyx, the body membranous, glabrous, obovoid, terete in cross section, 6-22 mm. broad.