Distribution: Occurring in the east end of the Columbia River Gorge in Klickitat County in Washington; Klickitat County, Washington to Hood River and Wasco counties in Oregon.
Habitat: Dry, open areas in sagebrush and grasslands.
Conservation Status: Not of concern
Robust perennial from a large, woody taproot and short, branched crown, the many stems 4-30 cm. tall, usually grayish-silky.
Leaves alternate, pinnate, numerous, crowded, 7-30 cm. long; leaflets 17-37, linear to oblong-oblanceolate, 3-25 mm. long and 1-4 mm. wide, with fine, appressed hairs on both surfaces or glabrous above; stipules triangular, 3-7 mm. long, clasping or free.
Inflorescence of lax, 7- to 35-flowered racemes, the peduncles exceeding the leaves; flowers pea-like, 13-23 mm. long, white, drooping; calyx tube bell-shaped, 1.5 times as long as thick; calyx 11-15 mm. long, the 5 teeth 4.5-7.5 mm. long; banner reflexed; wings 2-4 mm. longer than the rounded keel; stamens 10.
Pods sessile, pubescent, fleshy when green, obcompressed, nearly straight, 15-30 mm. long and 3-6 mm. wide and twice as thick, abruptly acute, 1-celled, but the lower suture nearly dividing the cavity.