Distribution: Known only from North Whitman County and south Spokane County, Washington.
Habitat: Moist bottom lands.
Conservation Status: Threatened in Washington (WANHP)
Taprooted perennial with clustered stems 3-8 dm. tall, glandular-hairy in the inflorescence but otherwise glabrous.
Leaves alternate and pinnate, all cauline, short-petiolate, the leaflets 11-17, linear, well spaced, 1.5-5 cm. long and up to 2 mm. wide.
Inflorescence branched and fairly open, the individual flowers with short pedicels; calyx herbaceous, 3-6 mm. long, the 5 lobes about equal to the tube; corolla white, broadly bell-shaped, 9-14 mm. long, the 5 lobes longer than the tube; stamens equaling the corolla; style 3-parted; ovary superior.