Distribution: Known historically in Washington from south-central part of the state; Saskatchewan to Mexico, west to Idaho and California.
Habitat: Hard-packed soil in swales or around vernal pools in the plains and lower foothills.
Conservation Status: Historical in Washington (WANHP)
Tufted, acaulescent, sub-glabrous perennial.
Leaves basal, in rosettes, oblanceolate, 5-20 cm. long and up to 15 mm. broad, the lower third pinnatifid with backward-angled lobes, the upper portion entire or wavy-dentate.
Flowers sessile; calyx tube purplish, slender, 2-12 cm. long, the 4 lobes reflexed, free or partly fused and turned to one side; petals 10-20 mm. long, yellow, aging to purplish; stamens 8; stigma with 4 linear lobes 3 mm. long; ovary inferior, 4-celled.
Capsule woody, ovoid, 10-20 cm. long, conspicuously winged.