Cauline leaves: blade broadly ovate to lanceolate, margins usually entire, rarely proximalmost dentate. Flowers: sepals 11-16 mm; petals 11-16 mm, claw 6-9 mm; gynophore 12-20 mm, pubescent basally. Fruits 3-8 cm; ovules 26-34 per ovary. Seeds 2.5-4.5 mm. 2n = 56. Flowering Apr-Jul. Barren rocky hillsides, gravelly knolls, badlands, dry prairies, arroyos, dry washes, shaley sandstone, sagebrush and pinyon-juniper communities, shale slopes and cliffs; 300-2700 m; Colo., Kans., Nev., Utah, Wyo.