Distribution: East of the Cascades in Washington; Washington south to southern California, east to Montana and Colorado.
Habitat: Dry soil, from the plains into the canyons and slopes of the lower mountains.
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Bumblebees, bees
Finely pubescent annual, the stems 1-4 dm. tall, simple or freely-branched, single or several.
Leaves mostly alternate, scabrous and brittle, lanceolate to ovate-lanceolate, entire to wavy margined to deeply lobed; lower leaves short-petiolate, upper leaves sessile, bracteate leaves opposite.
Flowers irregularly cymose in compact clusters; calyx lobes 5, 2 mm. long; petals 5, distinct, yellow, 3-6 mm. long; stamens 15-35, shorter than the petals; style 1, ovary inferior.
Capsule linear, 1-3 cm. long, 1.5-2 mm. thick.