Distribution: Occurring in eastern portion of Washington; Washington east to Idaho and Montana.
Habitat: Gravelly stream banks and hillsides.
Conservation Status: Not of concern
Gray-stellate perennial herb from a branched crown, the many, simple stems erect to decumbent, 1-2 dm. tall.
Basal leaves 3-6 cm. long, the blades entire, obovate to nearly round, narrowed abruptly to broad petioles 2-3 times as long; cauline leaves alternate, several, much reduced, oblanceolate.
Inflorescence of many-flowered, elongate, bractless racemes; pedicles 6-20 mm. long, ascending to reflexed, somewhat S-shaped; sepals 4, purplish, stellate, the outer pair slightly saccate at the base; petals 4, yellow, spatulate, 5-11 mm. long; stamens 6; style 4-7 mm. long.
Silicles strongly inflated, obcompressed, obtuse to truncate at the base, 5-7 mm. long and slightly wider, with a broad, open, apical sinus about 2 mm. deep.