Distribution: Occurring in the Cascades Range in Washington, where endemic.
Habitat: Open, exposed places, usually on rocks or in gravelly soil, at moderate elevations in the mountains.
Growth Duration: Perennial
Conservation Status: Not of concern
Glabrous perennial from rhizomes, with numerous sterile shoots and basal rosettes, the flowering stems 5-20 cm. tall.
Leaves alternate, ovoid to ellipsoid, slightly flattened, 4-9 mm. long, incurved, mostly deciduous by flowering time.
Flowers mostly in compact cymes; sepals 5, triangular-lanceolate, 2-3.5 mm. long; petals 5, yellow, distinct, lanceolate and pointed, 6-7 mm. long; stamens 10, spreading, about 2 mm. shorter than the petals, 5 attached to the base of the petals.
Follicles 5, erect, united at the base, each with a small gland at the base, and tipped by the erect or divergent, tapered style.