Herbage glabrous. Leaflets: blade ovate to linear-lanceolate. Flowers: sepals accrescent, lanceolate-ovate, 4-8 mm, glabrous; petals usually white, sometimes cream basally, aging or drying pink, obovate, 8-10 mm, as long as wide, glabrous; filaments 3-4 mm; anthers cream, 1 mm; style 3-4 mm. Nutlets ca. 3 mm, tuberculate (tubercles relatively low and wide). Flowering Mar-May. Seasonally wet meadows, rocky slopes and basins, often on serpentine soils; of conservation concern; 150-1700 m; Oreg. Subspecies gracilis occurs in the Rogue River Valley in Josephine and Jackson counties and in Douglas County.