Distribution: Occurring east of the Cascades crest in Washington, where endemic to Chelan County.
Habitat: Rocky slopes with ponderosa pine, at about 1000 feet elevation.
Growth Duration: Perennial
Conservation Status: Endangered in Washington (WANHP)
Perennial from a taproot, the stems numerous, 2-4 dm. tall; herbage bristly.
Leaves chiefly cauline, rather numerous, not much reduced upward, 2-5 cm. long and 3-11 mm. wide; lower leaves petiolate, oblanceolate, the others linear-oblong to lanceolate and sessile.
Inflorescence open and terminal, the flowers with long pedicels; calyx cleft to the base; corolla showy, white, 5-lobed, the limb 13-20 mm. wide; appendages opposite the corolla lobes at the top of the tube covered with blunt projections; stamens not exerted; style shorter than the nutlets.
Nutlets 4, attached to the base of the style, with marginal prickles united nearly their length into a border; intramarginal prickles about 15, somewhat smaller than the others.