Perennials, 20-50 cm; rhizomatous, fibrous-rooted, caudices simple, thick. Stems erect to basally ascending, proximally glabrous, distally sparsely to densely strigillose, eglandular. Leaves basal (persistent) and cauline; basal and proximal cauline blades spatulate, 50-200 × 15-45 mm, little reduced distally until distal to midstems, margins entire or shallowly serrate to denticulate, finely ciliate, faces glabrous, eglandular; mid blades ovate to cordate (bases clasping to subclasping). Heads 1. Involucres 6-8 × 12-20 mm. Phyllaries in 2-3(-4) series, glabrous, densely minutely glandular. Ray florets 30-50; corollas white, 13-25 mm (mostly 1.5-3 mm wide), laminae coiling. Disc corollas 4-5 mm. Cypselae 2.5-3 mm, subterete, (4-)5(-6)-nerved, faces sparsely strigose; pappi: outer of setae, inner of 20-30 bristles. Flowering May-Jul. Drainage of Columbia River, steep north-facing slopes with little soil, sometimes in seepage, commonly with Douglas fir; of conservation concern; (60-)500-1200(-1500) m; Oreg., Wash.