Perennials, 20-60 cm. Leaves: basal 2-pinnate, 12-25 cm, lobes 5-15(-25+) × 0.5-1.5(-3+) mm; cauline 1-3(-5). Heads 3-8 per stem. Peduncles 6-15 cm. Phyl-laries whitish or yellowish, 8-10 × 4-7 mm. Ray florets 8; corollas white or pinkish, laminae 14-20 mm. Disc florets 60-150+; corollas yellowish, 3.5-4 mm, tubes 1.5-2 mm, throats campanulate, 1.5-2 mm, lengths 2-3 times lobes. Cypselae 3.5-4 mm, glabrous; pappi 0 or of 1-12+ scales 0.01-0.1 mm. 2n = 34.

Flowering Jun-Sep. Clays or igneous soils, openings in aspen, pine, and spruce woodlands; 2100-3000 m; Colo., N.Mex.