Perennials, 10-40+ cm; rhizomatous (rhizomes horizontal to suberect, branched). Stems 1 or multiple (crowded to subcespitose), floccose-tomentose or glabrescent. Basal leaves petiolate; blades lanceolate to oblanceolate, 30-60+ × 10-30+ mm, bases tapering, margins shallowly, evenly pinnatifid to pinnatisect or wavy (adaxial faces floccose-tomentose or subglabrescent). Cauline leaves gradually reduced (sessile; lanceolate to oblanceolate, pinnatisect to wavy). Heads 6-25+ in open or compact, corymbiform arrays. Peduncles bracteate, densely to irregularly floccose. Calyculi 0 or inconspicuous (bractlets red-tinged). Phyllaries 13, green, 5-7 mm, floccose proximally to glabrescent distally. Ray florets 6-8+; corolla laminae 5-7 mm. Disc florets 30-40+; corolla tubes 2.5-3 mm, limbs, 2.5-3.5 mm. Cypselae 2.5-3 mm, glabrous; pappi 4-5 mm. 2n = 46. Flowering late May-early Oct. Steep slopes, loose, dry rocky or gravelly soils, along streams, open forests, disturbed sites; 1600-3200 m; Colo., N.Mex., Wyo. Packera fendleri is abundant, almost weedy in the southern Rocky Mountains. It thrives in a wide range of elevations and in a wide variety of habitats; flowering times vary. It frequently grows in close association with other species of Packera and may hybridize with them.