Perennials, 10-40+ cm; rhizomatous (rhizomes horizontal to erect). Stems 1 or 2-5 (often scapiform), loosely clustered, glabrous or leaf axils sparsely hairy. Basal leaves (and proximal cauline) petiolate; blades obovate to ovate or sublyrate, 30-60+ × 10-40+ mm, bases tapering, margins deeply dissected or pinnatifid, ultimate margins crenate to crenate-dentate. Cauline leaves abruptly reduced or 0 (sessile; ovate to obovate, dissected or pinnatifid). Heads 4-10+ in subumbelliform cymiform arrays. Peduncles inconspicuously bracteate or ebracteate, glabrous. Calyculi 0 or inconspicuous. Phyllaries (8-)13, light green (tips yellowish), 4-7 mm, glabrous. Ray florets 5 or 8; corolla laminae 5-10 mm. Disc florets 20-30+; corolla tubes 2.5-3.5 mm, limbs 2.5-3.5 mm. Cypselae 1-1.5 mm, glabrous; pappi 4-4.5 mm. 2n = 40.

Flowering early Jul-mid Aug. Exposed slopes, rocky or gravelly soils; 700-2000 m; Oreg., Wash.

Packera flettii is known from the Olympic Mountains and near Mt. Rainer in Washington and coastal mountains of Clatsop County, Oregon. It has a chromosome number unique in the genus and is not known to hybridize with other species of Packera.