Perennials, 40-60 cm (caudices woody). Stems branched, pubes-cent. Leaves opposite or alternate; petioles 3-20 mm; blades 3-nerved from bases, deltate to lanceolate, 10-60 × 7-50 mm, bases cordate to truncate, margins crenate-dentate, apices acute, faces sparsely to densely pubescent, gland-dotted. Heads borne singly or in open, paniculiform arrays. Peduncles 20-50 mm, glandular-pubescent. Involucres cylindric to broadly campanulate, 12-14 mm. Phyllaries 40-60 in 5-6 series, greenish, 4-6-striate, unequal, margins narrowly scarious (apices acute to acuminate); outer narrowly lanceolate (glandular-pubescent), inner lanceolate (glabrous or tomentulose). Florets ± 60; corollas pale yellow, often purple-tinged, 9-10 mm. Cypselae 4-5 mm, hispidulous or glabrate; pappi of 32-36 white, barbellate bristles. Flowering Aug-Oct. Oak woodlands, canyons, dry mountain slopes; 1500-2700 m; Ariz., N.Mex.; Mexico.