Stems (20-)30-60 cm. Leaves: basal axils ± densely tomentose, terminal lobes 3-15 mm; cauline 0-3. Heads 3-8. Peduncles 2-12 cm. Phyllaries 6-10 mm. Florets 20-70+; corollas yellowish or whitish, 4-6 mm, throats 2-3 mm, lengths (2.2-)3-8 times lobes; anthers 3-3.5 mm. Cypselae 5-6 mm, hairs 1-2 mm; pappi 1.2-2.5 mm. 2n = 34, 68. Flowering May-Sep. Sands, clays, rocks (limestones, schists, volcanics); 1500-2700 m; Ariz., Calif., Nev., N.Mex., Utah; Mexico (Baja California).