Stems 30–100 cm. Leaves: basal axils ± densely tomentose, terminal lobes 15–50 mm; cauline (0–)2–5. Heads (2–)6–40. Peduncles 1–15 cm. Phyllaries 6–10 mm. Florets 15–45; corollas yellowish, 2.5–4.5 mm, throats 1.5–2.5 mm, lengths 3–5 times lobes; anthers 2.5–3 mm. Cypselae 4.5–6 mm, hairs 0.4–1 mm; pappi 0.2–1 mm. 2n = 34.

Flowering May–Sep. Sands, clays, gravels; 100–300+ m; Idaho, Oreg., Wash.