Perennials, 20–65 cm (taproots deep, woody, caudices swollen, branched, often covered by old leaf bases). Stems 1–5, erect, stout, branched near or beyond middles, tomentulose (at least proximally). Leaves basal and cauline. petiolate; blades elliptic to lanceolate, 8–40 × 0.5–6(–11) cm, margins deeply pinnately lobed, lobes 5–10 pairs, usually lobed (± halfway to midveins, lobes entire), apices long-acuminate, faces ± tomentulose. Heads 30–70(–100+), in compound, corymbiform arrays . Calyculi of 5–7, triangular, tomentulose bractlets 1–2 mm. Involucres cylindro-campanulate, 8–16 × 2–3 mm. Phyllaries 5–8, (medially green) lanceolate, 8–12 mm, (margins yellowish, often scarious), apices acute (ciliate), abaxial faces usually glabrous, sometimes sparsely tomentulose, adaxial glabrous. Florets 5–10(–15); corollas yellow, 10–18 mm. Cypselae pale yellowish brown, subcylindric, 6–9 mm, apices ± narrowed (not beaked), ribs 12; pappi white, 6–9 mm. 2n = 22, 33, 44, 55, 88.
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