Erect herbs to 1.2 m high, not leafier in lower 1/3 at anthesis. Taproot usually well-developed; secondary roots slightly fleshy. Stems nearly glabrous. Leaves 7–20 cm long, with l:w ratio c. 2.5–6, deeply lobate to pinnatisect, with 4–8 roughly triangular projections per side; segments generally retrorse, often proximally lobed; base petiole-like, without auricles; margin with scattered denticulations or teeth; upper surface ± glabrous; lower surface sparsely hispid or ± glabrous, green or purple. Capitula mostly numerous per stem; calycular bracteoles 3–6, 2–3 mm long; peduncle and calyculus not or slightly cobwebby at anthesis; involucre 7–11 mm long, c. 1.5–2.5 mm diam.; bracts 12–14, glabrous. Florets 40–60. Achenes narrowly obloid-ellipsoid, 2.5–3 mm long, pale brown, with papillose hairs in bands; l:w ratio of hairs c. 3. Pappus 8–13 mm long.
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