Perennials to c. 1.8 m high, usually glaucous, glabrous. Leaves to 20 cm long, with l:w ratio c. 2–4, undivided; base strongly cordate; margin entire or with scattered teeth. Capitula several to numerous per stem; calycular bracteoles 0–4, 1–3 mm long; involucre 5–7 mm long, c. 3–5 mm diam.; bracts 12–16. Florets numerous; ligulate florets 6–9; ligule 8–15 mm long, 4-or 5-veined; disc florets with corolla limb c. as long as tube. Achenes obloid to narrowly obloid, 2–4 mm long, strongly ribbed and ridged, glabrous, or with papillose hairs restricted to grooves along summit of ridges. Pappus caducous, 3–5 mm long; bristles scabridulous, with length of projections less than diameter of bristle.
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