Perennials, 60–100+ cm (rhizomes weakly spreading). Herbage glabrous or sparsely and unevenly floccose or tomentose. Stems single (erect). Leaves evenly distributed; petiolate; blades ovate to lanceolate, (7–)10–20+ × 4–6(–7) cm, bases ± tapered, margins dentate or denticulate (denticles callous; distal leaves smaller, clasping, bractlike). Heads 4–12 in open, cymiform arrays. Calyculi of 5–10 bractlets (0.5–2.5 mm). Phyllaries ± 13, 4–6(–7) mm, tips black. Ray florets ± 8; corolla laminae 5–8 mm. Cypselae glabrous.
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