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Perennials, 20–60(–80+) cm. Stems simple or distally branched. Basal leaves: petioles 50–80(–200+) mm, expanding into obovate to spatulate blades 50–80(–120+) × 15–25(–35+) mm, margins not lobed, usually toothed, rarely entire. Cauline leaves petiolate or sessile; blades oblanceolate to lanceolate or linear, 50–120+ × 8–22+ mm, margins of mid-stem leaves usually entire proximally, regularly serrate distally. Involucres 18–28+ mm diam. Phyllaries (the larger) 2–3 mm wide. Ray florets 21–34+; laminae 20–30(–40+) mm. Ray cypselae 2–3(–4) mm, apices usually bare, rarely obscurely auriculate. 2n = 90, 108.
