Perennials, 30–80 cm. Stems usually 1, usually unbranched distally, weakly winged, glabrous proximally, glabrous or sparsely hairy distally. Leaves usually glabrous, rarely sparsely hairy; basal blades obovate to narrowly oblanceolate, usually entire or undulate to un-dulate-serrate; proximal and mid blades usually narrowly lanceolate to narrowly oblanceolate, usually entire, sometimes toothed; distal blades lance-linear, entire. Heads 1(–3) per plant, usually borne singly. Peduncles 2–23 cm, usually glabrous, sometimes sparsely hairy. Involucres hemispheric, 10–17 × 15–27 mm. Phyllaries glabrous or sparsely hairy. Ray florets 13–30, neuter; corollas yellow, 15–21 × 5–10 mm. Disc florets 150–650(–800+); corollas yellow proximally, yellow to yellow-brown distally, 4.6–6 mm, lobes 5. Cypselae 1–1.5 mm, glabrous; pappi of usually 8 entire or lacerate, non-aristate scales 1.5–2 mm. 2n = 34.
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