Plants 40–90 cm. Stems 1–8, usually erect, rarely curved-ascending, pale, rarely reddish, robust, glabrous, eglandular. Leaves: basal (tufted), long-petiolate, blades (pale) broadly elliptic to obovate, 100–500 × 40–200 mm, rigid, margins entire or undulate, occasionally spinulose-serrate, eciliate; cauline reduced and becoming sessile distally, margins entire or sharply spinulose-serrate; faces glabrous. Heads borne singly or 3–12 in short, open corymbiform arrays (subtended by leaflike bracts). Peduncles 2–7 cm. Involucres broadly hemispheric, 20–32 × 25–40 mm. Phyllaries in 5–6 series, loosely appressed, ovate-oblong, unequal, margins pale, entire, eciliate, apices green, tip reflexed, faces glabrous. Ray florets 17–34; corollas inconspicuous, 7–13 mm. Disc florets 80–100; corollas 10–15 mm. Cypselae subcylindric, 6–11 mm, 4-angled, faces glabrous; pappi tawny or brownish, 9–13 mm. 2n = 36.
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