Plants 0–180 cm, caudex or slender rhizomes. Stems 1–5+, glabrous, sparsely strigose in arrays. Leaves: basal petiolate; blades broadly elliptic to ovate, 100–350 × 60–120 mm (including petioles), bases truncate to obtuse, apices acute to acuminate, margins sharply serrate, glabrous; distal cauline blades spreading to ascending, linear-elliptic, 30–50 × 6–15 mm. Heads 25–50+, in elongate, paniculiform arrays, proximal branches recurved-secund, sometimes elongate. Peduncles 1.5–3 mm, glabrate to moderately short hispido-strigose, bracteoles 1–5, linear-lanceolate grading into phyllaries. Involucres campanulate, (4.5–)5–7 mm (much exceeded by pappi). Phyllaries in 3–4 series, linear-lanceolate, strongly unequal. Ray florets 4–9; laminae 4–5 × 1.5–2.5 mm. Disc florets 9–11; corollas 4–5 mm, lobes ca. 1.5 mm. Cypselae (brown, ribs dark brown) 3 mm, sparsely short-strigose; pappi 3–4 mm. 2n = 54.
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