Perennials, 150–260 cm (rhizomatous). Stems erect, strigose or hirsute. Leaves basal and cauline; opposite or alternate; petioles 0.5–1 cm; blades (3-nerved distal to bases) linear-lanceolate to lanceolate, 9–22 cm × 0.7–4 cm, bases cuneate, margins entire or sub-entire (usually slightly revolute), abaxial faces hispidulous to tomentulose, gland-dotted. Heads 1–15. Peduncles 1–13 cm. Involucres ± hemispheric, 13–18 mm diam. Phyllaries 25–35 (loose), lance-linear to lanceolate, 6–17 × 1.5–3 mm, apices acuminate, abaxial faces glabrate to sparsely strigose, gland-dotted. Paleae 5.5–6.5 mm, 3-(or 5-)toothed (distally strigose, gland-dotted). Ray florets 12–23; laminae 16–40 mm (abaxial faces gland-dotted ). Disc florets 100+; corollas 5–5.5 mm, lobes yellow or reddish; anthers dark brown or black, appendages dark. Cypselae 2.5–3 mm, glabrous; pappi of 2 (usually unequal) aristate scales 1.5–2.4 mm. 2n = 34.
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