Perennials, 40–60 cm (caudices woody). Stems branched, pubes-cent. Leaves opposite or alternate; petioles 3–20 mm; blades 3-nerved from bases, deltate to lanceolate, 10–60 × 7–50 mm, bases cordate to truncate, margins crenate-dentate, apices acute, faces sparsely to densely pubescent, gland-dotted. Heads borne singly or in open, paniculiform arrays. Peduncles 20–50 mm, glandular-pubescent. Involucres cylindric to broadly campanulate, 12–14 mm. Phyllaries 40–60 in 5–6 series, greenish, 4–6-striate, unequal, margins narrowly scarious (apices acute to acuminate); outer narrowly lanceolate (glandular-pubescent), inner lanceolate (glabrous or tomentulose). Florets ± 60; corollas pale yellow, often purple-tinged, 9–10 mm. Cypselae 4–5 mm, hispidulous or glabrate; pappi of 32–36 white, barbellate bristles.
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