Perennials, 30–100+ cm. Stems (from short caudices) single or multiple, branched at or near bases, pubescent throughout. Leaves usually opposite (distal sometimes alternate); sessile or subsessile; blades 3-nerved distal to bases, oblong to lance-oblong, 20–45 × 5–10 mm, bases cuneate, margins entire or serrate (teeth mostly proximal), apices acute, faces finely puberulent, gland-dotted. Heads in corymbiform arrays. Phyllaries 8–10 in 1–2 series, lanceolate (tapering toward apices), 2–5 × 0.5–1 mm, apices rounded to acute, abaxial faces puberulent, gland-dotted. Florets 5; corollas 3–3.5 mm. Cypselae 2.5–3 mm; pappi of 30–40 bristles 3–5 mm. 2n = 20, 30, 40.
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