Perennials but sometimes appearing biennial, 35–110 cm; taproots, sometimes with root sprouts. Stems 1–few, erect, distal 1/2 nearly naked, loosely arachnoid; branches 0–5(–10), stiffly ascending. Leaves: blades linear to oblong or narrowly elliptic, 15–25 × 1–4 cm, coarsely toothed to shallowly pinnatifid, lobes undivided or coarsely few-toothed, main spines 3–6 mm, abaxial faces often ± glabrate, loosely arachnoid when young, adaxial glabrous or sparingly villous with coarse, multicellular trichomes; basal sometimes absent at flowering, petiolate; principal cauline sessile, progressively reduced distally, bases clasping or ± decurrent; distal cauline few, widely separated, bractlike. Heads borne singly or less commonly 2–5(–10) in open, corymbiform arrays. Peduncles 5–30 cm (elevated above cauline leaves, not subtended by ring of involucre-like bracts. . Involucres broadly cylindric to campanulate, 2.5–4 × 1.5–4 cm, loosely arachnoid, ± glabrate. Phyllaries in 6–10 series, imbricate, ovate or lanceolate (outer) to linear-lanceolate (inner), abaxial faces with prominent glutinous ridge, outer and middle tightly appressed, margins spinulose-serrulate, spines ascending, 0.5–2 mm; apices of inner flat, linear-acuminate. Corollas pink-purple, 22–45 mm, tubes 10–23 mm, throats 8–14 mm, lobes 7–10 mm; style tips 4–5 mm. Cypselae light brown, 5–5.75 mm, apical collars paler than body, ca. 0.75 mm; pappi 20–40 mm. 2n = 28, 32.
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