Herbs to 60 cm tall, perennial. Stem solitary, erect, simple, sparsely arachnoid. Basal and lower stem leaves petiolate; petiole 3-10 cm; leaf blade narrowly oblong, elliptic, or linear, 8-30 × 1-1.5 cm, abaxially pale green, gland-dotted, and glabrescent, adaxially dark green, base attenuate, margin subentire to sparsely denticulate, apex acute to acuminate. Middle and upper stem leaves few, sessile, linear, gradually smaller upward on stem, base semiamplexicaul. Capitula 1 or 2, long pedunculate. Involucre campanulate, ca. 2 cm in diam. Phyllaries in 5 or 6 rows, sparsely villous, apex long acuminate; outer phyllaries narrowly ovate-triangular, 5-6 × 1-1.5 mm, apically herbaceous and reflexed; inner phyllaries narrowly ovate-elliptic to linear, 10-12 × ca. 1 mm. Receptacle bristles 5-6 mm. Corolla blackish purple, ca. 1.5 cm, tube ca. 7 mm. Achene gland-dotted. Pappus in 1 row, pale yellowish brown, 1-1.1 cm. Fl. and fr. Aug.
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