Herbs 12-80 cm tall, perennial. Stem solitary, 1-2 mm in diam., erect, usually simple. Basal and lower stem leaves petiolate; petiole 2-9 cm; leaf blade narrowly elliptic, 5-12.5 × 2-4.5 cm, pinnatisect, both surfaces green, abaxially glabrous, adaxially sparsely strigose; lateral segments 6-11 pairs, linear, 10-20 × 3-6 mm, margin revolute and entire, apex acute and mucronate; terminal segment linear, 5-20 × 2-3 mm. Middle stem leaves much smaller and with fewer segments. Upper stem leaves linear-filiform, 1-2 × 0.2-0.4 cm, margin entire, apex caudate. Capitulum solitary, sometimes 2 or 3, terminal on stem. Involucre obconic, 1.3-1.6 cm in diam. Phyllaries in ca. 5 rows, sparsely arachnoid tomentose, glabrescent, apex long acuminate; outer phyllaries narrowly ovate-elliptic, 5-6 × 1-2 mm, basally straw-colored, apically green; middle phyllaries narrowly ovate-elliptic, 8-13 × 1.5-2 mm; inner phyllaries narrowly elliptic, 12-14 × 1-1.5 mm, apically brown. Corolla purple, 1.4-1.6 cm, tube 7-8 mm, limb 6.5-7 mm, lobes 4.5-5 mm. Achene blackish brown, obconic, ca. 3 mm, glabrous. Pappus straw-colored; outer bristles 2-4 mm, scabrid, sometimes very few; inner bristles 1-1.1 cm. Fl. and fr. Jul-Aug.
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