Herbs 35-55 cm tall, perennial. Stem solitary, 3-5 mm in diam., erect, simple, winged, covered at base with lacerate remains of leaf sheaths. Leaves sessile, narrowly ovate-elliptic, 7-10 × 1.5-2 cm, abaxially grayish white and sericeous-tomentose, adaxially dark green and pubescent, base decurrent, margin dentate, apex acute. Capitula 10-20(-30), in a subglobose, densely congested corymbiform synflorescence 4-5 cm in diam., shortly pedunculate. Involucre campanulate to globose, 0.8-1.2 cm in diam. Phyllaries in 6-8 rows, basally brown to straw-colored, apically green, villous, apex acute to acuminate; outer phyllaries narrowly triangular-ovate, 4-6 × ca. 2 mm; middle phyllaries narrowly ovate-elliptic, 6-8 × 2-3 mm; inner phyllaries linear, 8-12 × 1.5-2 mm. Corolla purple, ca. 1.2 cm, tube ca. 6 mm, limb ca. 6 mm, lobes ca. 3 mm. Pappus dirty white; inner bristles ca. 8 mm. Fl. Aug.
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