Aerial shoots 10-30(-40) cm, from caudex-like tubers, tubers ascending to vertical. Basal leaves 1-3(-5), 1-2-ternate; petiole 5-7 cm; terminal leaflet sessile, rarely petiolulate, irregularly oblanceolate, (1.5-)2-3(-3.5) × 1-2(-2.5) cm, base narrowly cuneate, margins incised to dissected on distal 2/3, apex broadly acute, surfaces nearly glabrous; lateral leaflets 1-2×-parted and/or-lobed; ultimate lobes 4-8(-12) mm wide. Inflorescences 2-3(-5)-flowered cymes or flowers solitary; peduncle proximally nearly glabrous, distally villous; involucral bracts primarily 3, (1-)2-tiered, simple, ±similar to basal leaves, pinnatifid, 1.5-5.5 cm (primary involucral bracts 2-5.5 cm, secondary involucral bracts 1.5-3.5 cm), bases distinct, broadly to narrowly cuneate to clasping, margins irregularly serrulate and pinnatifid on ca. distal 1/2, apex narrowly acute to acuminate, surfaces thinly pilose; segments primarily 3, linear to pinnatifid; lateral segments 1-2×-parted and/or-lobed; ultimate lobes 1.5-2.5 mm wide. Flowers: sepals 8-10, pink to white, linear-oblong, 10-14(-20) × (2-)3-5(-6) mm, sparsely hairy; stamens 50-60. Heads of achenes fusiform; pedicel (5-)7-15(-22) cm. Achenes: body orbiculate, flat, 2.5-3.5 × 2-2.5 mm, not winged, densely villous; beak straight, ca. 1.5 mm, minutely puberulous, not plumose. 2 n =16.
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