Perennial herb; stems 1-2 m tall, sparsely stellate-pubescent to glabrate; leaves deeply lobed, 5-10 cm long, sparsely pubescent, coarsely dentate; inflorescence an interrupted spiciform raceme, coarsely pubescent; bracts of the involucel lanceolate, 8-12 mm long; calyx about 15 mm long; petals 2-3 cm long, pink drying purplish or lavender, densely villous on the margins of the claws; staminal column hirsute basally, about 1.5 cm long; fruits subglobose to oblate, about 1 cm long; mericarps about 12, coarsely hirsute; seeds 2.5-3 mm long. Flowers in July and August.