Erect, forming colonies from spreading underground roots. Stems hairless below, curly hairs in inflorescence. Leaves mostly basal, large, more or less round, deeply palmately divided, 5–10 lobes, toothed; medium green on upper surface, lighter underneath. Inflorescence flat-topped with 5 or more flowers. Flower sepals 3–7, white, falling off early; showy fluffy flowers have 50–70 white stamens, 10 or more pistils. Grows in moist shaded forests, along streams, at mid- to high elevations. Foliage very similar to that of closely related tall bugbane, Cimicifuga elata.
- Rarity: Locally Common
- Flowering Time: Early Summer
- Life Cycle: Perennial
- Height: 24--40 inches
- Habitat: West-Side Forest, East-Side Forest, Moist Riverbanks
- Found In: West Gorge, Olympic Np, Mt. Rainier Np, N Cascades Np, Wallowas
- Native: Yes