Erect. Stems unbranched, either solitary or with a few in a cluster. Leaves round to lance-shaped, toothed; basal leaves on long stalks, 2–4 pairs sessile along stem, middle pair often larger than those below. Inflorescence consists of 1–5 flower stalks at stem top, each holding 1 or few flower heads. Flower heads have 8–13 ray flowers, 1/2–1 in. long, surrounding a slightly hairy central disk. Grows in moist woods, meadows, along mountain streams, mostly at lower elevations but can be found in high mountains. Highly variable species, generally more leafy than A. cordifolia.
- Rarity: Common
- Flowering Time: All Summer
- Life Cycle: Perennial
- Height: 12--24 inches
- Habitat: Meadow, West-Side Forest, East-Side Forest, Bog/Fen/Wetland
- Found In: Olympic Np, Mt. Rainier Np, N Cascades Np, Wallowas, West Gorge, Siskiyous
- Native: Yes