- To +/- 10m tall, woody, with spines or prickles.
- Large, to 1m long, bipinnately compound. The leaflets toothed, ovate.
- Large, +30cm wide, +30cm tall, many flowered.
- Small, white. Petals distinct, 5, reflexed. Sepals 5.
- Black when mature, 5-8mm in diameter.
- July - September.
- Moist soils, woods, wooded slopes. Sometimes cultivated.
- Native to U.S.
Photograph taken at Kansas City Zoo, 6-24-99, and at Hanging Rock State Park, Stokes County, NC., 9-1-02.