Family, Crowfoot. Color, dull purple. Petals, smaller than the sepals, which are petal-like and give the color to the flower. Stamens, 5 or 10. Pistils, 5 to 15. Flowers, small, on short pedicels, 2 or 3 together, making long spikes or compound racemes along the slender branches. Leaves, on slender, long petioles, pinnate or bipinnate, the leaflets being again divided, all doubly serrate, pointed, of a glossy green. April and May.

Low, shrubby plants, 1 to 2 feet high, with yellow bark and root, both very bitter to the taste, found along shaded banks of streams from southwestern New York and Pennsylvania southward.