Family, Crowfoot. Color, deep, purplish blue. Sepals, 5, one with a long spur at its base. Petals,
4, in pairs, the upper pair projecting long spurs into the spur of the sepal, the lower pair raised on short claws. Pistils, 3, making as many erect, many-seeded pods. Flowers, softly hairy, in long, terminal racemes, showy. Leaves, deeply cleft into 3 to 5 divisions which are acute at apex, wedge-shaped. July.
Rich soil, mostly woods, from Pennsylvania to Minnesota and southward.