Family, Pulse. Color, blue, becoming purplish, occasionally white. Calyx, short, with unequal teeth. Corolla, papilionaceous. Flowers, 2 inch long in densely flowered racemes, not drooping, 1-sided, axillary, long-peduncled. Leaves, sessile, pinnate, of 10 to 12 pairs of sharply pointed leaflets, terminated by tendrils. June to August.
A climbing, herbaceous, perennial vine, softly downy along the stems, found not infrequently along roadsides and in borders of thickets or in fields, where its bright blue flowers are conspicuous. From New England to New Jersey, Kentucky, and westward.