Stem. - Hairy, three to six feet high. Leaves. - Divided into three somewhat oblong leaflets. Flowers. - Papilionaceous, dull purplish-pink, growing in densely flowered racemes. Pod. - Flat, deeply lobed on the lower margin, from one to three inches long, roughened with minute hooked hairs by means of which they adhere to animals and clothing.
Great masses of color are made by these flowers in the bogs and rich woods of midsummer. They are effective when seen in the distance, but rather disappointing on closer examination, and will hardly bear gathering or transportation. They are by far the largest and most showy of the genus.