Stem herbaceous, 12–18 in. high, erect, sparingly branched, subglabrous. Stipules linear-subulate, 1/4 in. long. Petioles erecto-patent, 1/4– 1/2 in. long. Leaflets 19–21, oblanceolate, 1/2– 3/4 in. long, 2 to 3 lines broad, the apex rounded and mucronate, the lateral ones opposite, 1/4– 3/8 in. apart, both sides thinly silky. Flowers in nearly sessile lax axillary racemes which ultimately about equal the leaves. Calyx 1 1/2–2 lines long, very silky, the teeth setaceous, reaching down nearly to the base, the lowest much the longest. Corolla rose-coloured, slightly exceeding the calyx. Pod linear-mucronate, 1–1 1/4 in. long, 1/8 in. broad, erecto-patent, subtetragonous, thinly silky, 12–15-seeded.
