Perennial herb, up to 250 mm high. Stems decumbent. Leaves pinnate with 14-18 leaflets, oblong, obtuse or retuse, patently pubescent on one or both sides; stipules ovate-acute. Flowers: raceme capitate, 5-8-flowered; peduncles much longer than leaf; calyx with black hairs; corolla purplish red and white; Jul.-Sep. Pods glabrous, many-seeded, ± compressed.