Perennial subshrubs, 10-70 cm tall, densely glandular hairy. Stem erect, much branched, unarmed. Leaves 3-foliolate, lower rarely 5-foliolate, upper rarely 1-foliolate; leaflets oblong, obovate, to broadly linear, 1-3 cm, base cuneate, apex acute. Flowers in lax, leafy racemes or panicles, solitary at nodes, or at tips of lateral branchlets; pedicel 5-20 mm; bract aristate. Calyx 8-12 mm; teeth linear-lanceolate, 2.5-4 × length of tube. Corolla yellow, with veins scarlet or purple, 12-20 mm. Legume linear-elliptic, 10-25 × 3-4 mm, 2-3 × as long as persistent calyx, beaked. Seeds 6-9, globose, minutely tuberculate. Fl. May-Oct.