Shrub up to 3 m. tall, with spreading branches. Branchlets much-compressed, glab., 2-4 mm. wide. Lvs on young plants (1)-3-5-foliolate; lflts obcordate, c. 5 × 5 mm. Infl. of 1-3 racemes per notch on ± pilose peduncles c. 10 mm. long, (3)-5-(7)-fld. Fls ± 4 mm. long, on pubescent pedicels c. 1 mm. long. Calyx c. 1 × 1 mm., sparsely hairy; teeth minute, triangular. Standard flushed and veined with purple; keel white, purple-flushed at apex, auricles rounded; wings white, auricles bluntly pointed. Ovary glab. Pods ± compressed, about oblong to suborbicular, (7)-9-10 × (3)-4-5 mm., black; beak rather stout to slender, c. 2 mm. long. Seeds 1-2, orange-red, sts ± black-mottled.