Erect shrub up to 2 m. tall, us. less, with spreading branches; branchlets subfastigiate, striate, 1-2 mm. diam., glab., plano-convex. Lvs (1)-3-(5)-foliolate; lflts obcordate-cuneate, sinus shallow to rather deep. Infl. us. cop. of (3)-5-(10)-fld, congested racemes on pubescent peduncles 2-3 mm. long. Fls ± 5 × 4 mm., on pubescent pedicels ± 1 mm. long. Calyx c. 1 × 1 mm., glab.; teeth minute, ciliolate. Standard broad, slightly > keel, dark purple at base, purple-veined; wings white, ± = keel, purple-veined, auricles rounded; keel whitish, purple-veined, auricles rounded. Ovary glab. Pods (6)-8-(10) × (3)-4-5 mm., compressed, ± ovate-oblong, sts slightly curved, brown to almost black; beak 1-2 mm., straight, ± obliquely placed. Seeds (1)-2-4-(6), pale yellow, ± heavily black-mottled.