Dwarf robust shrub 5-15 cm. tall, with close-set erect branches and branchlets arising from stout stock ± 1 cm. diam., forming hard patches up to ± 2 dm. diam. Branchlets c. 2-4 mm. wide, much-compressed, slightly plano-convex, rigid, grooved, obtuse to subacute at apex. Infl. of solitary or paired lax racemes, 2-5-fld, on slender pilose peduncles. Fls 6-10 × 4-6 mm., on subfiliform pilose pedicels ± 5 mm. long. Calyx c. 3 × 2 mm., appressed-hairy, teeth triangular, acute; standard white, purple-veined, with purple basal blotch; keel ± = standard, c. 3 mm. wide, auricles rounded; wings ± 1 × 1 mm., whitish with basal greenish blotch, auricles rounded. Ovary glab. Pods ± 15 × 4 mm., very dark brown to black, ± wrinkled, subfalcate; beak ± 1 mm., stout, slightly curved. Seeds 8-12, ± 2 mm. diam., yellowish, black-mottled.