Corolla yellow with standard blue or greenish-brown at back; standard 1.5–2.2 × 1.4–1.5 cm, obovate, with claw 1.5–3 mm long, slightly auricled, densely appressed velvety pilose outside; wings oblong, blade 12–13 mm long with claw 2–3 mm long; keel 13 × 5.5 mm, obovate-oblanceolate, with claw 4 mm long.
Inflorescences terminal and axillary, dense and ± hidden among the leaves, 2.5–4 cm long including short peduncle; pedicels 3–5 mm long; bracts 4 × 2 mm, ovate-attenuate, tomentose.
Calyx densely white pubescent; tube c. 4 mm long; teeth very unequal, upper pair joined almost to apex, 2 mm long; laterals 2 mm long; lower tooth 3–4 mm long.
Seeds dark reddish-brown, 6 × 4.5 × 1.5 mm, oblong-ellipsoid in outline; hilum c. 5 mm long with rim aril c. 1 mm at its maximum width.
Pods 2.7 × 1.2 cm, narrowly obovate-elliptic, strongly compressed, densely appressed hairy.
Subshrub 50–90 cm tall, much branched, with pubescent to velvety stems.