A shrub or small tree. It grows 14 m high. The bark is smooth and grey. The crown is spreading. The young stems have soft brown hairs. The leaves have dense brown hairs. There are 2-5 pairs of leaflet stalks and 5-10 pairs of leaflets. The lower surface is hairy. The flowers are in dense clusters. They are near the ends of branches. The fruit are pods and 7-12 cm long by 1.2-2.2 cm wide. They are broadest towards the end. There are 1-3 seeds. They are about 2 cm long by 1 cm wide.
Leaves: petiole and rachis together 2–14 cm, densely brown-pubescent when young but almost glabrescent; pinnae (1)2–5 pairs; pinna rachis 2–12 cm; leaflets (3)5–10(11) pairs per pinna, (0.5)1–3.4 × (0.3)0.4–1.4(1.9) cm, asymmetrically elliptic to elliptic-oblong, obtuse to emarginate at the apex, strongly asymmetrical at the base; lower surface pubescent and upper surface glabrous or pubescent when young, but both often glabrescent.
Flowers in fairly dense racemes grouped together to form a terminal panicle, the terminal raceme up to 15 cm long, the others shorter, the axes densely brown-pubescent; bracts up to 8 × 4 mm, lanceolate or ovate to elliptic, falling at or slightly before anthesis; pedicels 4–10 mm long.
Pods 7–12 × 1.2–2.2 cm, broadest in the distal third, erect, shortly brown-tomentose especially in the median groove of each valve; seeds 1–3, 1.6–2.2 × 0.9–1.2 cm, oblong, elongated longitudinally.
Petals unequal, the lower and lateral ones 1.2–2.5 × 0.9–1.4 cm, the upper one 0.9–1.0 × 0.7–0.8 cm, all yellow, distal margins usually erose.
Sepals 5–8 mm long, densely brown-pubescent except on scarious margins.
Young stems brown-pubescent but quickly glabrescent, unarmed.
Shrub or tree up to 14 m high with smooth grey bark.
Stamen filaments 7–9 mm long.
Ovary brown-tomentose.