Robust, erect herb or small shrub, up to 2 m high; stems silky villous or glabrous, closely leafy. Leaves pinnately trifoliolate. Leaflets elliptic-oblong, oblong or oblanceolate, finely appressed-pubescent, silky villous or glabrescent, prominently veined below. Inflorescence an axillary, terminal, 1-6-flowered raceme, much shorter than leaves. Flowering time Nov.-Mar. Pod compressed, oblong, 2-seeded, densely hirsute, tipped with remains of style.
Leaflets 3, 1.5–8 × 0.6–4.5 cm, elliptic, oblong-elliptic or ovate, obtuse to subacute but apiculate at the apex, rounded to cuneate at the base, rather prominently 3-nerved from the base, the laterals often reaching over half-way up the lamina; petiole 2–4 mm long; rhachis (excluding petiolule) c. 1 mm long; stipules 6 × 2 mm, lanceolate, silky outside.
Erect herb or small shrub 0.4–1.8 m tall; all parts silvery silky appressed hairy particularly at apices of shoots but leaves eventually much less so or ± glabrescent.
Corolla yellow; standard 9(12) × 4.5 mm (including short claw), oblong, glabrous, with sparse hairs at the apex.
Inflorescences axillary, shorter than the leaves, 1–2-flowered; peduncle 6 mm long; pedicels 2 mm long.
Calyx tube 2 mm long; lobes 5–9 × 1–1.5 mm, narrowly triangular-lanceolate.
Seeds blackish-brown, 5 × 4 × 2 mm, compressed oblong-ellipsoid.
Pods 15–20 × 6 mm, oblong, densely silky pilose.