Inflorescences (7)10–18 cm long including the 3–5(8.5) cm long peduncle; cymule-stalks c.1 mm long, 1–2-flowered; bracts 1–3 mm long, linear-triangular, pubescent; pedicels c.2 mm long, pubescent; bracteoles c.1 mm long, ± triangular, paired.
Corolla mauve with white keel, glabrous; standard 8.5 × 8 mm, ovate-oblong, emarginate at apex, ± truncate at the base, unappendaged, with claw 2.5 mm long; wing blades 8 × 2 mm, oblong, with claw 3 mm long; keel petals similar.
Ovary 6 mm long with stipe 1 mm long, 2–3-ovuled, pubescent; style curved, 3 mm long, glabrous except at base; stigma globose.
Calyx reddish, pubescent; tube c.3 mm long; teeth acuminate, c.0.5 mm long, the upper pair triangular, shorter than the lower.
Stamen sheath 7–8 mm long with free parts of filaments 2–3 mm long; upper stamen free at the base; anthers 0.6–1 mm long.
Immature pod flat, 6–7 × 1.5 cm, oblanceolate, 2–3-seeded, sparsely puberulous, later glabrous.
Stems ascending or ± prostrate, pubescent, green or drying straw-coloured.
Seeds dark brown, 9 × 7 × 4 mm, rounded-oblong; hilum 2.5 mm long.
Subshrub 0.16–1.2 m tall or long, from a woody rootstock.
Disk absent.