Erect shrub 1–4.5(–6) m. tall. Stems covered with glandular bristly tubercular-based hairs. Leaves 20–42-foliolate; leaflets oblong or oblong-lanceolate, 2–10(–12.5) mm. long, 0.5–3.5(–4) mm. wide, slightly falcate and acute at the apex, obliquely or minutely emarginate at the base, glabrous or pubescent and with some tubercular-based hairs on the submarginal main nerve beneath, margins denticulate-ciliate; petiole and rhachis together 2–7.6 cm. long; petiolules minute; stipules ovate-lanceolate, 3–7.5 mm. long, 1.2–3.5 mm. wide, acute, margined or covered with tubercular-based hairs, scarious, veined, persistent. Inflorescences axillary, dense, 1–few-flowered, not strobilate; rhachis 2–6 cm. long, mostly with bristly yellow hairs; peduncle 3–5 mm. long or very short or obsolete; pedicels 4–6 mm. long; sterile bracts often several and conspicuous; bracts ovate, 3.5–8 mm. long, 1.3–3 mm. wide, acute or acuminate, glabrescent or covered with bulbous-based hairs outside; bracteoles ovate-lanceolate, 3–7 mm. long, 1.2–2 mm. wide, acute or acuminate, pubescent. Calyx pubescent and bristly-hairy, 1–2.2 cm. long, the upper lip emarginate or bifid for 0.5–3 mm., the lower lip deeply divided for half or just over half its length into 3 diverging lanceolate-acuminate lobes, the central one usually longest and narrowest. Standard orange-yellow, often veined with reddish-purple, obovate or rounded, 0.95–1.9 cm. long, 0.45–1 cm. wide, emarginate, glabrous; wings orange-yellow, hairy at apex; keel greenish-yellow, often veined with pale red, hairy at apex. Ovary 6–9-ovulate, pubescent. Pods 4–9-jointed; articles 3–4 mm. long and 2–3.2 mm. wide, pubescent. Seeds ochraceous or reddish-brown, depressed half-globose-reniform, longest dimension 2–2.8 mm., shorter dimension 1.8–2.2 mm., 1–1.3 mm. thick; hilum minute, eccentric.
