Many-stemmed erect shrub or small tree up to 9 m tall with glabrous to densely pubescent branchlets. Leaves alternate, simple and entire; stipules quickly caducous; petiole 1–4 cm long, prominently thickened at base and at top; blade ovate, elliptical, obovate or lanceolate, 5–21 cm × 3–9 cm, base rounded to cuneate, apex acuminate, slightly leathery, almost glabrous, pinnately veined. Flowers in axillary fascicles, 1–5-flowered, bisexual, papilionaceous; pedicel slender, 3–17 mm long; calyx spathaceous, 8–10 mm long, glabrous but with a tuft of brown hairs at apex; corolla with standard suborbicular, 1–2 cm in diameter, white with a yellow centre, wings and keel white with a pocket near the base; stamens 10, filaments unequal, free, up to 7 mm long; ovary superior, sessile, glabrous, sometimes with a row of silvery hairs along the dorsal margin, 1-celled, style curved, filiform, stigma small. Fruit a compressed pod 8–16.5 cm × 1–1.5 cm, pointed at both ends, 1–4-seeded. Seeds almost circular in outline, 1–1.5 cm in diameter, brown. |