Changes

*Medium-sized to fairly large tree up to 30 m tall; bole straight, up to 100 cm in diameter; bark scaly, reddish brown; young branches sparsely pubescent. *Leaves alternate, bipinnately compound with (3–)4–6 pairs of pinnae, these alternate to opposite; stipules triangular, c. 2 mm long, caducous; petiole (2.5–)4–9 cm long, rachis (4–)6–22 cm long, grooved and slightly pubescent above; leaflets 11–15 per pinna, alternate, shortly stalked, oblong to broadly elliptical, up to 3 cm × 1.5 cm, rounded at base and apex, almost glabrous. *Inflorescence an axillary raceme (5–)10–20 cm long, many-flowered. *Flowers bisexual, regular, 5-merous, yellow; pedicel 2–4 mm long, with joint near base; calyx shortly obconical, 1.5–2 mm long, glabrous, with short lobes; petals free, elliptical, 3–4 mm long, reflexed; stamens 10, free, anthers with a stalked gland at apex; ovary superior, shortly stalked, narrowly oblong, glabrous, style c. 3.5 mm long. *Fruit a narrowly oblong to linear and sickle-shaped pod (10–)20–30 cm × 1.5 cm, flattened, stalked, with thickened margins, glabrous, yellowish, silky, dehiscent with 2 valves, up to 15-seeded. *Seeds flattened ellipsoid, 8–11 mm × 6–8 mm, black in the lower part and red-orange in the upper part.