Deciduous tree 9–25(–45) m. high; bark pale grey, scaly, with crimson slash; crown obconical, flat-topped. Leaves: rhachis with petiole 17–50 cm. long; leaflets 4–10 pairs, ovate-elliptic to ovate-oblong, 3.5–18 cm. long, 2.5–9.5 cm. wide, asymmetric at base, ± acuminate at apex, pellucid-dotted all over, glabrous, or pubescent and becoming glabrous; petiolules 0.5–1.5 cm. long. Panicles 6–25 × 5–37 cm. Flowers white, fragrant. Sepals elliptic, 1.2–1.7 cm. long, 0.8–1.1(–1.5 when spread out) cm. wide. Petals: 1 oblong-elliptic, 0.8–1.2 cm. long, 0.3–0.45 cm. wide; 4 very small and inconspicuous. Stamen-filaments exserted, 3–3.5 cm. long, free, glabrous. Pods 6–9.5 cm. long, 3–4.5 cm. wide. Seeds obovoid or ellipsoid, 2–2.6 cm. long, 1.3–1.9 cm. wide. Fig. 24, p. 131.