Tree or shrub, up to 10 m tall; branchlets with conspicuous lenticels. Pseudostipules subcircular to obcordate, 0.5–1 cm in diam. Leaves up to 25 cm long; petiole 3–6 cm long; leaflets 3–7, sessile or with petiolule up to 5 mm long; blade of leaflets elliptic-obovate to ovate-subcircular, slightly asymmetric at the base, cuspidate to retuse at the apex, with entire to serrate margin, apical leaflet up to 10 x 8 cm, the lateral ones decreasing in size towards the base of the leaves, 2.5–6 x 2–3 cm, with 5–6 pairs of lateral nerves, impressed above and prominent below, lower surface with domatiae and sometimes scattered circular black glands. Panicles 5–20 cm long; pedicels up to 1.5(–2) cm long, with 2 bracts below the middle. Calyx 10–15 mm long, splitting at one side. Corolla yellow-greenish flecked with maroon; tube 20–30 mm long; lobes subcircular, 10–15 mm in diam. Stamen-filaments 7–14 mm long; anther-thecae c. 1.5 mm long. Disk 1–3 mm in diam. Style 10–25 mm long. Capsule 20–60 x 0.9–1.5 cm, straight or slightly curved. Seeds 4–6 x 20–40 mm including the wing.