Tree up to 40 m high. Leaves with 15-26 pairs of pinnae; petiole and main rachis up to c. 2 m; pinnae up to 30 cm, 8-27 pairs of leaflets per pinna. Inflorescences up to 90 cm long; pedicels 10-17 mm, articulated near the middle. Flower buds puberulous outside. Petals patulate: limb corrugate, bright yellow, ovate-oblong or obovate, 17.5-22.5 mm long and wide; claw 4-7 mm long. Stamens slightly unequal, shorter than the petals; filaments villous below. Ovary densely hairy; style glabrous.