Deciduous  tree, up to 15 m high.  leaves dark green, glabrous, with stout petiole, bipinnate; pinnae 10-20 pairs, each with 20-40 pairs of oblong-obtuse leaflets. Flowers bright scarlet mixed with yellow, in lax terminal or axillary racemes, about 30 cm long. Petals 5, sepals 5, stamens 10 with red filaments. Pod 50-60 cm long, indehiscent, dark brown ripe. Seeds about 2 cm long, oblong, greyish, hard.
The tree is native of Madagascar