Evergreen, profusely branched tree; bark rugose, grayish black; leaves paripinnate, petiolules short, leaflets opposite, 4-5 pairs, ovate or lanceolate, base oblique, apex acuminate, margin crenate or entire, glabrous on both surfaces, lateral veins 6-10 pairs, prominent on both surfaces; flowers pentamerous, bisexual, greenish-yellow in axillary panicles; calyx tube shallowly 5 lobed, sepals 5, very small, suborbicular or ovate, imbricate; petals 5, ovate-oblong, contorted; stamens-10, all fertile, staminal tube urceolate or slightly constricted at mouth with 10 appendages, yellow; disk annular; ovary 2-5 celled, many ovuled, style short, attenuate, stigma peltate or umbrella like; capsule oblong, woody; seeds winged, dark brown.