Trees, unarmed. Leaves large, abruptly bipinnate, stipulate; pinnae many pairs; leaflets numerous, small. Inflorescences corym­bose racemes, terminal. Flowers bisexual, white, orange, or red, large, showy. Bracts caducous, small. Receptacle discoid or turbi­nate. Sepals 5, obovate, subequal, valvate. Petals 5, alternating with sepals, orbicular, margin crispate, clawed. Stamens 10, free, declined. Ovary sessile; ovules numerous; style filiform; stigma truncate. Legume pendulous, compressed, strap-shaped, 2-valved; valves thickly woody, hard. Seeds transverse, oblong.

Two or three species: from E Africa and Madagascar to tropical Asia; one species (introduced) in China.

(Authors: Chen Dezhao (陈德昭 Chen Te-chao), Zhang Dianxiang (张奠湘); Kai Larsen, Supee Saksuwan Larsen)