Deciduous, large, unarmed tree with spreading crown, grey to pale-brown bark; branchlets puberulous; leaves 10-30 cm long, pinnae 5-10 pairs, leaflet 15-20 pairs, oblong, glabrous, entire, obtuse; racemes axillary or terminal, simple or branched; flowers crimson red; calyx lobes 5, subequal, coriaceous, oblong-oblanceolate, valvate; petals-5, free, scarlet with yellow, obovate, suborbicular, obtuse, with long claw, margins fimbriate; stamens 10, free, much exserted, nearly equal to or shorter than petals, filaments subulate, anther linear, versatile, empty anthers villous at base; ovary densely pubescent, sub-sessile, style filiform, stigma minute, capitate; pods broadly linear, woody, reddish brown, flat, continuous within, dehiscent; seeds 8 to many, oblong, glabrous, smooth, white or creamy white.