Large tree, with reddish-brown bark; leaves alternate, perpinnate, leaflets alternate to subopposite, entire, acuminate, oblique, upper surface glabrous and shining, lower pale yellow and pubescent but not velvety; inflorescence terminal, erect panicles, equaling the leaves in length; flowers yellow-red, 4-5-merous; calyx short, 5-toothed; dentate, petals-5, free, oblong, erect, contorted, reflexed in open flowers; stamens 10, crenate, staminal tube cylindric, anther 10, erect, hairy; disk obsolete; ovary shortly stipitate, 3-celled, each with numerous biseriate ovules; style stout nearly equalling the length of stamens; stigma capitate; capsule, erect, woody, ovoid or ellipsoid, septicidally 3-valved, separating from the 3-winged axis; seeds numerous, 60-100 per locule, flat, winged below.