Glabrous monoecious tree; sap dark red. Twigs rounded, smooth. Lvs opposite, elliptic to obovate, cuneate at base, obtuse and broadly mucronate, entire, 5-14-(20) cm long; petioles much < blade; stipules soon deciduous. Racemes usually unisexual; bracts soon deciduous; fls white; stamens numerous. Fr. rough, ridged on keels and between cells, shortly beaked, c. 15-20 mm diam. Seeds smooth, ovoid-oblong, c. 10 mm long.