Trees large. Leaves opposite or in whorls of three, 20-35 cm long; leaflets 5-9, 10-15 cm long, 3-6 cm broad, elliptic to obovate, acuminate, entire to slightly crenate or serrulate especially the upper portion, dark green above, paler beneath, slightly pubescent along midrib and prominent nerves, subsessile. Inflorescence decussate on branchlets of the previous year. Calyx and corolla lacking. Anthers sessile, greatly exceeded by pistil. Stigma divided into 2 lobes of c. 0.5 mm length. Samarae lanceolate, 3-4 cm long, 6-8 mm broad, in pendulous decussate panicles, rachis 4-8 cm long.