Trees evergreen, 12 to 15 m tall. Bark smooth to wrinkled. Trunk irregularly buttressed at base. Twigs red-brown or purplish, slender. Leaves ovate-lanceolate, acuminate, 5-18 cm long, 2-8 cm wide, glabrescent, reddish when young, later dark green above, paler to glaucous beneath; nerves pinnate in 6-8 pairs; base rounded to subacute; petioles slender, 2-10 cm long. Inflorescence corymobose, pubescent on leafy terminal and lateral shoots, 5-15 cm long. Pedicels pubescent. Flowers 5-merous, 7-9 mm across, greenish-white. Sepals linear, 1-2 mm wide, acute, pubescent. Petals narrowly lanceolate, 1-2 mm wide. Stamens 8, inserted on disc. Ovary pubescent, styles free nearly to the base. Samaras glabrous, 2-3 cm long; wings veined, divergent, constricted at base; nutlets gibbous, locules white-pubescent inside.