A decidious tree growing to 30m by 15m. Leaves opposite, simple with 5 deeply palmate sinuses, lobe margins coarsely serrate, 2 1/2 to 5 inches long; light green above, pale, silvery white below. Flowers are in small panicles, produced before the leaves in early spring, with the seeds maturing in early summer. The seeds are winged, in pairs, small (5-10 mm diameter), the wing about 3-5 cm long.