A deciduous tree reaching 15-25 m tall, with a trunk up to 1 m diameter, with finely fissured, often somewhat corky bark. The leaves are in opposite pairs, 5-12 cm long (including the 3-6 cm petiole), with five blunt, rounded lobes with a smooth margin. The flowers are produced in spring at the same time as the leaves open, yellow-green, in erect clusters 4-6 cm across. The fruit is a samara with two winged seeds each seed 8-10 mm wide, flat, with a 2 cm wing. |