A small, rather delicate-looking tree, with opposite, ascending to erect branches, rounded twigs, and a narrow crown. The leaves are 2-10 cm broad, three-lobed (rarely five-lobed), variable in the depth of lobing, occasionally so deeply lobed as to be divided into three leaflets; the lobes have an acute apex and a coarsely serrated margin. Flowers are greenish-yellow, appearing early in the spring in small clusters. Male and female flowers are on separate trees. Seeds occur in pairs, attached by their seed coat. On the unattached end of each seed are broad membrane-like wings. |