Rhus copallina - Winged Sumac
Winged sumac is a large, deciduous shrub or small tree, 20-35 ft. tall, with short, crooked trunks and open branching. Glossy, dark-green, pinnately compound leaves turn reddish-purple in the fall. Yellowish-green flowers are succeeded by drooping, pubescent, pyramidal fruit clusters which turn dull red and persist through winter. It is easily distinguishable from other sumacs by the winged leaf axis and watery sap. Often forms thickets.