Fraxinus pennsylvanica (Green ash): Leaves
The pinnately-compound leaves are opposite (rarely sub-opposite) with narrowly winged leafstalks. Each leaf has 5 to 9 (usually 7) short-stalked, elliptic to lance-shaped leaflets. The margins are conspicuously toothed above the middle, and the leaf surface is dark, glossy green above and light green and either glaucous or finely hairy underneath. In the fall, the leaflets turn yellowish-brown and tend to fall one at a time.