Fraxinus pennsylvanica

Green ash is in the olive or Oleaceae family and is native to eastern and central North America, from Nova Scotia west to southeastern Alberta and eastern Colorado, south to northern Florida, and southwest to eastern Texas. It is the most widely distributed of all the American ashes; it has spread and become naturalized in much of the western United States and also in central Europe from Spain to Russia.

• Leaves are 15–30 cm long, pinnately compound with seven to nine (occasionally five or eleven) leaflets, these 5–15 cm long and 1.2–9 cm broad, with serrated margins and short but distinct, downy leaf stocks (petioles) only a few millimeters long.
• Species is dioecious, with light green to purplish flowers, no petals, females in loose panicles and males in tighter clusters, appearing after leaves unfold.
• Fruit is a slender samara up to 7.5 cm long, with a single seed 1.5–3 cm long and a wing, in clusters.
• Leaf scars are semicircular to flat across the top, with lateral buds sitting on top of leaf scar (not down in a in notch as with white ash).