White Ash/Fraxinus americana
Green Ash
Fraxinus pennsylvanica Marsh.
Bark brownish, smooth when young, then breaking into narrow ridges with shallow narrow furrows. Branches drooping to spreading and ascending. Twigs stout, 4 to 6 mm in diameter, olive green. Buds terminal black; smaller lateral buds tightly appressed to the generally straight upper edge of the leaf scar. Leaves opposite, deciduous, odd-pinnately compound with 5 to 7, occasionally 9, leaflets; leaflets narrowly to broadly elliptical, apex acuminate, margin entire to finely serrate, base wedge-shaped, hairy below along the veins. Flowers unisexual (plants dioecious); pistillate inconspicuous in open panicles; staminate in compact conspicuous clusters. Fruit a samara 25 to 50 mm long, seed end conspicuously slender and extending about half the length of the samara, wing decurrent on seed end.
Green Ash/Fraxinus pennsylvanica
Selected References
Bailey, L. H.
1949. Manual of cultivated plants. Rev. ed. 1116 p. Macmillan Co., New York.