Click on the images help you identify a black ash.
Form
Medium-sized tree, 35 to 75 feet tall, with a trunk diameter of 12 to 24 inches. The crown is rounded and composed of a few short branches. The trunk is typically straight and columnar, but is often leaning or crooked.
Bark
Grayish on older portions of the tree, furrowed and somewhat separated into thin scales that are easily rubbed off. New growth is light green.
Leaf
Leaves are opposite on the stem, 9 to 16 inches long, and pinnately compound, with seven to 11 yellowish-green leaflets. Each leaflet is 4 to 5 1/2 inches long, oblong in shape, and unstalked except for the terminal leaflet. The terminal bud is large and pointed. Leaves are smooth on both surfaces and turn yellow to brown in autumn.
Fruit (seed)
Fruit is a flat, winged, one-seeded samara, 1 to 1 1/2 inches long. The wide, thin wing, rounded or slightly notched at the end, nearly surrounds the seed. Seeds usually germinate and begin growth in the second year.
Range
Fairly plentiful throughout the state except in the western half. Most abundant in cold, moist locations and along low stream banks. Shade-intolerant and slow-growing.