black ash Oleaceae Fraxinus
|Leaf: Opposite, pinnately compound, 7 to 11 sessile, serrated leaflets, whole leaf 10 to 14 inches long, dark green above, lighter below with tufts of brown hair.
Flower: Species is monoecious or with separate male and female trees; female flowers in loose panicles; males in tighter dense clusters, both appear before the leaves in early spring.
Fruit: Samara with a wide wing and an indistinct seed cavity, 1 to 1 1/2 inches long, borne in hanging clusters.
Twig: Stout, light brown to gray, opposite buds are nearly black, first lateral buds appear some distances below terminal, nearly circular leaf scar.
Bark: At first smooth, but becomes scaly to corky, gray-brown.
Form: Small to medium sized tree reaching up to 40 to 50 feet tall, usually with a slender crown.
Looks like: green ash
- white ash
- blue ash
| Additional Range Information:
Fraxinus nigra is native to North America.
Range may be expanded by planting.
See states reporting black ash.
| External Links:
Silvics of North America
USDA Plants Database
|© Copyright 2016, Virginia Tech|
Dept. of Forest Resources
and Environmental Conservation,
all rights reserved.
Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
and John Peterson