White Ash (American Ash)
Fraxinus americana · Oleaceae (Olive family)
AI-generated identification · may be incorrect
Leaf Morphology
Leaf Type
Pinnately compound, deciduous, typically featuring 5 to 9 leaflets per leaf
Shape
Elliptical to ovate leaflets with tapered, acuminate tips
Margin
Finely serrate to nearly entire
Arrangement
Opposite arrangement on the stem, which is a key diagnostic feature for ashes
Venation
Pinnate venation with a prominent central midrib and looping lateral veins on each leaflet
Key Features
Opposite leaf arrangement combined with pinnately compound leaves containing 5-9 stalked leaflets, pale undersides, and deeply furrowed diamond-patterned bark on mature trees
Description
Fraxinus americana, commonly known as the White Ash, is a majestic deciduous tree known for its strong, straight wood and vibrant fall colors. The leaves are opposite and pinnately compound, dividing into distinct leaflets that turn striking shades of purple, yellow, and red in autumn. The bark is deeply furrowed into a diamond-shaped pattern on mature trees.
Habitat
Found in rich, moist, well-draining deciduous forests, along streams, and in upland areas with slightly acidic to neutral soils
Native Range
Native to eastern and central North America, stretching from Nova Scotia west to Minnesota, and south to northern Florida and eastern Texas