White Ash
Scientific Name:Fraxinus americana
"

NOTES: Stalked leaflets with whitened undersides and U-shaped leaf scars notched (bud notch) at the top. Green Ash leaflets, in contrast, have short stalks, lack whitened undersides, and have leaf scars flattened at the top. MADBUCK.   
MADBUCK: Maple, Ash, Dogwood, and Buckeye) acronym for Ohio's four native trees with opposite leaves/branching.

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White Ash
Genus species: Fraxinus americana
Common Name: White Ash
Family Name: Oleaceae  
Deciduous or semi-evergreen shrubs or trees; leaves opposite, simple or compound; flowers bisexual or unisexual, regular, in various inflorescences; fruit a drupe, capsule, or samara.
Seed Type: Angiosperm
Origin:  
Native: native to North America.
Non-native: not native to North America.
Introduced Native: native to North
America, but not Rowe Woods.
* Definitions based on the USDA
terminology
Native
Category:Tree
CNC Habitat: Krippendorf Arboretum
Nature Playscape
Identified by:A. Swanson
Months in Bloom:  
The highlighted month(s) in this chart indicate when the plant has been observed blooming.
Jan Feb Mar Apr May
Jul Aug Sep Oct Nov Dec