Oleaceae
| Name | Height | Leaf | Fruit | Region |
| White Ash Fraximus americana |
60' - 70', can be 100' | 7 oval leaflets, gradually tapered to each end, 8" - 15" | winged, seed cylindrical | Deciduous, Great Lakes - St. Lawrence, Acadian |
| Red Ash Fraximus pensylvanica |
30' - 40', can be 85' | 7 oval leaflets, gradually tapered to each end, 10" - 12" | winged, seed cylindrical | southern Boreal in Saskatchewan and Manitoba, Deciduous, Great lakes - St. Lawrence, Acadia (except Nova Scotia) |
| Blue Ash Fraximus quandrangulata |
up to 70' | 11 oval leaflets, tapered to long tip, 8" - 12" | wing broad, twisted | part of Deciduous |
| Black Ash Fraximus nigra |
40' - 60', can be 90' | 7-11 oval leaflets, tapered to sharp tip, 10" - 16" | broad twisted wing, flat seed | southeastern Boreal, Deciduous, Great Lakes - St. Lawrence, Acadian |
