Genus: Fraxinus
Family: Oleaceae

In all there are about 65 species in this genus, all members of the Northern Hemisphere hardwood forests. They have compound leaves, for the most part, and slender, one-winged seeds (some members of this genus have separate male and female plants).

Fraxinus americana
White Ash

Native of eastern North America, this fast-growing ash reaches 120 feet. The compound leaves are long, oval and pale green. Fall colors range from red-bronze to purple. This is the most abundantly planted ash, but it is not common in Portland.

Maps: 1, 16


Fraxinus angustifolia
Raywood Ash

The Raywood Ash is a cultivar that originated in the Raywood Gardens near Adelaide, Australia. The leaves are dark green and serrated, and they turn to a plum purple color in fall. Raywoods are often seen as street trees, and their fall color can certainly enhance a street.

Maps: 28

Fraxinus excelsior
European Ash

This ash is native throughout Europe and into western Asia. It is deciduous and usually attains a height of about 50 feet. The compound leaves are green in the summer and drop off green or yellow in fall.

'Diversifolia' or 'One-Leaved Ash' - This deciduous tree is a cultivar of the European Ash. Unlike most ashes, it has a single rather than compound leaf.

Maps: 1, 22


Fraxinus latifolia
Oregon Ash

An Oregon native, this tree likes moist land. It grows to a height of 80 feet. This is one of the few native western trees with compound leaves. Male and female flowers are borne on separate trees. The wood makes good baseball bats and ax handles.

Maps: 16, 24, 27