Fraxinus latifolia

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Fraxinus latifolia
Fraxinus latifolia JPG1A.jpg
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Lamiales
Family: Oleaceae
Genus: Fraxinus
Species: F. latifolia
Binomial name
Fraxinus latifolia
Fraxinus latifolia range map 5.png
Native range of Fraxinus latifolia

Fraxinus latifolia (Oregon ash[1]) is a member of the ash genus Fraxinus, native to western North America. The Oregon ash is dioecious.


Fraxinus latifolia is found: on the west side of the Cascade Range from southwestern British Columbia south through western Washington, western Oregon, and northwestern California; and in central California in the Sierra Nevada.[1][2][3]


Fraxinus latifolia can grow to 25 metres (82 ft) in height, with a trunk diameter of 30–80 cm. The compound leaves are pinnate, 12–33 cm long, with 5-9 leaflets, each leaflet ovate, 6–12 cm long and 3–4 cm broad, and often show signs of disease and brown rot, even on otherwise healthy plants. The fruit is a samara, 3–5 cm long including the wing.[1][2]

The Oregon ash prefers damp, loose soils, and grows from sea level to 900 metres (3,000 ft) in elevation, up to 1,700 metres (5,600 ft) in the south of the range in California. In central Southern California, it intergrades with Fraxinus velutina (Velvet ash) of southern California east into Arizona.[1][2]


  1. ^ a b c d Plants of British Columbia: Fraxinus latifolia
  2. ^ a b c Jepson Flora Project: Fraxinus latifolia
  3. ^ USDA Forest Service Silvics Manual: Fraxinus latifolia

External links[edit]

Leaves of the Oregon ash