Oregon ash

  • Latin name: Fraxinus latifolia Benth.
  • French name: Frêne de l'Oregon
  • Taxonomic Serial Number: 32944
Description

Leaves

  • Leaf - Oregon ash

Form

  • Pinnately compound
  • 5–9 (usually 7) leaflets
  • Leaflets with tapered base and broad pointed tip
  • Usually densely hairy (tomentose) below

Length

  • Leaflets 4–10 cm

Margin

  • Usually smooth

Buds

  • Lateral bud and leaf scar - Oregon ash

Form

  • Terminal bud present, broad, pointed
  • 4 pairs of hairy scales
  • Leaf scars large, crescent-shaped

Length

  • 3–8 mm

Twigs

  • Winter twig - Oregon ash

Form

  • Densely hairy in spring
  • Stout

Colour

  • Becoming reddish-brown to grey

Flowers

Form

  • Panicles

Structure

  • Dioecious

Floral timing

  • With the leaves

Fruits

  • Fruit - Oregon ash

Form

  • Seedcase flattened
  • Wings uniformly broad

Structure

  • Samara

Bark

Form

  • Mature bark deeply fissured with broad, flat ridges

Colour

  • Mature bark reddish-brown to grey

Size

Height

  • To 21 m

Diameter

  • To 1 m

Range

Pacific coast region of North America
Found in southern British Columbia
Natural occurrence in Canada uncertain
May be naturalized

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