Swamp white oak

Silhouette - swamp white oak
  • Latin name: Quercus bicolor Willd.
  • French name: Chêne bicolore
  • Taxonomic Serial Number: 19300
Description

Leaves

  • Typical leaf form - swamp white oak

Form

  • Tapering to a wedge-shaped base
  • Principal veins 4–6 per side
  • Each vein ends in a rounded shallow lobe or tooth
  • Lower surface has abundant hairs

Length

  • 12–17 cm

Width

  • Widest above the middle

Colour

  • Upper surface shiny dark green
  • Lower surface pale greyish-green
  • Hairs white
  • Strong contrast in colour between upper and lower surfaces

Margin

  • Toothed

Buds

  • Lateral bud and leaf scar - swamp white oak

Form

  • Terminal bud rounded
  • Blunt, usually hairless
  • Lateral buds diverging from the twig

Length

  • Terminal bud 2–4 mm

Colour

  • Reddish-brown

Twigs

  • Winter twig - swamp white oak

Form

  • Stout, hairless

Colour

  • Reddish-brown

Flowers

Form

  • Pollen flowers small
  • In many-flowered drooping catkins
  • Seed flowers small
  • Solitary or in few-flowered clusters (spikes)

Structure

  • Monoecious

Floral timing

  • With the leaves

Fruits

  • Acorn on long stalk - swamp white oak

Form

  • Acorns solitary or paired
  • Cup covered by swollen scales with recurved tips
  • Enclosing one-third to one-half of the nut
  • Fringed margin of cup usually evident

Length

  • Acorns 20–30 mm
  • Stalks 2–10 cm

Structure

  • 1-seeded nut

Bark

Form

  • Scaly
  • With age fissured with flat ridges

Colour

  • Light greyish-brown

Size

Height

  • To 22 m

Diameter

  • To 90 cm

Maximum age

  • 200 years

Tree form

  • Silhouette - swamp white oak

Forest-grown

Trunk

  • Short, forked

Crown

  • Broad, open, rounded
  • Relatively slender branches for an oak
  • Upper branches ascending
  • Lower branches usually drooping
  • Larger branches and trunk with many small, crooked,
  • hanging branchlets
  • Making lower part of tree appear untidy

Habitat

Site

  • Moist bottomlands
  • Edges of swamps

Light tolerance

  • Moderately shade-tolerant

Range

Uncommon in Canada
Southern Ontario and southern Quebec

Photos
  • Swamp white oak
  • Swamp white oak
  • Swamp white oak
Distribution map
Distribution map - swamp white oak
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