Largetooth aspen

Silhouette - largetooth aspen
  • Latin name: Populus grandidentata Michx.
  • French name: Peuplier à grandes dents
  • Synonym(s): Bigtooth aspen
  • Taxonomic Serial Number: 22463
Description

Leaves

  • Leaf - largetooth aspen

Form

  • Varies from ovate with a short, sharp tip to broadly oval with a blunt tip
  • Neoformed leaves on vigorous shoots heart-shaped, large
  • Dense woolly hairs on lower surface

Length

  • 5–10 cm

Colour

  • Upper surface dark green
  • Lower surface paler with white hairs when unfolding in spring

Margin

  • 7–15 large uneven teeth per side
  • Teeth smaller, more numerous on neoformed leaves

Petiole

  • Flattened, shorter than the blade
  • Less flattened, with dense white woolly hairs on neoformed leaves

Timing

  • 7–10 days later than trembling aspen

Buds

  • Lateral bud and leaf scar - largetooth aspen

Form

  • Terminal bud ovoid, blunt
  • Finely hairy, not gummy or fragrant
  • Lateral leaf buds similar but more slender
  • Flower buds stout

Length

  • 7–8 mm

Colour

  • Dull brown

Twigs

  • Winter twig - largetooth aspen

Form

  • Moderately coarse
  • Downy when the leaves are unfolding
  • Some hairiness often remains
  • Round in cross-section

Colour

  • Dull brownish
  • Lenticels orange

Flowers

Structure

  • Dioecious

Fruits

  • Fruit capsule; closed (left), open (right) - largetooth aspen
  • Fruit capsule scales; outer surface (left), inner surface (right) - largetooth aspen

Form

  • Capsules narrowly conical, downy, closely spaced on flexible stalks
  • Splitting into 2 parts when mature

Length

  • Mature seed catkins 10–12 cm
  • Capsules 6–7 mm

Timing

  • Seeds ripen 4–6 weeks after flowering

Bark

Form

  • Smooth, with age becoming furrowed
  • Diamond-shaped marks about 1 cm across frequently occur

Colour

  • Pale green to yellowish-grey, usually with an orange cast, becoming dark grey
  • Darker than trembling aspen

Size

Height

  • To 20 m

Diameter

  • To 30 cm

Maximum age

  • 60 years

Tree form

  • Silhouette - largetooth aspen

Forest-grown

Trunk

  • Long, cylindrical, smooth, with little taper
  • Branch-free in the lower part

Crown

  • Short, rounded

Root system

  • Shallow, very wide-spreading

Habitat

Site

  • Moist, fertile soils

Associated species

  • Small pure stands, usually a single clone formed by root sprouts
  • More often mixed with trembling aspen, white birch, eastern white pine, balsam fir, white spruce, willows and alders
Insects and diseases

Insects and diseases that are found most frequently and/or that cause the most damage in our Canadian forests.

Photos
  • Largetooth aspen
  • Largetooth aspen
  • Largetooth aspen
  • Largetooth aspen
  • Largetooth aspen
Distribution map
Distribution map - largetooth aspen
Date modified: