Identify a conifer tree

Group 11

Poplars / aspens / cottonwoods

Leaves alternate, simple; edges toothed

Stalk circular or flattened on the lower surface near the base of the blade, 7-10 cm long; leaves rounded, warty glands may be present at the base

  • Balsam poplar

Stalk circular or flattened on the lower surface near the base of the blade, 3-4 cm long; leaves ovate, lower surface whitish

  • Black cottonwood

Stalk laterally flattened near the base of the blade; leaves slightly triangular, similar colour on both surfaces, 20-25 rounded teeth per side; resinous buds

  • Eastern cottonwood

Stalk laterally flattened near the base of the blade; leaves broadly ovate to slightly triangular, lower surface paler; resinous buds

  • Jack’s hybrid poplar

Stalk laterally flattened near the base of the blade; leaves narrow, ovate to slightly lance-shaped, tip long-pointed, lower surface paler; buds resinous

  • Lanceleaf cottonwood

Stalk laterally flattened near the base of the blade, shorter than the blade; leaves oval with a few coarse teeth

  • Largetooth aspen

Stalk circular or flattened on the lower surface near the base of the blade; leaves very narrow and lance-shaped

  • Narrowleaf cottonwood

Stalk laterally flattened near the base of the blade; leaves slightly triangular, similar colour on both surfaces, 5-15 rounded teeth per side; buds covered with fine hairs

  • Plains cottonwood

Stalk laterally flattened near the base of the blade, longer than the blade; leaves round

  • Trembling aspen
  • Trembling aspen
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