Quaking Aspen
Family: Salicaceae (View Members of Salicaceae)

Genus and species: Populus tremuloides

Leaves: The leaves are about 1-3"(2.5-5cm) long and wide. (View Measured Leaf) They are almost round, but have a short pointed tip. They have a rounded base and are finely saw-toothed. They have flattened stalks, like those of an Eastern Cottonwood. They are shiny green on top, paler and hairless beneath.(View Leaves)

Bark: The bark is grayish and smooth. It may become brown and furrowed on more mature trees. (View Bark) The twigs are brown and hairless.

Fruit: The fruit is 4" (10cm) long and is made up of 1/4" (6mm) narrowly conical capsules that are light green (very similar to Bigtooth Aspen fruit). They may split into cottony seeds, like those of Eastern Cottonwood and Bigtooth Aspen. However, fruit is rare on the Quaking Aspen because they most commonly propogate and spread by root sprouts. This is the reason that they are usually seen in pure stands.

Tree: This tree grows to be 40-70' (12-21m) tall, and has a narrow, rounded crown, as pictured to the left.

Range and Habitat: These trees are widely spread in North America and are commonly found from Alaska east to Newfoundland, south to Virginia. They are usually found in pure stands and in rocky or sandy soils.

Quaking Aspen Tree (Brandeis University, Waltham, MA, 10/10/02)
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