Aspen
Populus tremuloides

Family: Willow (Salicaceae)
AKA: Quaking Aspen
Photo taken on: June 03, 2007
Location: Snodgrass Mountain, GV, CO
Life Zones: Foothills to subalpine
Habitat: Moist slopes

Grows to 60ft with bright white to grayish chalky bark. Aspen grow in dense stands by putting out suckers.

Long stalks on the leaves make them flutter or quake in the slightest breeze.

The 'eyes' on the trunks are where limbs have fallen away.

In September most leaves turn golden but some stands are orange or red.

Flora of North America reference.