American Quaking Aspen -

Aspen bark is unique among North American trees because it is .

: Because they share DNA, every tree in a clone will leaf out in the spring and turn golden-yellow in the fall at the exact same time. Living Bark and Sunscreen

While it looks like a forest of individual trees, an aspen grove is often a single . american quaking aspen

: Small, rounded leaves with flexible stems help branches survive heavy mountain snowfalls.

The tree's hallmark is the way its leaves tremble in even the slightest breeze. This occurs because the leaf stalks, or , are long and flattened perpendicular to the leaf blade, causing them to twist and flutter. This unique adaptation: Aspen bark is unique among North American trees

The ( Populus tremuloides ) is a master of endurance and collective living, best known for its "quaking" leaves and status as one of Earth's largest living organisms. The Shimmering "Quake"

: The constant movement helps dissipate heat during summer. One Organism, Thousands of Trunks : Small, rounded leaves with flexible stems help

: The "brain" of the organism is a massive underground root network that can live for thousands of years.