Admirers frequently note the striking white bark of quaking aspen. This bark lives and carries out photosynthesis, attributes that make it unique among North American trees and likely contribute ...

What caught my eye was the bark-it was clearly green-almost luminous against the swirling snow and gray mountains. I’m pretty sure this was a quaking aspen (Populus tremuloides) or as many of us ...

it looks like a forest made up of individual trees with characteristic white bark and small leaves that move even in the ...