This enables the tree to absorb a small amount of ... In North America, the closely related quaking aspen (Populus tremuloides) is found in much of Canada and the northern USA.

FLAGSTAFF — Beneath the scenic yellow and red leaves of soaring aspen trees in the Kachina Wilderness, forest ecologist Mike Stoddard is looking down. His concern isn’t the brilliant fall ...

After the summer months when tourism is tapering off in Flagstaff, the changing colors of the aspen trees bring people up the mountain to peep the rainbow of leaves on the San Francisco Peaks and ...

these two species occupy the broadest range of any tree species in the world. Why is that so? Quaking aspen can be found from Alaska to Mexico and from Vancouver to Maine (Jones et al. 1985 ...