The American Aspen, also known as Populus tremuloides, is a deciduous tree species native to North America. It has a distinctive papery white bark that appears to shimmer in the wind. The tree's leaves are small and round with a toothed edge, and they turn golden-yellow in the fall. There are several synonyms for the American Aspen, including the Quaking Aspen, Trembling Aspen, and White Poplar. These names refer to the tree's characteristic quivering leaves, which move back and forth in even the slightest breeze. The Aspen is a beloved tree species in North America, valued for its beauty and cultural significance.