The plains cottonwood, (Populus deltoides), dominates the stream banks along the Bighorn River below the mouth of Bighorn Canyon.
"Cotton" Floating On The Breeze
The leaves are triangular to heart shaped with coarsely toothed margins. Their leaf stems are flattened lengthwise so the leaves flutter in the breeze like those of the related quaking aspen. The leaves turn yellow in the fall providing most of the autumn color in the valley.
Did You Know?
One of the most famous fossil discoveries is within view of Bighorn Canyon. Natural Trap Cave is well known within the scientific community due to the presence of over 40,000 fossil bones, among them the remains of the Short-faced bear, American lion, American Cheetah, American Camel, and Mammoth. More...