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?
The sequence of events that comprise the geological history of Bighorn Canyon is exceedingly similar to that of the Grand Canyon. More...