The Flora of Mount Rainier -- a Photographic Journey, by Susan McDougall
Black Cottonwood - Populus trichocarpa
A common tree, the tallest non-conifer in the Park. Found in the major river valleys up to about 4500 feet. Photographed (left and right) along the road in Stevens Canyon, on September 9, 2016, and (center) at the White River Campground on October 11, 2012.