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Natural History Lessons
Trees and Shrubs
Cottonwoods: Three Species
Near Lower Portage Camp, June 30
Photo by Kris Townsend, © 2015.
How did Lewis tell them apart?
Three Variations on a Populus Theme
Black Cottonwood, Populus tricocarpa
Narrowleaf, Plains, or Black?
Cottonwoods on the Missouri River
Cottonwoods at Travelers' Rest
Cottonwoods on Lolo Creek