Stock photography, photos: Cottonwood and Winter Sunset Stock photos of Eastern Cottonwood tree (Populus deltoides) on the prairie at sunset in early winter. Sheyenne National Grassland, North Dakota. Photograph: © Matthew Thalman Click for a larger image and more information Keywords associated with this stock photo: USA, United States of America, America, United States, US, sheyenne national grassland, sheyenne ng, North Dakota, ND, prairie, grassland, tree, trees, wood, sunset, sundown, Eastern Cottonwood, Populus deltoides, north america, blue, cold, plants, scenics, snow, weather, sun, sunlight, sky, cottonwood, Willow, Salicaceae, deciduous, plant, national grassland, winter, silhouette