1 Populus tremuloides - Quaking Aspen Acer negundo - Box Elder Pinus edulis - Piñon Pine Sorbus scopulina - Mountain Ash Pinus ponderosa - Ponderosa Pine Juniperus scopulorum - Rocky Mountain Juniper Abies concolor - White Fir Quercus gambelii - Scrub Oak Castilleja haydenii - Paintbrush   1