The concolor fir is a white fir native to the lower elevations of the mountains of western North America. It is a medium-to-large coniferous evergreen. This fir is mostly planted as an ornamental addition in parks and large gardens and is sometimes used as a Christmas tree. Its 1 to 2½ inch long flat needles have a bluish cast underneath and its cones are 2½ to 5 inches long and 1½ to 3 inches broad. The cones of the concolor fir release winged seeds as they disintegrate at maturity.