Rocky-Mountain Maple, a beautiful deciduous tree species native to western North America, has several synonyms that are commonly used by botanists and landscapers. Some of the synonymous names for this tree are Acer glabrum, the Douglas maple, the Green maple, and the Rocky Mountain maple. This magnificent tree species is moderately sized and can grow up to 9 meters tall. It has dense foliage with bright green leaves that turn into a beautiful red or yellow hue in the fall season. These synonyms for the Rocky-Mountain Maple help distinguish it from other maple tree species, making it easier to identify and appreciate its beauty and worth in nature.