Acer is a genus of trees or shrubs commonly known as Maple. Maples are classified in a family of their own, the Aceraceae. There are approximately 125 species worldwide. The word Acer is derived from a Latin word meaning "sharp" and referring to the characteristic points on the leaves. The maple tree is the national arboreal emblem of Canada.
The Common North American Maple Species
Maple has paired winged key seeds; has red buds and new red stems on red maple; has bark that is generally gray but variable in form; has crescent shaped leaf scar with three bundle scars; has terminal bud that is egg-shaped and slightly larger than lateral buds; has stipule scars absent; has opposite leaf and twigs.
Leaves: opposite , simple or compound, palmately lobed.
Fruit: a double samara.
The Other Hardwoods: