Table of characters for selected species of Maples of Wisconsin. There is considerable variation among individuals, so be careful to study the characters discussed in class and do not learn to distinguish these species by the general appearance in this table. The fruits for example are not all at the same stage of develoment and the colors shown are not diagnostic.

Species Leaf Bud Fruit
Acer spicatum Note that the bud has only 2 visible outer scales. All of our other maples have more than 2 outer scales.
Acer platanoides Bud scales either deep red/purple or green.

Acer saccharum

Bud scales brown
Acer saccharinum Bud scales red--very similar to A. rubrum.
Acer rubrum Bud scales red--very similar to A. saccharinum