C 95 ] 
METHODICAL DISPOSITION 
OF THE 
MAPLES 
OF 
NORTH AMERICA. 
INCLUDING TWO EUROPEAN SPECIES. 
Polyandna dîœcia, Linn. Mcera, Juss. 
FIRST SECTION. 
Sessile flowers. {Fructiflcation vernal.'^ 
1. White Maple. . . Acer eriocarpum. 
2. Red-flowering Maple, . Acer ruhrum. 
SECOND SECTION. 
Pedunculated flowers. Fructification autumnal. 
3. Sugar Maple, 
. Acer saccharinum. 
4. Black Sugar Maple, 
. Acer nigrum. 
5. Norway Maple, 
. Acer platanoides. 
6. Sycamore, 
. Acer pseudo-plat anus. 
7. Aloose Wood, 
. Acer striatum. 
8. Box Elder, 
Acer negundo. 
9. Mountain Maple, 
. Acer montanum. 
