PLATE CVII. SILVER MAPLE. 



1. Flowering branch, x J. 



2. Branch with mature leaves and mature fruit, 



x 4. 



3. A wing of a maple key with exposed seed, 



x 1. 



4. A seed, enlarged. 



5. End view of a seed, enlarged. 



6. A winter twig showing buds, lenticels, leaf- 



scars, bud-scale scars and bundle-scars, x 1. 



