PLATE CVI. SUGAR MAPLE. 



1. Branch with immature leaves and staminate 



blossoms, x i. 



2. Staminate flower with calyx, enlarged. 



3. Longitudinal section of staminate flower, en- 



larged. 



4. Branch with immature leaves and pistillate 



blossoms, x 1. 



5. Pistillate flower with calyx, enlarged. 



6. Longitudinal section of flower with both a 



pistil and stamens, enlarged. 



7. Branch with mature leaves and cluster of 



fruit, x 1. 



8. A maple key with exposed seeds, x |. 



9. Winter twig showing lenticels, leaf -scars, 



bud-scale scars, and sharp-pointed opposite 

 buds, x i. 



