PLATE CVI. SUGAR MAPLE. 



1. Braucb with immature leaves and staminate 



blossoms, s J. 



2. Staminate flower with calyx, enlarged. 



3. Longitudinal section of staminate flower, en- 



larged. 



4. Brancli with immature leaves and pistillate 



blossoms, X *. 



5. Pistillate flower with calyx, enlarged. 



G. Longitudinal section of flower with both a 



pistil and stamens, enlarged. 

 7. Branch with mature leaves and cluster of 



fruit, X I. 

 S. A maple key with exposed seeds, s *. 

 9. Winter twig showing lenticels. leaf -scars, 



bud-scale scars, and sharp-pointed opposite 



buds, X i. 



