Aspen 



1. Winter twig, x 2. 



2. Leaf, x i. 



3. vStaminate flowering branchlet, x */ 2 . 



4. Staminate flower, enlarged. 



5. Pistillate flowering branchlet, x l / 2 . 



6. Pistillate flower, enlarged. 



7. Fruit, x Y-2. 



48 



