Sweet Birch. Black Birch. Cherry Birch 



1. Winter twig, x i. 



2. Portion of twig, enlarged. 



3. Leaf, x y 2 . 



4. Flowering branchlet, x */>. 



5. Staminate flower, enlarged. 



6. Pistillate flower, enlarged. 



7. Fruiting branchlet, x }/2. 



8. Fruit, enlarged. 



86 



