Yellow Birch 



Yellow Birch 



a. Winter twig, x 1. 



b. Portion of twig, enlarged. 



c. Leaf, }c i/^. 



d. Flowering branchlet, x 1/2. 



e. Fruiting branchlet, X 1/2. 



f. Fruit, X 10. 



River Birch 



^5^ 







[150] 



