White Oak 



Fruit, X 1. 

 Leaf, X 1/3. 

 Winter twig, x 1. 

 Staminate flower, enlarged. 

 Pistillate flower, enlarged. 



Bur Oak 



a. Fruit, x 1. 



b. Leaf, x 1/3. 



c. Flowering branchlet, x i/^. 



[180] 



