Hill's Oak. Northern Pin Oak. Black Oak 



1. Winter twig, x i. 



2. Portion o>f twig, enlarged. 



3. Leaf, x y 2 . 



4. Flowering branchlet, x l / 2 . 



5. Staminate flower, enlarged. 



6. Pistillate flower, enlarged. 



7. Fruit, x i. 



114 



