Hill's Oak. Northern Pin Oak. Black Oak 



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- Fruit, x I. 



114 



