116 



Bulletin 194 



Bur Oak. Over-cup Oak. Mossj-cu]) Oak 



(Mich. Trees). 



1. Winter twig, x 2. 



2. Leaf, x %. 



3. Flowering branclilet, x 14. 



4. Staminate flower, enlarged. 



5. Pistillate, enlarged. 



6. Fruit, X 1. 



