176 



Bulletin 194 



Box Elder 



(Mich. Trees). 



1. Winter twig, x 1. 



2. Leaf, x 1/2. 



3. Staminate flowering branchlet, x i/4. 



4. Staminate flower, enlarged. 



5. Pistillate flowering branchlet, x %. 



6. Pistillate flower, enlarged. 



7. Fruit, X 1. 



