so 



Bulletin 194 



Black Walnut 



(Mich. Trees). 



1. Winter twig, x 1. 



2. Leaf, x i/e. 



3. Leaflet, x V.. 



4. Floweriug branclilet, x '^A. 



5. Staminate flower, back view, enlarged. 



6. Pistillate flower, enlarged. 



7. Fruit, X %. 



