68 



Bulletin 194 



Balsam Poplar. Tacamaliac 



(Mich. Trees). 



1. Winter twig, x 1. 



2. Leaf, x %. 



3. Staminate flowering branchlet, x 1/2 . 



4. Staminate flower, enlarged. 



5. Catkin of pistillate flower, x 1/2- 



6. Pistillate flower, enlarged. 



7. Fruit, x Vo. 



