04 



Bulletin 194 



American Aspen. Trembling Poplar. Popple 



(Mich. Trees). 

 Winter twig, x 2. 

 Leaf, X 1. 



Staminate flowering branclilet, x V.. 

 Staminate flower, enlarged. 

 Pistillate flowering branchlot, x Vj- 

 Pistillate flower, enlarged. 

 Fruit, X I/.. 



