Uo 



Bulletin 194 



Sycamore. Buttonwood 



(Mich. Trees). 



1. Winter twig, x 1. 



2. Portion of twig, side view, x 1. 



3. Vertical section of twig, summer 



bud and leaf petiole, enlarged. 



4. Leaf, x %. 



5. Flowering branchlet, x i/o. 



6. Staminate flower, enlarged. 



7. Pistillate flower, enlarged. 



8. Fruit, X %. 



J). Achene, enlarged. 



