156 



Bulletin 194 



Wild Plum. Canada Plum 



(Mich. Trees). 



1. Winter twig, x 1. 



2. Portion of twig, enlarged. 



3. Leaf, x i/o. 



4. Flowering branchlet, x i/^. 



5. Vertical section of flower, enlarged. 



6. Fruiting branchlet, x i^. 



