EXPLANATION OF THE PLATE. 
Puate CL. Prunus AMERICANA. 
1. A flowering branch, natural size. 
2. Vertical section of a flower, enlarged. 
3. A fruiting branch, natural size. 
4. Vertical section of a fruit, natural size. 
5. Cross section of a fruit, natural size. 
6. A stone, natural size. 
7. An embryo, enlarged. 
8. A winter branchlet, natural size. 
