HACKBERRY. 



307 



Plate 40. Celtis occidentalis. Hackberry. 



i. Flowering branch, one-half natural size. 2. Fruiting branch, one- 

 half natural size. 3. Winter twig, one-half natural size. 4. Staminate flower 

 before straightening of filaments, enlarged. 5- Staminate flower, expanded, 

 enlarged. 6. Perfect flower, enlarged. 7. Longitudinal section of perfect 

 flower, enlarged. 8. Longitudinal section of fruit, natural size. 9. Trans- 

 verse section of fruit, natural size. 10. Diagram of flower. 



