24: 



THE FIRST BOOK OF BOTANY. 



EXEKCISE VI. 

 Margins. 



MARGIN. THE edge of a leaf-blade is called its 



margin. 



Fia. 12. 



FIG. 13. 



Entire. 



Serrate. 



An ENTIRE margin is even and smooth, like Fig. 12. 

 A SER'RATE margin has sharp teeth pointing for- 

 ward like a saw (see Fig. 13). 



FIG. 14. 



FIG. 15. 



FIG. 16. 



Dentate. Dentate. Crenate. 



A DENTATE margin has sharp teeth pointing out- 





