102 



BOTANY. 



Dehiscence is SEPTIFRAGAL where the valves fall 

 away, leaving the dissepiments behind attached to the 

 axis (Figs. 318 and 319). 



FIG. 316. 



FIG. 317. 



FIG. 318. 



IRREGULAR DEHISCENCE. Seeds are sometimes dis- 

 charged through chinks, or pores (porous dehiscence) 

 (Fig. 320), or the ovary may burst in some part irregularly. 

 Name the modes of dehiscence given on the charts. 



Now compare the 

 capsules in your collec- 

 tion with the figures 

 and definitions given in 

 this exercise, and deter- 



FlG. 



319- 



FIG. 



mine, if you can, the mode of dehiscence of each of them. 



How would you produce loculicidal dehiscence in the 

 compound ovary you have made with leaves, as directed 

 in the opening of this exercise ? 



How septicidal ? How septifragal ? 



