THE FRtjIT AND THE SEED 



271 



such a pod dehisces in one slit and in its ventral suture, it is 



called a follicle. Sometimes such follicles are doubled, as in 



Vinca originating 



from two apocarpous 



fruit-leaves. If a 



one-carp ell ed pod 



slits both in its 



ventral and dorsal 



sutures, as in the 



Horse gram, Pea, and 



in most Leguminosffi, 



it is called a legume. 



Crucifers have siliques consisting of two carpels, divided by a 

 false septum into two loculi, the seeds being 

 borne b}^ the frame of that septum. All other 



Fig:. 262.— Follicle of Madar. 



Fig. 263. 

 Legume of Pea. 



Fig. 264. 



Silique of a 



Crucifer. 



Fig. 265.— Loculicidal capsule of 

 Lagerstroemia. 



dry dehiscent pods that cannot be classed under follicles, legumes 

 or siliques, are simply called capsules. They are distinguished 

 according to the number of cells or loculi they contain and to 

 their mode of dehiscence. Commonly, they dehisce in longitudinal 

 slits beginning from the top and dividing the capsule into so 

 many open parts as the capsule contains cells. If the line of 

 dehiscence is along the mid-rib of the carpels, the dehiscence is 

 loculicidal, as in Lagerstro^mia ; if it is along the partition walls 



