A 



B 



FIG. 15. Stages in the development 

 of the bean pod 



A, pistil of a bean flower, showing the 

 ovary (o), style (sty), and stigma (sti) ; 

 also the calyx at the base of the pistil. 



B, a pistil a few days older, in which 

 the ovary has grown, and from which 

 the style and stigma have disappeared. 



C, a pistil which has grown into the 

 ripe bean pod. D, a ripe pod opened 

 so as to show the arrangement of the 

 seeds (beans) in the pod ; each seed (s) 

 is attached to a region along the wall 

 of the ovary, known as the placenta 

 (pi), by means of the base of the old 



ovule. All two thirds natural size 



FIG. 16. Seedling of the peanut 



Below the seed leaves or cotyledons (c) is 

 the hypocotyl (K), from the lower end of 

 which the roots (r) have grown ; from the 

 main stem (s) branches (br) and leaves (I) 

 have grown ; at the base of the leaves are 

 stipules (st), and at the tip is the bud (6) 



