APPLES AND THEIR LIKE 



291 



that the edible portion 

 of the apple is thickened 

 calyx -tube, with the 

 spaces between the car- 

 pels filled up by the 

 thickening walls of the 

 pistil, and the line of 

 demarcation between the 

 pistil and calyx marked 

 by the fibrous bundles 

 and connecting tissue 

 shown in the cross -sec- 

 tions (Figs. 295, 296). 



346. The interpretation 

 of the architecture of 

 the apple is not so 

 simple as it looks, how- 

 ever. Some botanists 

 believe that the outer 

 and fleshy portion rep- 

 resents calyx, but that 

 the receptacle extends 

 upwards and lines this 

 calyx -tube (and thereby 

 immediately invests the 

 core), and bears the 

 stamens on its summit. 

 That is, the flower may 



Fio. 299. 

 Variations in the apple 



