S4 



ELEMENTS OF STRUCTURAL BOTAMY. 



ate petals. The stamens are numerous and are inserted 

 on the calyx. 



The structure of the pistil (Figs. 47, 48), however, is 

 somewhat different. On making a cross- section through 

 the young apple, five cells containing the unripe seeds 

 are seen radiating from the centre. These seed-vessels 

 are imbedded in a fleshy mass, the outer limit of which 

 is marked by a circle of green dots, and outside these 

 dots is the flesh which constitutes the eatable part ol 

 the apple. The inner mass, which 

 encloses the core, belongs to the re- 

 ceptacle, whilst the outer edible por- 

 tion is the enlarged calyx. At the end 

 opposite the stem will be found the 

 persistent calyx-teeth. We have in 

 this flower, therefore, a sijncarpous 

 pistil of five carj)els, instead of an 

 apocarpous one, as in Sweet-Brier. 



CRAB-APPLcE. 



Fig. 48. 



