38 ELEMENTS OF STRUCTURAL BOTANY. 



(Fig. 50) will show you that in this case we have a 

 syncarpous pistil of five carpels, and the vertical s< 

 (Fig. 49) shows that the ovary is here truly iniw'nn, the 



ealyx-tui 



\ ing completely 



adherent or 

 adnate to it. 

 The stjle is 

 divided into 

 five parts, cor- 

 responding to 

 the five car- 

 Fig. 48. Fig. 49. P G * S ' 



53. At maturity, whilst the pistil or central organ has 

 enlarged considerably, it will be found that the calyx- 

 tube, which is adherent to it, has also grown very much. 

 It is, in fact, the largely developed calyx-tube which con- 

 stitutes the edible part of the apple, the true pistil forming 

 the core. It is not very easy to distin- 

 guish the line which separates these two 

 parts of the ripe fruit, but if a cross- 

 section be made through the apple a circle 

 of greenish dots may generally be made 

 out at the outer limit of the core. A fruit 

 of this sort is called a, pome. The wither- 

 ed calyx-teeth maybe found in the hollow 

 at the end opposite the stem, as also, generally, 

 remains of the five styles. 



Fig. 48. Flower of Crab-Apple. Fig 49. Vertical section of ovary. 

 Fig. 50. Cross section of fruit of Crab- Apple. 



