88 



ELEMENTS OF STRUCTURAL BOTANY. 



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

 syncarpous pistil of five carpels, and the vertical section 

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



calyx-tube be- 

 ing completely 

 adherent or 

 agnate to it. 

 The style is 

 divided into 

 five parts, cor- 

 responding to 

 the five car- 



Fig. 48. Fig. 49. 



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 may be found in the hollow Fi s- 50 - 

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

 remains of the five styles. 



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

 Fig. 60. Cross section of fruit of Crab- Apple. 



