DRUPACEiE 



393 



called the "calyx tube." If it is a calyx tube, then petals 

 and stamens are inserted upon it. It is very probable that 

 this tube is receptacle and that calyx, corolla and stamens are 

 mounted thereupon. There is one pistil, situated at the 

 bottom of the hollow receptacle; the ovary is one-celled and 

 two-ovuled; the style is single and terminal and bears a 

 small, head-shaped stigma. 



epicarp 

 mesocarp 



•ndocarp 

 or ' 

 jfone' 



testa 



emhrijo 



Fig. 164. — Median lengthwise section of young cherry fruit (drupe). 



Fruit. — The fruit is a drupe (Fig. 164), that is, one with 

 a single seed surrounded by a stony endocarp, fleshy meso- 

 carp, and an outer skin or exocarp (epicarp). However, if 

 one examines the young ovary of a Prunus flower he will find 



