86 



FRUITS AND SEEDS 



enclocarp develops as a papery core. The apple (Fig. 03), pear 

 and qiiiiico are typical of this group. 



The true berry is a more or less leathery structure enclosing 

 a mass of seeds. It may consist of the ovary only, or of the 

 ovary enclosed in the cal^'x. Many plants belonging to a great 

 diversity of families produce fruits of this type. Among the 



Fio. 63. — The apple, the pome type of fruit. 



most important are the gooseberry, huckleberry, cranberry, 

 grape, orange, melon and cucumber. However, melons, cucum- 

 bers and gourds and other fruits belonging to the family Cucur- 

 hitacecp are frequently given a special name of " pepo." 



The accessory fruit is the fleshy receptacle of a single flower 

 covered wuth achenes which are usually called seeds ; the straw- 

 berry belongs to this t)'pe. 



The dry fruits are those in which the ovaries develop into 

 dry pods. If this pod opens and releases the seeds it is dehiscent 



