Fruits 



i8l 



in the same way. Since the inner wall of the ovary is so hard, 

 there is no need for the seed-coat to harden. Make out the 

 parts of a Date. A Date is not a drupe. 



Fig. 179. — Longitudinal section through the uni- 

 locular drupe of the Peach. (From Thome and 

 BennetTs "Structural and Pb)'siological Ro- 

 tanv ".) 



I-'IG. i3o. — Tr;insverse sec- 

 tion through a Goose- 

 berry ; the firmer outer 

 layer of the pericarp en- 

 closes the succulent flesh : 

 the seeds lie embedded in 

 the latter, and are at- 

 tached b}' long funiculi to 

 two opposite parietal 

 placentas. (I-'rom Thome 

 and Bennett's ".Struc- 

 tural and Physiological 

 Botany "". ) 



A berry is a fruit with a firm outer covering ; the rest of 

 the fruit is juicy. Did you ever look at a young orange? 

 The inner walls of the fruit are ,„. 



covered with tiny hairs. These 

 grow and fill the cavities as the 

 fruit ripens. They make the 

 juicy part of the fruit. 



A young Apple shows five 

 carpels surrounded by a green 

 cup. This cup grows and ripens 

 with the ovaries. A Rose Hip 

 has a fruit built on a similar 

 plan, only there are more 

 carpels. 



The part outside the outer 

 double line, in Fig. iSi, is the 

 receptacle which bears the calyx 

 at the top. It encloses and is united with the five carpels, the 

 core. The mesocarp lies between the outer and inner double 

 lines of the diagram. The inner hard shining layer surround- 

 ing the seeds is the endocarp. 



lIG. iSi. — Longitudinal section 

 through an .\pple : c, dry persist- 

 ent caly.x limb ; E, loculi with car- 

 tilaginous endocarp ; T, mesocarp. 

 (From Thome and Bennett's 

 "Structural and Physiological 

 Botany ''. } 



