32 



ELEMENTS OF STRUCTURAL BOTANY. 



sepals of Sweet- 

 Brier are not en- 

 tirely distinct; 

 their lower lialves 

 cohere to form a 

 tiihe, and the ca- 

 lyx is therefore 

 gamosepalous. 



The corolla con- 

 sists of five sepa- 

 rate jDetals of the 

 same size and 

 shape, and is 

 therefore hoth 

 regular and poly- 

 Pig 43 petalous. 



The stamens are very numerous, and sepaiate from 

 each other. As in the Pea and the "Willow-heib, so in 

 this flower they will he found to be attached lo llie 

 calyx. They are, therefore, periijijnous. 



44, To understand the construction of the pistil, y, u 

 must make a vertical section through the roun('ish 

 green mass which you will find 

 on the under side of the flower. 

 You will then have presented to 

 you some such appearance as 

 that in Fig. 44. The green mass, 

 you will observe, is hollow. Its 

 outer covering is simply the con- 

 tinuation of the calyx-tube. The Fig. 44. 

 lining of this calyx-tube is t],e receptacle of the flouer ; to 

 it are attached the separate carpels which together 



