58 TALKS AFIELD. 



calyx as before, but the fruiting portion pre- 

 sents a new anomaly. 

 Several little pistils or 

 fruits are borne inside 

 a cavity. The walls of 

 this cavity are made up 

 of the adnate calyx on 

 the outer side and of 

 *'"• *^* the concave receptacle 



on the inside. When the fruits are ripe this 

 fleshy urn closes up more or less completely, 

 and forms altogether the " rose hip " or, as 

 it is often erroneously called, the " berry." 



Among all these complexities of structure 

 in the rosaceous flowers are there any con- 

 stant characters ? We have noticed one de- 

 cisive peculiarity : tlie petals and stamens 

 are borne on the calyx. We may have no- 

 ticed other peculiarities. For instance, the 

 flowers are regular, all the stamens, all the 

 petals, and all the pistils being alike ; the 

 stamens are not united with each other ; 

 the petals are not united with each other ; 

 the sepals are united below into a tube ; 

 the pistils are borne inside the calyx, not be- 

 low it as in some plants, i. e., the pistils are 

 superior. Now, all these plants are Exogens, 

 and they belong to the division Polypetalae ; 



