THE FLOWEK. 45 



FTG. 53. 



Corolla, epigynous. 



If not quite certain about these characters in your 

 specimens, write your label with a mark of interro- 

 gation, to show doubt. Do not be discouraged if 

 these points of structure remain for some time trouble- 

 some ones to discover. Try to find them out, and, if 

 you succeed, it is well ; but, if not, it is well also. 



As some flowers upon the same plant are more 

 perfectly developed than others, you should gather 

 several of each kind, and examine them all, to find 

 the best examples of the structure you are studying. 



Look at the flowers in chart 1, .and observe in 

 each case whether the corolla arises from the re- 

 ceptacle, and whether the calyx is free from the 

 corolla. 



Find upon the other charts all the cases where the 

 corolla is inserted under the ovary, and is free from 

 the calyx. 



Observe the flowers on chart 2. Where is the 

 corolla inserted in these figures ? Can you find upon 

 the other charts any pictures of flowers where the 

 corolla has a similar insertion ? 



