THE INFLORESCENCE AND FLOWER. 6 1 



As some flowers upon the same plant are more per- 

 fectly developed than others, you should gather several of 

 each kind, and examine them all, to find the best exam- 

 ples of the structure you are studying. 



FIG. 186. Corolla, perigynous. 



FIG. 187. Corolla, epigynous. 



Look at the flowers in Chart i, and observe in each 

 case whether the corolla arises from the receptacle, and 

 whether the calyx is free from the corolla. 



Find upon the other charts all the cases where the corol- 

 la 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 simi- 

 lar insertion ? 



EXERCISE XXV. 

 Union of Floral Whorls with each other Stamens. 



If the stamens have the same insertion as the corolla, 

 use the same words to describe them. For instance, in 

 Fig. 1 88 the stamens are hypogynous ; in Fig. 189, perigy- 

 nous; in Fig. 190, epigynous. 



When you find them arising from the corolla, as seen 

 in Fig. 191, they are said to be epipetalous. 



Sometimes they are consolidated witji the pistil, as shown 

 in Fig. 192 ; then they are gynandrous, or upon the pistil. 



