THE FLOWER. 



EXERCISE XXXVIII. 

 Kinds of Calyx. 



FIG. 182. 



FIG. 183. 



Polyscpalous Calyx. 



Gamoscpa.ous Calyx. 



A POLYSEP'ALOUS CALYX has its sepals distinct from 

 each other, so that each one can be pulled off separately. 



A GAMOSEP'ALOUS CALYX has its sepals more or 

 less grown together by their edges, so that, if you 

 pull one, the whole calyx comes off. 



Having used schedules twenty-two and twenty- 

 three till the names of the parts that compose the 

 calyx, corolla, and perianth, are firmly associated 

 with the parts themselves, we are now ready to begin 

 their description. Schedule twenty-four shows you 

 where to write what you have to say about them. 

 Observe first whether the sepals of a calyx, the 

 petals of a corolla, or the leaves of a perianth, are 

 grown together or not. Sometimes they cohere so 

 slightly, that close observation is necessary to ascer- 

 tain it. Be cautious about pronouncing a corolla 

 polypetalous until you have made many observations 

 upon different specimens of it. Do not guess. 



You can count the petals of gamopetalous corollas 

 by their marks of cohesion. 



