CLASS ICOSAN'DRIA, HOW DISTINGUISHED. 129 



Now, my dear Edward, tell me, do you recol- 

 lect how the twelfth class, Icosandria, is distin- 

 guished ? 



EDWARD. 



I believe there are more than twenty stamens in 

 each flower ; and if the petals are pulled off, the 

 stamens remain on the receptacle. 



MOTHER. 



Bring your little drawing of the classes [PLATE 

 2.], and see, yourself, whether you are right. 



EDWARD. 



Oh ! I have made a great mistake ! It is in 

 the thirteenth class, Polyandria, that the stamens 

 grow upon the receptacle. In Icosandria they are 

 fastened to the sides of the calyx. 



MOTHER. 



Here are two plants, a Dog-rose and a Butter- 

 cup ; tell me to what class each of them belongs ? 



EDWARD. 



I have pulled off the calyx of both flowers ; and 

 I think that the Rose is in the class Icosandria, 

 and the Butter-cup in Polyandria, for all the 

 stamens of the rose came off along with the calyx, 

 but in the butter-cup they remain on the re- 

 ceptacle. 



K 



