LifiNXAN ARTIFICIAL SYSTEM. 



117 



words, the first expressing number, and the second a 

 stamen. 



11. Second Division: The classes of this part, are 

 founded upon the number and insertion of the stamens, 

 as with the eleventh, twelfth, and thirteenth classes. 

 Their names are also derived from two Greek words, 

 one expressing number, and the other a stamen. 



11. Dodecandria ; from dodeka twelve, and andros of aner, a stamen. 



12. Icosandria; from ikosi twenty, and andros of aner, a stamen. 



13. Polyandria ; from polus many, and andros of aner, a stamen. 



12. Third Division : Consists of two classes in which 

 the number and proportion of the stamens differ. These are 

 the fourteenth and fifteenth classes, the names of which 

 are derived from two words, one expressing number, 

 and the other power. 



14. Didynamia; from dis two, and dunamis, power. 



15. Tetradynamia ; from tettaris four, and dunamis, power. 



13. Fourth Division: Here we find five classes 

 in which the stamens are united. They are the six- 

 teenth, seventeenth, eighteenth, nineteenth aud twentieth 

 classes. 



