stamens liypogynous 



CLASS. 

 1. 



stamens perigynous 



2. 



(anthers 

 stamens epigynous ^ ,„,itg^| _ 



3. 



anthers 





free 



4. 



INTRODUCTION TO BOTANY. Ivii 



classes, in which the insertion is 1. epigynous, 2. perigynous, 

 and 3. hypogynous. 



The monopetalous, whose corolla always bears the stamens, 

 also form three classes :■ — 



Monopet. 

 with 



It will be observed that the third class of stamens epigy- 

 nous, has been subdivided, according as the stamens are with 

 free, or united anthers, thereby increasing the number of 

 monopetalous classes to four. 



Tl)ese four classes, with the three classes of dicotyledonous 

 apetalous plants, and the four monocotyledonoiis and acotijledo- 

 nous plants, form in all, eleven classes. 



The dicotyledonous polypetalous plants are divided into three 

 classes of 1. epigynous, 'I. perigynous, 3. hypogynous. 



In the fifteenth and last Jussieuian class are placed all the 

 dicotyledonous plants, whose flowers are essentially monoecious, 

 (unisexual,) and those separated on distinct individuals, that 

 is, dicscious. These are called irregular diclinous plants. Each 

 of these fifteen classes, contains a more or less considerable 

 number of natural families, all united by the common charac- 

 ter, which constitutes the class. The characters of the 

 different families are given by Jussieu, in his Genera of Plants. 

 De Candolle,' the great botanist, has published a series of 

 families of plants, ari'anged in an order, almost the inverse of 

 Jussieu's. 



' Professor Daubeny, in 1832, delivered several able Lectures, at the Labo- 

 ratory, illustrative of DecandoUe's system. 



