154 I I.NN.V \N ARTIFICIAL SYSTEM. 



The genus nepenthes formerly attributed to this order, is now re- 

 moved to dicecia monadelphia. The order, however, is retained Tor 

 the reception of a New Holland genus named stylidium. 



134. Pentandria : In this department we shall find 

 those plants of the class, producing fite stamens in each 

 flower. 



The three genera ayenia, gluta, and passiflora or passion-flower, 

 were formerly placed here, but the learned Schreber has very cor- 

 rectly removed them to the fifth class. It has been proposed to 

 reinforce this order from the class pentandria digynia, some of the 

 genera of which are related, as decidedly of the proper qualities for 

 such a removal. 



135. Hexandria : The plants of this order, have 

 flowers with six stamens. 



The aristolochia or birth-wort, a curious genus, of which there are 

 many exotic species, and but one indigenous, is the only genus of 

 the hexandrous order. 



136. Octandria : Here we are to expect such plants 

 of the class, as produce flowers with eight stamens. 



The cytinns, a singular parasitical plant growing on the roots of 

 cistus in the south of Europe, has been brought hither from the 

 order dodecandria, of which it originally formed the only example. 



CLASSES FOUNDED ON A CONSIDERATION OF THE SEPARA- 

 TION OF THE STAMENS WITH REGARD TO THE PISTILS. 



137. The classes which we have hitherto explained, 

 are constituted by plants, the flowers of which are per- 

 fect, or in other words, furnished with both stamens and 

 pistils, but in the classes of this division, we shall ascer- 



