160 LINN/EAN ARTIFICIAL SYSTKM. 



class, the barren flowers of which, have the filaments of 

 their stamens united into one set. 



The common juniper, prickly butcher's-broom, and common yew 

 of this country, should be collected as specimens. Amon? the foreign 

 illustrations, are the Bonrbon-palm, the nutmeg tree, Sir Joseph 

 Banks' pine, and the singular pitcher-plant of Ceylon. 



CLASS XXIII. POLYGAMIA. 



160. Character: This class includes such plants, as 

 produce three different kinds of flowers; viz. some with 

 pistils only, some with stamens only, and others with 

 both; and these flowers situated on the same individual 

 plant, or on two or three different plants of the same 

 species. 



His class possesses a considerable number of genera, some of 

 which, have very natural affinities to each other. Holcus or Indian 

 millet, ischaemum, manisuris, aegilops or hard-grass, andropogon 

 or man's-beard, belong to the order gramina; mimosa, gleditschia, 

 and ceratonia or carob-tree, to the lomentacecc ; musa to the scita- 

 tninece ; the ash to irpiarice ; the nettle-tree or celtis,pellitory and 

 tig, to the order scabrida;. 



161. Division: The orders of this class are three; 

 viz. moncecia, dicecia, and tricecia, all established on a 

 consideration of the separation of the stamens and pistils. 



162. Moncecia: Embracing those plants of the class, 

 which have perfect flowers accompanied with barren or 



fertile flowers, or both, on the same plant. 



Among the plants of this character, are the banana-tree and plan- 

 tain-tree, two Indian species of musa; the white helebore, a species 



