LINN&AN ARTIFICIAL SYSTEM. 137 



with a singularly fringed or radiated fruit, and the family of agri- 

 mony, among which the agrimonia eupatoria or Common agrimony 

 is a native perennial of this country. 



68. Tryginia : Embracing those plants of the class, 

 which produce flowers with three pistils. 



This order is principally constituted by two genera of plants ; viz. 

 the family reseda, among which the dyer's weed, base rocket, and 

 mignonette are very familiar species ; and the genus euphorbia or 

 spurge, an extensive family of above one hundred species. 



69. Tetragynia: Constituted by such plants of the 

 class, as produce flowers with four pistils. 



The two genera calligonum and aponogeton, are the only kind of 

 vegetables of this department. 



70. Pentagynia : Claiming such plants of the dode- 

 candrous class as bear flowers withjrue pistils. 



The hairy glius, an annual plant of the south of Europe, appears 

 to be the only certain plant of this order. The genus blackwellia 

 is considered a doubtful one. 



71. Dodecagynia : Embracing such plants of the 

 class, as bear flowers with about twelve pistils. 



The genns sempervivum or house-leek, is the only family of 

 plants arranged in this order. The common species is a perennial 

 native of this country, but all the others, are of foreign extraction. 



CLASS XII. ICOSANDRIA. 



72. Character: This class embraces those plants, 

 which have flowers with twenty or more stamens inserted 

 into the calyx or corolla. (F. 185.) 



N 2 



