S52 



Improvement 

 •f his method. 



M. Guyares 



arrangement. 



Useful to be- 

 t^inners and 

 those who wish 

 for a general 

 knowledge 

 merely. 



fCIENTIflC NEWS. 



It is of importance, however, that Tournefort*s should 

 not be lost, as well on account of the celebrity of its author^ 

 as for the utility of which it may still prove to young stu* 

 dents. By these motives Mr. Guyart has been induced to 

 compose a new classification of vegetables, founded on the 

 method of Tournefort; but in which, availing himself of 

 the progress subsequently made in the science of botany, he 

 has formed his classes from more striking and constant cha- 

 racters than those adopted by Tournefort. Thus he has 

 given fresh youth to the method of that botanist, and ren^ 

 dered it more natural. 



Tournefort's new method, as proposed by Mr, Guyart, 

 consists of sixteen classes. The first eight are formed of 

 plants with complete simple flowers. The first containing 

 the monopetalous : the second, the personate: the third, 

 the labiate: the fourth, the cruciform: the fifth, the rosa-, 

 ceous : the sixth, the umbelliferous : the seventh, the cary- 

 ophyllaceous : the eighth, the Icguniinous. The next three 

 include the plants with complete compound flowers, with 

 united anthers : the semifloscular, the floscular, and the ra- 

 diate. The four following are appropriated to the distinct 

 incomplete flowers: the apetalous, the amentaceous, the 

 glumaceous, and the liliaceous. The sixteenth and last is 

 assigned to the anomalous plants, or those with indistinct 

 incomplete flowers. 



This classification, as the author observes, is not free 

 from defects ; but, notwithstanding its imperfections, al- 

 most unavoidable, perhaps, in such an undertaking, in the 

 opinion of some botanists of celebrity, whom he has con- 

 sulted, it will much facilitate the study to beginners, and is 

 still better adapted to those, who, not having time to cul- 

 tivate the science to its full extent, require only an acquaint, 

 ance with its elements. 



INDEX' 



