31 



The Compendium Florce Philadelphm. The 

 Flomla Bostoniensis^ Ed. 2. The Catalogue 

 of Plants growing within thirty miles of JYeW' 

 York, and the respective Floras of Kentucky 

 and of the District of Columbia. These 

 have been omitted by preceding writers. 

 A Florula Ludoviciana has also been pub- 

 lished, but as it is a mere compilation from 

 the loose and inaccurate notices of the 

 Abbe Robin, it is extremely doubtful 

 whether it has added any thing to the stock 

 of our information on the botany of that re- 

 gion. The more recent, extensive, and ac- 

 curate observations of Mr. Nuttall, as con- 

 tained in his Genera of JYorth American 

 Plants, have ably supplied any deficiencies 

 which the preceding work was intended to 

 remedy. The American Journal of Science^ 

 to which we have frequently referred in 

 collecting materials for this essay, and 

 which, under the able direction of Professor 

 Silliman, has rendered many and important 

 services to the cause of science in America, 

 contains descriptions of new species by 

 Nuttall, De Schweinitz, Leavenworth, Tor- 

 rey, Ives, and others. The obscure and dif- 

 ficult genus Carex, has been lately investi- 



