viii' P, tR E F A C E. 



learner not only to behold at one view the 

 various genera comprehended under each 

 clafs, but alfo to diftinguifh readily their 

 diiSerbnces, . and 'to difcover forne few^ fpe- 

 cies of plants, which would feem to the 

 Tj/r^ improperly clafs'd, and might other- 

 wife, baffle his refearches in inveftigating 

 their names, Thefe irregular fpecies are 

 therefore, to facilitate his enquiries, printed 

 in italics,' > and placed at the foot of the or- 

 der to which they might feem to belong. ■■ 



jA'gain, at, the head of every genus its ge- 

 neric dharadters are exprefs'd more fully, in 

 conformity to the method of the foremen- 

 iioned Swedijh naturalif!:, with references to 

 hh Genera P/antarum, where thofe characters 

 are defcribed at large. 



Under each genus are arranged the feveral 



j^^nVj-, with their trivial names and fpecific 



differences, all taken from the fame author, 



unlefs where new fpecies required new 



narnes to be given them. 



Then follow references to thofe authors 



who have exhibited the beft figures of the 



f&vm-al fpecies. The books referred to arq 



• ^ often 



