KUPATORIUM PERFOLIATUM. 15 



©f AvicENNA, mention is made of the eupato- 

 rium ; but from the imperfect account which 

 he has ojiven, and from the obscurity which 

 pervades the descriptions of the older botani- 

 cal writers, it is impossible to determine its 

 precise character. By some, however, the 

 eupatorium of Avicenna is supposed to be the 

 eupatorium cannabinum of Casper Bauhin. 

 The celebrated Willdenow, in his enumera- 

 tion of the species of this genus of plants, has 

 placed under the name of eupatorium canna- 

 binum, this species of Casper Bauhin, which 

 FuscHius has noticed as the eupatorium adul- 

 terinum. In the Historia Plantarum Univer- 

 salis of John Bauhin we are furnished with a 

 description, at some length, of the eupatorium 

 adulterinum. This species has been consider- 

 ed, by some, as belonging to the genus eupa- 

 torium ; but this arrangement has been reject- 

 ed by Professor Willden©w, 



Miller enumerates forty-nine species of 

 this genus of plants ; and in the late work of 

 Willdenow seventy-one species are given, of 



