150 Mr. Tit rne it's Descriptions of Eight New British Lichens. 



from their naturally bursting, and which are often confluent to 

 some length, are in P. Borreri scattered without order over the 

 whole plant, and sometimes in old specimens so numerous as 

 to cover the whole of it except the tips. The fruit in both is 

 alike, but is produced still more sparingly upon P. Borreri 

 than on P. saxatilis. P. Borreri belongs to that division of 

 the genus Parmelia, which Acharius in his Methodus has 

 called Circinaria, and must be placed between P. saaatilis and 

 conspersa. 



VIII. An 



