This plant fo thoroughly agrees with the defcription of Hudfon's C. nigrefcens 

 in the Flora Anglica, that it is with fome hesitation I publifii it under another 

 name, but my friend Dawfon Turner informs me there are authentic fpecimens 

 of that plant extant, which prove the prefent to be an entirely diftinft fpeci?s. 



The fubftance is ftiff and rather rigid : in drying, the color becomes darkey 

 and the plant adheres to paper, though but very flightly to glafs. 



A. C. rubro-ater, natural fize. 



B. Ditto magnified 2. 



C. Ditto ditto 1. 



