8i4 CRYPTOGAMIA ALGJE. 



Black cupped Lichen. 



On the bark of trees,"'and on walls common. 



The cufl: is grey, or afh colour'd, the fhields 



fmall, numerous and black, with white margins. 

 p. A variety of this often occurs on walls with a 



thicker and whiter cruft, having Ihields with 



wrinkkd inflcxed margins. 



par^Ilus 25 L. cruflacciis albus, peltis concavis obtufis palli- 



dis. >^yjt. ?iat. edi(. \^. p. 806. {Dillen. mufc. /. 



18./. 10,) 

 Crawfifli-eye Lichen. 



Upon walls and rocks, but not very common. 

 The cruft fprcads clofcly and widely upon itones 



and rocks, tnd is rough, tartarcous, and afn- 



colour'd, of a tough coriaceous fubftance. 

 The ftiields are numerous and crowded, havin^y 



white or afn-colour'd, (hallow, plain difcs, with 



obtule margins. 

 The tre'fich call this L;chen Farelle^ and dye a red 



colour with it. 



C. * Imbricati. 



centrifugus L. imbricatus, foliolls obfolete muhihdis Isvibns 

 26. albidis centrifugis, fcuieliis rufo-fufcis. Sp. pL 



1609. (LiiJ. Flor. Lappon. /. 11./. 2. Dillen* 

 mufc.t. 24./. 75.) 

 Greenifh chefnut-fhielded Lichen. Anglis. 

 Upon the Highland rocks frequent, and in the 

 king's park at Edifiburgh. 



This 



