^iG CRYPTOGAMIA ALG.^. 



of a pule yellow colour, with a tinge of green, 

 fometiines a glaucous colour^ and grow upon 

 one another, on the ground or rocks, in cluftersj 

 fometiines, but not always, of a circular forrrir 



The fliields are of a yellowifli red or tawny colour, 

 fmall at firft, and furrounded with an obtufe 

 margin, of the fame colour as the leaves, but 

 grow frequently afterwards to be almoft: as large 

 as the leaves thenifekes. When dry, or young, 

 they are ufually flat-, when moiftened, or full 

 grown, thev become tunnid and convex, and 

 lo elevated fometimes a? to hide or overhang 

 their margins. 



The leaves, when dry, are of a yellowifli white, 

 and fometimes a glaucous^ colour, and fmell 

 like old tobacco. 



This is certainly a very diftinfl fpecies from the 

 former, though unnoticed by Linn^us. 



fa:<atilis 28 L. imbricatus, foliolis fmuatis fcabris lacunofis, 



fcutcllis badils. Syjl. nat. edii, i^^p. 806. S-^.fh 



1609. iDillen. t. 24./. 83.; 

 Grey-blue pitted Lichen. Anglis. 

 Staneraw. ScAlis aufiralibus. 

 Ulpon trunks of trees, rocks, tiles, and old wood, 



very common. 

 This forms a circle two or three inches in diameter 



confifting of imbricated leaves, varioufly laci- 



niated, 



