CRYPTOGAMIA ALG.r,. ^25 



firft with a grey pellicle, but afterwards turning 

 black. As they become old their outfidcs and 

 margins are foliaceous, or covered with nvinurc 

 leaves, fo that they acquire a crifped appear- 

 ance. The Ipecimens of this, after being kept 

 for Ibme years in paper, lofe their fine glaucous 

 colour, and turn to a ruffet grey. Hiilkr and 

 DiUenius make this a d'.ftincft fpecies, and per- 

 haps it is fo, but there feem to be h.ardly lufS- 

 cient limits. The latter has given lb ii! a ftpure 

 of it, that I fhould hardly have imagined it was 

 defigned for it, if I had not feen the fpecimens 

 of the author. See Dihen mufc. t. 24. /. 71. 

 That of Micheli tab. 43. ord. 23./, 2. (which 

 was fuppofcd to be intended for the precedinn-j 

 gives a much better idea of it. 



pul-iis ^ji L. imbricatus, foliolls peranguflis implexis lacini- 

 atis fufcis, fuperne convexis, apicibus demiiri;>. 

 fcuteliis pullis. (Dilk',:. ;nufc. t. 2a. f. 6g. Michel 

 gen. /. 51. era. 30./. 6.) 



Small-cut brown Tichen. AnzHs. 



Upon rocks not unfrequcnt, as in the kind's park, 

 &c. 



This grows horizontally upcn rocks, formin-^ a 

 brown cruft, compofcd of numerous, very fmaJk 

 finely laciniated, and denkdy imbricated fmooth 

 leaves, having their upper furface convex, and 

 their fegments and extreirjities all defiex'd. 

 Their under fide whinfli. 



The 



