g64 CRYPTOGAMIA ALGJE. 



margins, and fpreading in a circle or ckifler of 

 about the fize of a fixpence. They are of a 

 black brown or dufky fad colour, very thin and 

 brittle, and quite fmooth on both fides. 



No fru6lifications of any kind have as yet been 

 obfcrvcd upon them. 



The leaves when moift are of a black green co- 

 lour. 



L. umbilicatus polyphyllus fupernc glabrum, in- 

 icrne nigrum & cirrollim. L.. po/yrhizos. Lin.Sp. 

 pi. 1618. dijj^erentia Jpenfca emendata. (Haller. 

 hijf. hehet. n. 2000. /. 47. /. 4. Dillcn. mufc- L 

 30. /. 1 30, honn.) 



Dufky rock Lichen, black and fibrous under- 

 neath. Anglis. 



Upon the rocks on the highland mountains not 

 unfrequent. The fame alf:) was communicated , 

 to me by by Dr. Burgefs^ found upon the rocks 

 \w the lowlands. 



This confiils fomctimes of one finuated leaf only^ 

 but more commonly of fcveral, uniicd togcthcf ! 

 by an umbilical cord at the bale, and fpreading 

 t() the breadth of a flnlling or half a crown. 

 I'he upper fide is ftnooth, of a dullcy browrt 

 or fad colour when old and dry, but when frefli 

 of a whiiifh or .cinereous brown. The under 

 fide is quite black, rough and fibrous. 



But 



