CRYPTOGAMIA ALGi^, Ui 



We have received this Lichen from feveral of our 

 friends under the name of L. probofcideus^ of 

 Linntfus^ with which it by no means agrees, 

 cither according to the figure oi Dilkr.ius, quoted 

 by Linn.<:us^ or DiUenitis\ fpecinnens corrcfpond- 

 ing to that figure, v/hich we carefully examined 

 at Oxford. 



If therefore the plant now defcribed be the fame- 

 which Linn^us intended for his L, probofcideu.\ 

 ha has quoted a figure that has no refcmblanre 

 to It, and negletfted others of the fame author, 

 which are very good, and exa<5lly tally with ic. 



In the midft of thefe uncertainties v.'e judged it the 

 beil method to give a new name and defcrip- 

 ; , tion to a doubtful plant, and to apply fach 



figures as are juft and good, and which wc are 

 fure belong to it ; which will be the nieans of 

 cftablifhing eerfainty for the future. 



deufius Cg. L. umbilicatus undique Isevis. Sp.pl. iGi2. {Fnil. 

 pares, i. 2i-f. 14 .? DiUen. /. 30. f. 11 7 J 



Black-grey Lichen, with little black warts. Jnglis. 



Upon the highland rocks with the preceding. 



It confifts of a fingle urubilicated concave leaf, of 

 a blackidi or fmoky grey colour, a little vvrin- 

 kled or fliriveUed on the upper fide, but quite 

 fmooth and without radicles on the under fide, 

 and the colour a little paler towards the centre. 



The frucflifications are wcry minute, bla'.k tuber- 

 cles. 



