CRYPTOGAMIA ALOiE. 803 



numerous crowded, fmooth, angular warts, of 



the fame colour as the cruft. Upon the head of 



each wart are fmall black imprciTed pundures, 



iv :\.\. . ;- \,j from one to ten in number, as if made with the 



-c. point of a pin, under each of which pundtures, 



if the wart be cut tranfverfcly, will be found a 



• ,■ hollow fphserical cell. In the old fpeciniens the 



- ' pundures open of themfelves, and difcover the 



• .' ' '. . cells, 



Jangidnari' L. leprofus cinereo-vlrefcens, tubcrculis atris. Sf. 

 ^^ 6. pi j5o7. (Dillen. mujc. t. iS.f. 3.) 



Black nobbed Lichen. A}7glii. 

 Upon the bark of trees frequent^ and upon rocks, 

 -■ ■ ' and fometimes upon the ground. 



The cruft is afh-colour'd, with a lince of oreen. 



. so 



The tubercles are quite bl.ick, \vith(,ut glofs, 

 ' ' ' ■ about the fize of a pin's head, convex when 



old, often nearly globular, and without a mar- 

 gin. Linn^us fays, that when broken they are 

 • ' ; red within. We have fometimes found them fo 



•' ' ■ when growing upon rocks, but tliis is by no means 



a certain mark of diilindion. 



The ground of this, when found on rocks, is 

 rough, not fmooth, and telTellated like the fol- 

 lowing. 



CMlcareus yl L. leprofus candidus, tuberculis atris, Sp. pi, 1607, 



(DWai. mufc. /. iS./. 8.) 

 ■■ Black- nobb'd Dyer's Lichen. AngUs, 



F f f 2 Upon 



