90 Mr. Turner's Descriptions of 



of botany in greater confusion than ever. In this number is L. act- 

 cularis, with which, from its former name of fulvus, it might be 

 presumed that L. chri/socephcilus had a strong affinity: nor is there 

 any thing in the specific character that satisfactorily destroys such 

 an idea ; and yet, considered as to their substance, nature, tuber- 

 cles, or crust, they can by no means be arranged even in the same 

 genus. 



Lichen fusceelus. 



2. L. crusta crass& laevi areolata grisea intus nigra ; thalamis pla- 

 ins subimmersis minutis atris. 



Tab. VIII. Fig. 2. 



Habitat in ecclesiarum muris apud Bradwell et Gorlestone in 

 SufTolcia. 



Crusta absque norma effusa, lineam et ultra crassa, superficie 

 aequalis, lsevis, rimosa, aut, ut aptius dicam, in areolas figurae 

 magnitudinisque incertaa difFracta ; colore extus pallide griseo, 

 intus nigro. Thalami valde minuti, atri, satis copiose in crustae 

 areolis nascuntur; juniores, ut in L. endocarpo et miniato im- 

 mersi ; adultiores fere sessiles ; omnes ambitu subrotundi, su- 

 perficie plani, nunquam, ut in Verrucariis reliquis, pertusi, 

 marginis expertes. Crusta aqua madefacta colorem non mutat, 

 sin digito fricetur fit viridis, speciemque pristinam nunquam 

 reversuram, omnino amittit. 



This Lichen is by no means uncommon on churches about Yar- 

 mouth, growing in scattered patches of irregular size and figure, 

 and generally preferring loose sand stone at no great distance 

 from the ground. From its dull colour, scarcely differing from that 

 of the substance on which it grows, and its imperfect appearance, 

 it is easily overlooked ; yet is, nevertheless, not only a distinct 



but 



