XQO 



Verrucaria. 



Habitat in cortice Fagi sylvaticas. 

 Obs. Tubercula in hac multo majora quam in Fer- 

 rucaria puncliformi , crusta ad basin cin&a 8C non 

 raro elabentia. 



14. VERRUcARlA mamillana : crusta eifusa cartila- 

 gineo- membranacea la^vigata virescente, tu- 

 berculis sparsis convexiuseulis in ambitu de- 

 pressis medio elevatis papillatis, totis nigris, 

 Afzel. Msc. 



Icon. Tab. nostra 3. f. 2. 

 Habitat in corticibus. E Sierra Leona Afri- 

 cae. Afzelius. 



Obs. Tubercula parum convexa rariora , Iatiora 

 quam in ulla alia specie nota hujus generis, mam- 

 mulam perfe&e referentia, inargine depressa nuda , 

 nec ut in affinibus ibidem crlista circumsepta. In 

 rnedio tuberculi papilla parva demum poro pertu- 

 sa. Superncies tuberculorum oculo armato tenuis- 

 sime puncfcata apparet. Nucleus lentiformis soli- 

 dior ater. 



15. VERRUCARIA gemmata: crusta effusa tenuissi- 

 ma laevigata albo-glaucescente; tuberculis spar- 

 sis hemisphasricis papillatis atris nitidis. 

 Lichen gemmatus Lich. Pr. p. 17. 



Icon. Tab. nostra 3. f. 1. 

 Habitat in cortice Quercus. 



Obs. Tubercula tantum ad basin crusta cingun- 

 tur, rarius poro pertusa observantur , nec fere um- 

 quarn elabentia; majora quam in antecedentibus 



speciebus. 



16. Verrucaria carpinea: crusta tenui fusco-ni- 

 gricante determinata nigro-limitata ; tuberculis 

 hemisphairicis papillatis nigris. 



Verrucaria carpinea PERSOON. (Secund. Exem- 

 plare missum.) 



Ha- 



