Opegrapha. Holotea, 

 Icon. Pers. 1. c. T. 3. f. 4. A. a. 



Habitat in ramis Fagi sylv. exsiccatis. 



Obs. Gmsta maculiformis rotundata elongata dif- 

 formis. JLirellas minutissimas supra crustam affixa&. 



Opegrapha epiphega: crusta subnulla; lirellis 

 simplicibus oblongis planiusculis adpressis con- 

 fertissimis, in maculas latas difFormes atras 



aggregatis. 



Lichen epiphegus. Lich. Pr. p. qi. (ExcI. syn. 

 Hoffm. 8c WiGG.). Opegrapha faginea 

 Pers. in Ust. Ann. d. Bot. St. 7. p. 31. 



Habitat in Fagi sylvaticae ramis. 



Obs. In Lichene juiiiori Lirellae ad macula? peri- 

 pheriam sparsae. Per astatern totus Lichen rtigo- 

 sus &C maculas perquam latas efformat. 



Opegrapha macularis: crusta subnulla; lirel- 

 iis simplicibus subrotundis convexis, in ma- 

 cuiam subrotundam nigram congestis. 



Lichen macularis Lich. Pr. p. Qi Opegra* 



pha quercina. Pers. in Ust. Ann. d. Bot. 

 St. 7. p- 32. 



Habitat ad ramos juniores Quercus. 



Obs. Macula haud raro etiam irregularis 8C suh- 

 effusa, ex lireilis ipsis nigra apparet. Habitu 8C 

 adspe&u perquam similes sunt O. herpetica, conglo~ 

 merata, epivhega 8c rnacularis. Lireiiae harum per- 

 exkuae. 



* * Sym- 



