256 Prof. Dr. C. Mereschkovsky's Diagnoses 



Var. nmralis, forma ohscura^ Mei'. 

 Mereschkovsky, /. c. 



Apotheciis obscuris, nigricaiitibus. Ad muros calcareo et cementum 

 earum. 



Spec. orig. in herb. Conservat. botaii. Geneva. 

 Geneva (Helvetia). 



Lecanora atra, var. urceolafa, Mer. (Mass. in herb.). 



Mereschkovsky, Schedulse ad Ijicli. Ross, exsiccatos, Kazan, 1913 

 (no. 60). 



Apothecia thallo immersa, habitu valde apothecia Aspiciliarum 

 commemorant. Ad saxa dioritica. 



Spec. orig. (1) in herb. meoKazani, (2) in Mereschkovsky, 

 Licli. Ross. exs. no. 60. 

 Tauria. 



Lecanora campestrisj forma subhmnersa, Mer. 



Mereschkovsky, I. c, etiam in hujus Tabulae Generum Lichenum (19];3), 

 Lecanora, ii. no. 41 (ex Agde, H6rault (Gallia)). 



Apotheciis nigrescentibus, iu thallo cinereo subimmersis. 



Spec. orig. (1) in herb, meo Kuzani, (2) in Tab. Gen. 

 Licli. no. 41. 

 Agde (Gallia). 



Var. doceUina, Mer. 



Mereschkovsky, Tabulae Generum Lichenum (1913), Lecanora, ii. 

 no. 38 (ex Gallia, Docolle, Vusges). 



Thallus parum evolutas, dispersvis, granulatus. Ad saxa arenacea. 



Spec. orig. (1) in herb, nieo Kazani, (2) in Tab. Gen. 

 Lich. no. 38. 

 Gallia. 



Lecanora carp>ineay forma carneopalliday Mer. 

 Mereschkovskj', Nachtr. z, Flechtenl. Umgeg. Revals, Kazan, 1913. 



Apotheciis disco cervino-carneo vel Isele brunneolo, semper la;tiore 

 quam iu forma nuda, Elenk., plus minus (sed semper leviter) 

 pruinoso, rarius uudo. 



Spec. orig. (nunieros.) in herb, nieo Kazani. 

 Esthlandia: Reval. 



