26-i Prof. Dr. C. Meresclikovsky's Diagnoses 



minusve convexis in vicino apotheciorum dispositis compositns, 

 vulgo obsolehus vel invisibilis, albicans vel griseo-albicans, opacus. 

 Reactione KOH-, CaClO,-, KOH(CaCl,0^)-, H,0-. Apo- 

 thecia vulgo media vel majuscula, latitudine valde variabili, 0-3- 

 3*7 raillim. lata, vulgo 1-2 millira. lata, numerosissima, conferta, 

 mutuo pressione irregulares, flexuosa, valde elevata, basin versus 

 coustricta, baud arete adfixa et turn facile cadescentes, margine 

 tballo con colore, mediocri, integro vel leviter irregulariterque 

 creimlato, disco sordide brunneolo, pruinoso. Parapbyses tenues, 

 iiliformes, baud articulate, arete cobaerentes. Spone 8nae, sim- 

 ])lices, ellipsoidese vel ovoideo-ellipsoideoe, lougitudine 0-0110- 

 0-01 3S millim., crassitudiue 0-004S-0-0072 millim. (usque ad 

 0-0164 millim. longit. et 0-0096 millim. crassit.). 



Spec. orig. (1) in herb, meo Kaziiii, (2) in Meresehkovsky, 

 Ijich, Ross.' exs. no. 9, (3) in ejusdein Tab. Gen. Lii^li. no. 21. 



Rossia Media; E>thonia ; Fennia; Tauria. Etiani in 

 Angli'i, Gallia, Germania et Austria occurrit. 



Forma delicnta^ Mer. 



Merescbkovskv, Nachtr. z. Flechteul. a. d. Umgeg. Revals, Kazan, 

 1913. 



Apotbeciis minoribus, magis applanatis regulariterque rotundatis, 

 baud flexuosis, basin versus minus constrictis. Ad muros cal- 

 careos et cementum earum. 



Spec. orig. (1) in lierb. meo Kazani, (2) in Meresehkovsky, 

 Tabulse Generum Licb. Kazan, 1913, Lecanora, i. no. 20 

 (e Reval). 



Esthlandia : Reval. Gallia : Docelles (Vosges). 



Var. grisea, Mer. 



Meresehkovsky, Nachtr. z. Flechtenl. a. d. Umgeg. Eevals, Kazan, 

 1913 (sub Lecanora crenulafa, var.). 



Colore griseo tbaUi et marginis apotbeciorum constanter a typo 

 differt. Ad saxa calcarea. 



Spec. orig. (1) in lierb. meo Kazani, (2) in Meresehkovsky, 

 Licb. Ross. exs. no. 10, (3) in ejusdem Tabula3 G^n. Licb. 

 Kazan, 1913, Lecanora^ i. no. 22 (e Reval). 



Esthlandia : Reval. 



Var. tcasmuthi, Mer. 



Merescbkovskv, Excurs. lich^nol. dans les steppes Kirghises (Mont 

 Boo^do), Kazan, 1911 (sub Lecanora wusmuthi, Mer.). 



Colore tballi et apotbeciorum sordide lutescente-brunneolo con- 

 stanter a forma typica differt. Tballus KOH et CaCl,0^ + . 



