264 Prof. Dr. C. Meresclikovsky's Diagnoses 



minusve convexis in vicino apotheciorum dispositis corapositus, 

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

 lieactione KOH-, CaClA-, KOH(CaCl,Oj-, H^O-. Apo- 

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

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

 mutuo pressione irregulares, flexuosa, valde elevata, basin versus 

 C'onstricta, haud arete adfixa et turn facile cadescentes, margine 

 thallo concolore, mediocri, integro vel leviter irregulariter(]ue 

 creiHilato, disco sordide brunneolo, pruinoso. Paraplaj'ses tenues, 

 iiliforraes, haud articulatae, arete cohaerentes. Sporte 8nae, sim- 

 l)lices, ellipsoideae vel ovoideo-ellipsoideiie, lougitudine 0-01 K*- 

 0-0138 millim., crassitudino 0-0048-0-0072 millim, (usque ad 

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



Spec. of'f/. (1) in lierl). inco Krizani, (2) in Mereselikovsk v, 

 L'cli. lioss. exs, no. 9, (3) in ejusdeni Tab. Grt^n. Lidi. no. 21. 



Russia Media ; E4lionia ; Fennia; Tauria. Eliani in 

 Aii<'li^i, Galli;i. Germania efc Austria occurrit. 



Forma delicita, Mer. 



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

 1913. 



Apotbeciis minoribus, magis applanatis regulariterque rotuudatis, 

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

 careos et cementum earum. 



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

 Tabular Generum Lich. Kazan, l'J13, Lecanora, i. no. 20 

 (e Reval). 



Esthlaudia : Reval. Gallia : Docelles (Vo.sges). 



Var. grisea, Mer. 



Mereschkovsky, Nachtr. z. Flechtenl. a. d. Umgeg. Revals, Kazan, 

 1913 (sub Lecanura cremilata, var.). 



Colore griseo thalli et marginis apotheciorum constauter a typo 

 differt. Ad saxa calcarea. 



Spec. orig. (1) in herb, meo Kazani, (2) in Mereachkov.skj, 

 Jjich. Rosp. fX'?. no. 10, (3) in ejusdeni Tabular G>n. Lich. 

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



Estlihindia : Reval. 



Var. u-asmiithi, Mer. 



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

 Boo'do), Kazan, 1911 (sub Lecanora wasmuthi, Mer.). 



Colore thalli et apotheciorum sordide lutescente-brunneolo con- 

 stanter a forma typica differt. Thallus KOH et CaCl^(3^-f- . 



