282 Piof. Dr. C. ]\Ieresclikovsky's Diagnoses 



Var. auguslata, forma nuda, Mer. 



Mereschkovsky, Schedulae ad Lich. ticin. exsiccatos, in Aunuaire du 

 Conservat. et Jard. bot. d. Geneve, vol. xxi. 1919, p. 192, 



Thallo fusco, nudo vel hinc inde leviter pruiuoso. 



Spec. ori(j. (1) in herb, meo K.-izani (iiumeros.), (2) in lierb. 

 Conservat. botan. Genevse, (3) in Meresclikovsky, Licli. ticin. 

 ex.«. no. 70. 



Hossia. Helvetia. 



Var. argypJuea, forma centrofusca^ Mer. 



Mereschkovsk}^, Schedulaj ad Licli. llobs. exa. Kazan, 1913 (no. 50) ; 

 Hedwigia, 1919, p. 230, 



Thallus albo-suffu6U3, centrum versus sordide griseo-fuscescens, 

 epruinosus, laciniis interdum leviter angustioribus ; apothecia ut 

 in var. argijphcea. 



Spec. orig. (I) iu herb, meo Kazani, (2) in Merescbkovsky, 

 Lich. Ross. exsicG. no. 50. 

 liossia Media (Kazan). 



Forma granulata, Mer. 



Meresclikovsky, Coutrib. fl. licli(5nol. envir. Kazan, Hedwigia, 1919, 

 p. 231. 



Thallus albo-pruinosus, granuloso-diffractus, laciniis periphericis vix 

 ullis vel brevissioiis. 



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

 Conservat. botan. Genevee. 

 Rossia. Helvetia. 



Var, imhricata, forma yiiicroj^hyllina, Mer. 

 Meresclikovsky, I. c. 

 Laciniis brevioribus angustioribusque, minus quam 1 millim. latis. 



Spec. orig. in herb, meo Kazani. 

 Rossia Media (Kazan). 



Var. rufescens, Mer. 

 Meresclikovsky, I. c. 

 Thallus brunneus, fuscus vel rufo-fuscus ; apothecia disco plus 

 minuBve pruinoso, marginibus thallinis destitutis in quid a var. 

 venusta differt. Forsan est melius forma cousidereuda. 



Spec. orig. (numeros.) in herb, meo Kazani. 

 Rossia Media (Kazan). 



