oj some Lichens. 281 



margine integro. Ad corticem Igevigatam pro3cipiie tilife (eliam 

 populi juven.). 



Spec, ort'y. (niimerosissiin,) in herb, meo KazaJii. 

 liossia Media (Kazan). 



Pkijscia pidv^ndenta, forma granulusay Mer. 

 Meresclikovsky, /. c. p. 227. 



Thallus epruinosus, griseus vel subglaiicescente- vel olivasceiite- 

 griseus, lobis latis concretisque ut in typo, superne granulis 

 elevatis nudis plus minusve numerosis obtectus ; apothecia vulgo 

 passim parce foliolis thalliais muuito. 



Spec. orig. (iiumerosissini.) in lierb. meo Kazaiii. 

 B,ossia Media (Kazan). Estlilandia. 



Subforma fruticalosa, Mer. 

 Mereschkovsky, I. c. p. 228. 



Thallus erectus vel subdecumbens, fruticulosus, e ramulis elongatis, 

 teretiusculis, pro parte e grauulis evolutis, laxe subramosis, con- 

 sistens ; lobis adpressis quasi destitutus. In rimis corticis 

 arborum frondosarum, locis umbrosis. 



Spec. orig. ibidem. 

 Rossia Media (Kazan). 



Forma rugosa, Mer. 

 Mereschkovsky, I. c. p. 229. 



Thallus colore et forma laciuiarum ut in typo vel interdum sub- 

 fuscesceus vel cervino- vel cinereo-olivaceo-rufescens vel cineieo- 

 subfuscesceus, leviter pruinosus vel nudus ; apothecia margine 

 crasso, irregulariter rugoso- vel grauuloso-crenulato. 



Spec. orig. (numerosissim.) (1) ibidem, (2) in herb. Con- 

 servat. botan. Genevge (specim. a me determin.). 

 Rossia Media (Kazan). Helvetia. 



Forma venustoides, Mer. 



Mereschkovsky, Nachtrag z. Flechtenliste a. d. Umgeg. Revals, Kazan, 

 1913. 



Thallus nudus, brunneo-rufescens vel rufescens vel cinereo-brunneus, 

 laciniis latis concretisque ut iu typo ; apothecia margine integro 

 ut iu typo, sed foliolis thallinis passim parce ornato. 



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

 Rossia Media (Kazan). Esthlaudia. 



