276 Prof. Dr. C. Meresclikovsky's Diagnoses 



Gasparrinia murorum, forma albula, Mer. 



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

 1913. 



Thallo albulo vel hinc inde levissime flavescente. Ad saxa calcarea. 



Spec. orig. in herb, nieo Kazani. 

 E^thlandia : Reval. Germania. 



Forma pulvinuluyn, Mer. 



Thallus orbicularis, crassus, centre valde elevatus, piilvinulaa 

 formans, sporis angustis sunt in var. iemiispora, Mer. 



Over twenty good specimens of tliis form will be found in 

 my collections in Kazan, prepared for my * Tabulse Generutn 

 Lichenum.' 



Spec. orig. in herb, meo Kazani. 



Soemmering: Adlitzgraben (Austria), in rupibus calcareis. 



Growing at a short distance from var. tenuispora, into 

 wliich it gradually passes. 



Var. tenuispora, ]\ler. 



Thallus crassitudine configuratione, colore, etc., ut in typo speciei 

 sed sporis angustis, s^ibcylindricis, crassitudine circiter 0'004- 

 0-005 millim. (in typo 0-006-0-007 millim.). 



Over twenty good specimens of this variety will be found in 

 my collections in Kazan, prepared for my * Tabulae Generum 

 Lichenun).' 



Spec. orig. in herb, meo Kazani. 



Soemmering : Adlitzgraben (Austria), in ru])ibus calcareis. 



Var. suhfuloa, Mer. 



Meresclikovsky, ICoutrib. tl, lieh. d, 1. Crimea, Ann. d. .*c. nat. Bo» 

 tanique, 15.'21. 



Tliallus fulvo-aiirantiacus, centro vulgo pallidiore et ssepe partim 

 cinerascente ; apothecia iutensior coloratoe, saepe couvexa, ira- 

 marginata. Differentia minima, sed constantissima esse videtur. 



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

 Tabulge Gen. Lich., Oasj arrinia, i. no. 77 (exist, only in 

 Mus. hot, Acad, of Sc. of Petrograd and in the herb. Horti 

 Petropolitani). 



Esthlandia: Reval. Tauria. 



The observation of a great number of specimens of the type 

 (Eeval) and of the variety (Crimea) in natural conditions, 

 Komelimcs growing side hy side, has shoA\n the latter to be 



