268 Prof. Dr. C. Meresclikovsky's Diagnoses 



Var. incisa^ Mer. 



Mereschkovsky, /. c. (cum fig.). 



Apotheciis minoribus, immersis, crateriformibus, margine tballino 

 acuto, inciso, saepe fere totum diacum obtecto. Forsan potius 

 species peculiaris sit. Saxicola. 



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

 Tabuloe Gen. Lich. Kazan, 1913, Aspicilia, i. {Sp/uerothallia) 

 no. 4. 



Gubernia Astrachan. Asia Media. 



Var. nigrescens, Mer. 

 Mereschkovsky, I. c. (cum fig.). 



Thallus crustaceus, effusus, crassus, e tuberculis mastoideis, 

 2-3 millim. (vel phis) longis, circiter 1-2 millim. latis, confertis, 

 contextus ; nigresceas vel olivaceo-nigresceus, cyphellis albidis 

 orndtus. Sterilis. In rupibus arenaceis. 



Spec. orig. in herb, meo Kazani. 

 Gubernia Astrachan. 



Var. semivaganSy Mer. 

 Mereschkovsky, I. c. (cum fig.). 



Thallus pro parte crustaceus, pro part© glebulos minutes forraans 

 statu libero viventes. Areolae thaUi sat sirailis species sed super- 

 ficia pauUo nitidiusculo et cyphellis magis immersis. 



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

 Tabulse Gen. Licii., Aspicilia, i. no. 5. 



Aspicilia duhia, Mer., var. microphyllina, Mer. 



Mereschkovsky, Addit. ad Lichenogr. Ross, i., inOesterr. Bot. Zeitschr. 

 19:^1. 



Tuberculis thalli miuutis. 



Spec. orig. in Mereschkovsky, Tabula? Gen. Lich. Kazan, 

 1913, Aspicilia^ i. [SphcerothalUa) no. 16 (e Tian-Schan). 



The type of tiie species is represented in my ' Tabulae 

 Generum Lichenorum ' by no. 15. The var. microphyllina 

 (no. 16) has the tubtrculas one-half or one-third the size of 

 those in the type. 



Aspicilia esculenta, forma retiisa, Mer. 



Thallo minore, vulgo 10 millim. (8-15 millim.) lato, sordide griseo- 

 albescente, squamulis minoribus, minus prominulis, retusis, 



