of some Lichens. 261 



Yi\Y. fuscornfa, Mer., forma convexiuscul i, Mer. 



Mereschkovsky, /. c. 



Thallus cinereus, minute granulosus ; apothecia sparsa, minora 

 quam in typo, circiter ut in forma virella hujus varietatis, disco 

 convexiusculo vel convexo, testaceo-rufescente vel fusco-rufo vel 

 fusco, nudo, margine tenui vel tenuissimo vel demum subevan- 

 escente, integro vel saepius plus minus minute crenulato. Unacum 

 varietate fuscomfa. 



Spec. orig. (1) in herb. Coiiservat. botan. Grenevaj (vide 

 Tabulam Lecanorce coHocarpce), (2) in lierb. Brit. Mus., (3) in 

 herb. Parisii (Museum), (4) in herb. Univ. Upsala?, (5) in 

 lierb. Harv. Univ. Cambritlge (U.S.A.). 



Lugano (Helvetia italica). 



Forma suhpruinosa, Mer. 

 Mereschkovsky, /. c. 

 Apothecia pauUum majora, discreta, regulariter orbicularia, disco 

 fusco, leviter subpruinoso, convexiusculo. Differt a Lecanora 

 atrynea, in Norrl. et Nyl. Herb. Lich. Eenn. no. 132, apotheciia 

 haud planis vel concavis, ut in atrynea, sed couvexiusculis. 



Spec. orig. in herb. Conservat. botan. Geneva3 (vide Tabuham 

 Lecanorce coilocarpce). 



Lugano (Helvetia italica), 



Lecanora crenulatissima, Mer. 



Mereschkovsky, Excurs. lichenol. dans les steppes Kirghises (Mout 

 Bogdo) ; Troudy (Travaux) d. 1. Soc. des Natur. d. TUuiv. d. Kazan, 

 Aim6e 1911. 

 Thallus albineus, mediocris, subgranulatus ; apothecia mediocria, 



orbicularia, disco nigro, nudo, margine albido, granulato-crenu- 



latissimo, crenulis minutis, numerosis, moniliformibus, vaide 



regulariter dispositis. Ad saxa arenacea. 



Spec. orig. in herb, meo Kazani. 

 Guberuia Astraclian ; Tauria. 



Forma pezizoidea, Mer. 



Mereschkovsky, Addit. ad lichenogr. Rossise, i., Oesterr. Botan. Zeitschr. 

 1921. 

 Margine thallode apotheciorum ut in forma typica at apotheciis 

 majoribus, usque ad 3-4 millim. latis, cupuliformibus, disco atro, 

 nudo. Ad saxa arenacea. 



Spec. orig. in herb, meo Kazani. 

 Kossia, gubern. Astrachan. 



