Acta Societatis pro Fauna et Flora Fennica, 49, N:o 2. 247 



Paraphyses in gelatinam diffluxae. Sporae murales. Apo- 

 thecia gonidiis hymenialibus instructa. 87. 



a. Gonidia hymenialia globosa. 

 t Sporae obscuratae. 

 O Thallus laevigatus. 



1. St. fissa (Tayl.) Th. Fr. Apothecia amphithecio thallino ob- 

 ducta, apice denudato nigroque. Gonidia hymenialia diam. O.003 — O.005 

 mm. 88. 



3. St. elegans (Wallr.) Zwackh. Apothecia demum apice late 

 denudato nigroque. Gonidia hymenialia vulgo diam. O.002 — O.0025, rarius 

 p. p. O.003 — O.004 mm. 91. 



OO Thallus inaequalis. 



4. St. frustulenta Vain. Thallus verrucis convexis vel depresso- 

 convexis. 93. 



ft Sporae decolores. 



2. St. inconversa (Nyl.). 90. 



/?. Gonidia hymenialia saltern partim ellipsoidea 

 oblongave. 



5. St. clopirna (Ach.) Th. Fr. Gonidia hymenialia ellipsoidea 

 oblongave. Verrucae apotheciorum medio nee foveolatae nee de- 

 pressae. 94. 



6. St. turgidella (Nyl.) Vain. Gonidia hymenialia p. p. globosa, 

 p. p. ellipsoidea oblongave. Verrucae apotheciorum medio vulgo de- 

 pressae foveolataeve. 95. 



2. Polyblastia (Mass.) Lonnr. 



Thallus crustaceus, gonidia pleurococcoidea continens. 

 Paraphyses in gelatinam diffluxae. Sporae murales aut 

 submurales. Apothecia gonidiis hymenialibus nullis. 97. 



Stirps 1. Sporodictyon (Mass.) Vain. Sporae obscu- 

 ratae. 97. 



1. P. Henscheliana (Koerb.) Lonnr. Verrucae apotheciorum 

 amphithecio thallino obducta, vertice denudato nigroque. 97. 



2. P. scotinospora (Nyl.) Hellb. Verrucae apotheciorum nuda 

 nigraque. 98. 



Stirps 2. Hyalospora Zschacke. Sporae decolores aut 

 demum pallidae. 99. 



1°. Sporae murales, cellulis numerosis. 



