Acta Societatis pro Fauna et Flora Fennica, 49, N:o 2. 251 



4. Th. pyrenophorum (Ach.) Th. Fr. Sporae long. O.022 — O.026 

 mm. 125. 



AA Perithecia apice convexo. 



5. Th. aethloboloides (Nyl.) Vain. Thallus dispersus, obscure 

 cinereus. Sporae long. O.on — O.022 mm. 126. 



6. Th. olivaceonitens Vain. Thallus continuus, olivaceus. Sporae 

 long. O.ou — O.018 mm. 127. 



OO Perithecium integre fuligineum. 

 -X- Nucleus jodo reagens. Saxicolae. 

 X Perithecium apice haud impresso. 



7. Th. incinctum Vain. Thallus linea obscurata limitatus. 127. 



8. Th. immcrsum (Leight.) Mudd. Thallus haud obscure limita- 

 tus. 128. 



X X Perithecium apice impresso. 



9. Th. submethorium (Vain.) Zschacke. Thallus olivaceo- aut 

 cinereo-fuscescens. 129. 



-X--)f Nucleus jodo non reagens. Terricola. 



10. Th. velutinum (Bernh.) Koerb. Sporae diu simplices, demum 

 1-septatae. 130. 



2. Bertia De Not. 



Gonidiis destitutae. Mycelium nigricans. Perithecium 

 demum corrugatum, fuligineum, integrum. Nucleus jodo 

 non reagens. Sporae decolores, elongatae oblongaeve, 

 vulgo 1 — pluri-septatae. 



1. B. lichenicola De Not. Parasita Solorinae croceae. 131. 



3. Pharcidia Koerb. 



Parasitae lichenum, gonidiis destitutae. Perithecium 

 laevigatum. Sporae decolores, vulgo ovoideo-oblongae, 

 1-septatae. 132. 



1°. Mycelium decoloratum, parum evolutum. 

 a. Perithecium integre fuligineum. 

 f. Nucleus jodo non reagens. 



O Perithecium minutissimum, lat. O.oso — O.100 

 mm. 

 X Sporae breviores, long. O.010 — O.015 mm. 

 A Sporae crassiores, crass. O.005 — O.ooe 

 mm. 



