252 E. A. Vainio, Pyrenocarpeae. 



1. Ph. rhyparella (Nyl.) Zopf. Sporae long. O.on — O.ou mm. 

 Perithecium lat. O.cmo — O.090 mm. 132. 



AA Sporae tenuiores, crass. O.003 — O.005 mm. 



2. Ph. Schaereri (Mass.) Arn. Sporae subovoideo-oblongae, long. 

 O.010 — O.012, crass. O.003 — O.005 mm. Perithecium lat. O.050 — 0.065 mm. Asci 

 apice minus attenuato. 133. 



4. Ph. coniodes (Nyl.) Sacc. Sporae ovoideae aut ovoideo- 

 oblongae, long. O.010 — O.015, crass. O.003 — 005 mm. Perithecium lat. O.oso — 

 O.080 mm. Asci apice magis attenuato. 134. 



X X Sporae longiores, long. O.ou — O.016 mm. 



3. Ph. rhexoblepharae (Vain.) Sacc. Sporae crass. O.0045 — O.oosmm. 

 Perithecium lat. O.i mm. 134. 



OO Perithecium lat. usque ad O.iso mm. 



5. Ph. Diaboli Vain. Sporae long. O.009 — O.013, crass. O.005 mm. 

 135. 



ft Nucleus apothecii jodo reagens. 



6. Ph. haesitans (Nyl.) Vouaux. Sporae long. O.ou — O.on, crass. 

 O.006 O.007 mm. 136. 



/?. Perithecium basi decoloratum. 



7. Ph. epicymatia (Wallr.) Wint. Sporae long. O.on— O.oh, crass. 

 O.003 mm. 137. 



2°. Mycelium hyphis fusconigris. 



8. Ph. rhizophora Vain. Sporae long. O.013 — O.ou, crass. O.00& 

 mm. 137. 



Subtrib. 9. Pyrenuleae (Mull. Arg.) Vain. 



Thallus crustaceus et gonidia continens aut e mycelio 

 gonidiis destituto constans. Paraphyses evolutae. Sporae 

 obscuratae, septis transversis divisae. 138. 



1°. Thallus gonidia continens. 



[Pyrenula. Sporae septis 3 — pluribus, loculis lenticularibus. 138.] 



4. Microthelia. Sporae 1-septatae. 144 (253). 



2°. Thallus e mycelio gonidiis destituto constans. 

 a. Sporae septis 3 aut pluribus. 

 f Sporae loculis lenticularibus. 



1. Mycopyrenula. Corticolae. 139 (253). 



ft Sporae loculis haud lenticularibus (subcylin- 

 dricis). 



2. Xenosphaeria. Parasitae lichenum. 140 (253). 



3. Leptosphaeria. Corticolae. 143 (253). 



