40 VERRUCARIACEAE 



(m) Spores i -celled 

 r. Spores hyaline Thrombium 57 



s. Spores dark *Phaeothrombis 57 



(n) Spores septate 

 r. Spores elliptic, 3-few-septate 



Geisleria 57 

 s. Spores muriform 



(r) Spores hyaline Microglaena 57 



(s) Spores dark *Phaeoglaena 57 



t. Spores needle-shaped, many-celled 



Gongylia 57 

 n. Ostiole margined by a broad disk 



(m) Spores transeptate Aspidopyrenium 58 



(n) Spores muriform Aspidothelium 58 



(c) Algae Chroolepus 

 X. Perithecia upright, with vertical ostiole 



Subfamily Pyrenulae 62 

 (x) Paraphyses free, simple 

 m. Perithecia smooth 



(m) Spores l-celled, colorless 



Coccotrema 66 

 (n) Spores septate 

 r. Asci 4-8-spored 

 (r) Asci persistent 

 h. Spores transeptate 

 (h) Spores hyaline 

 +. Spores i-septate 



( + ) Spore cells separating 



*Dichoporis 66 

 ( — ) Spore cells not separating 

 *Diporina 66 

 — . Spores 2-many-septate 



Porina 66 

 (i) Spores dark 

 + Spores i-septate 



*Dipyrenis 68 

 — . Spores several-septate 



Pyrenula 67 

 (incl. Blastodestnia 67) 

 i. Spores muriform 



(h) Spores hyaline Clathroporina 67 

 (i) Spores brown Anthracothecium 68 

 (s) Asci evanescent; spores acicular, clear 

 Belonia 67 

 s. Asci many-spored; spores septate, clear 

 (r) Spores i-celled *Holothelis 67 



(s) Spores septate 



h. Spores i-septate *Dithelopsis 67 



