MICROTHYRIACEAE 51 



Phaeosporae 



17:860 



Spores i-celled, dark, ovoid 

 I. Stroma subcarnose, discoid Coccodiscus 17:860 



Hyalodidymae 



17:860 

 Spores i-septate, hyaline, fusoid 



I. Stroma subcarnose or corneous, disciform-pulvinate 



Yoshinagaia 17:860 



Family 24. MICROTHYRIACEAE 



2:658, 9:1053, n:379. 14:686, 16:633, 17:861 

 Perithecia separate, or rarely in a stroma, dimidiate, applanate, context usually 

 beautifully radiate, subsuperficial, black, membranous or carbonous, perforate or 

 astomous ; asci 4-8-spored, usually short. 



Subfamily Microthyriae 



Perithecia typically not seated on a subicle 



Hyalosporae 



2:659, 9:1053, n:379, 14:686, 16:633, 17:861 

 Spores i-celled, hyaline, ovoid to oblong or fusiform 



I. Spores oblong, curved Piptostoma 9: 1054 



II. Spores elliptic to fusiform, straight 



1. Spores elliptic, short Myiocoprum 2:659 



2. Spores fusiform, long, sometimes i-septate 



Pemphidium 2:670 



Phaeosporae 



2:662, 9:1054, 16:634, 17:861 



Spores i-celled, dark, globose to oblong 



I. Spores globose ; perithecia on a hyaline subicle 



Blasdalea 16:634 



II. Spores oblong; subicle lacking Vizella 2:662 



Hyalodidymae 



2 : 662, 9 : 1055, 1 1 : 379, 14 : 687, 16 : 635, 17 : 862 



Spores i-septate, hyaline, oblong to fusoid 



I. Asci with paraphyses 



1. Perithecia with several ostioles Polystomella 9: 1063 



2. Perithecia astomous Clypeolum 2:667 



II. Asci without paraphyses 

 1. Perithecia smooth 



a. Perithecia more or less mytiliform and confluent 



Brefeldiella 9: 1063 



