70 



SPHAERIALES 



(x) Stroma valsoid Valsaria 1:741; 12 



(y) Stroma eutypoid Endoxylina 11:318 



(b) Paraphyses lacking Melanconiella 1:740 



b. Stroma erect, subteretc, simple or branched Xylobotryum 11:319, 14:20 



Hyalophragmiae 

 2:152, 9:824, 11:332, 14:381, 16:528, 17:692, 22:189, 300, 24:767, 948, 1075 



Spores x-cclled, hyaline to subhyaline, oblong, cylindric, or fusiform. The 

 ratio between length and width is less than 20:1; in a few genera of this section 

 the spores are typical in form, but merely 1-scptate or even continuous. 



A. Perithecia separate, sometimes gregarious but 

 rarely cespitose 



1. Perithecia innate, or finally crumpent 



a. Perithecia beaked 



(1) Perithecia carbonous, lignicole; paraph- 



yses present 



(2) Perithecia membranous, folicole; paraph- 



yses lacking 



b. Perithecia not beaked 



(1) Perithecia with a clypcus 



(a) Paraphyses present 



(b) Paraphyses lacking 



(2) Perithecia without clypeus 



(a) Perithecia hairy 



(b) Perithecia glabrous 

 X. Paraphyses present 



(x) Spores with a mucous sheath 

 (y) Spores without a mucous sheath 

 m. Perithecia membranous 



(m) Perithecia on spermaphytes 

 r. Spores with a seta at each end 

 s. Spores without setae 

 (n) Perithecia on thallophytes 

 r. Perithecia lichenicole 

 s. Perithecia uredicole 

 t. Perithecia fucicole 

 n. Perithecia carbonous 



(m) Spores with a seta at each end, 



very long, 20-30-septate 

 (n) Spores without setae, few-septate 

 r. Perithecia warted or ridged 

 s. Perithecia not warted or ridged 

 y. Paraphysoids present 

 (x) Spores with a mucous sheath 

 (y) Spores without mucous sheath 

 2. Paraphyses and paraphysoids lacking 



2. Perithecia superficial from the first 

 a. Perithecia hairy or setose 



(1) Perithecia membranous 



(a) Paraphyses present 



(b) Paraphyses lacking 



Ceratosphaeria 2:227; 12 

 Cryptoderis 2:229, 17:716 



Clypeothecium 

 Hypospila 2:189 



Chaetopyrenis 24:961 



Massarina 2:153 



Keissleria 2:184, 14:19 

 Metasphaeria 2:156; 12 



Pharcidiopsis 17:646 

 Eudarluca 22:201 

 Lulworthia 24:1059 



Saccardoella 2:190 



Bertiella 

 Melomastia 2:213 



Pseudosphaeria 22:407 

 Phragmosperma 24:1131 

 Sphaerulina 2:186 



Aphanostigme 

 Acanthostigma 2:207 



