AIYRIANGIACEAE 



93 



1. Ascoma with an epithecial shield composed of 



one layer of brown polygonal cells 



2. Ascoma without epithecial shield 



B. Ascoma erumpent to superficial, with differenti- 

 ated periderm as a rule 

 1. Asci separated by stromatic tissue 

 a. Asci in several irregular layers 



(1) Ascoma homogeneous, covered with a 



hard black slime; spores x-celled, hyaline 



(2) Ascoma differentiated externally, not slimy 



(a) Spores 2-celled, brown 



(b) Spores x-celled 

 X. Spores hyaline 

 y. Spores dark 



(c) Spores muriform 



X. Spores hyaline or subhyaline 

 (x) Ascoma uniformly fertile within, no 



definite hymenial tissue 

 (y) Hymenial tissue locally developed, 



distinct from the sterile base 

 m, Ascoma with central innate foot, 



margined by a radiate subicle 

 n. Ascoma without innate foot and subi- 

 cle 

 y. Spores dark 

 (x) Ascoma fleshy and colored, globoid 

 (y) Ascoma membranous, dark, discoid 

 b. Asci in a single hymenium-like layer 



(1) Spores 2-celled 



(a) Spores hyaline 



(b) Spores dark 



(2) Spores x-celled, hyaline 



(3) Spores muriform 



(a) Spores hyaline; subicle more or less evi- 



dent 

 X. Ascoma hairy 

 y. Ascoma glabrous 



(b) Spores dark 



X. Ascoma hairy, with subicle 

 y. Ascoma glabrous 

 (x) Subicle present 

 (y) Subicle lacking 

 2. Asci separated by paraphysoids or paraphysis- 

 like threads 

 a. Asci one to few, ovoid 



(1) Ascus single; ascoma arising in a stoma 



(2) Asci several; ascoma not arising in a 



stoma 



(a) Spores 2-celled, hyaline, without mucosa 



sheath 



(b) Spores x-celled, hyaline, with mucose 



sheath 



Plectodiscella 24:1140; 20 

 Elsinoe 16:804 



Subfamily Myriangiae 



Myxomyriangis 24:1138, 

 TS 438; 20 



Butleria 24:1134, TS 440 



Ascostratum 22:1135, TS 441 

 Kusanoa 16:800, TS 440; 20 



Ascomycetella 8:846, TS 440 



Angatia 24:1137, TS 439 



Myriangium 16:800, TS 439; 20 



Myriangina 11:364, 22:579; 20 

 Cookella 1:71, 22:585 

 Subfamily Saccardiae 



Leptophyma 8:844, 22:585 



AUosoma 



Eurytheca 8:846,22:579 



Saccardia 1:24, 22:583 

 Calolepis 



Calopeziza 24:1216, TS 442 



Dictyonella 22:583, TS 442; 20 

 Anhellia 22:579, TS 442 



Subfamily Dothiorae 



Monascostroma 22:1131 



Wettsteinina 22:406; 20 



Pseudosphaeria 22:407 



