^2 ERYSIBACEAE— PERISPORIACEAE 



II. Perithecium with several asci 



1. Appendages present 



a. Appendages simple, thread-like Erysibe i: 15 



h. Appendages branched or otherwise modified 



(i) Appendages dichotomously branched 



Microsphaera 1:10 



(2) Appendages modified but not branched 



(a) Appendages stiff and bristle-like 



X. Appendages numerous, not swollen at base 



Pleochaete i: g 

 y. Appendages few, swollen at base 



Phyllactinia i: 5 



(b) Appendages coiled at tip Uncinula 1:6 



2. Appendages absent; perithecium surrounded by the mycelium 



Erysibella i : 23 



Dictyosporae 



Spores usually hyaline, muriform 

 A single genus Saccardia i: 24 



Family 16. PERISPORIACEAE 



I : 24, 9 : 371, II : 253, 14 : 462, 16 : 398, 17 : 524 

 Mycelium superficial, dark, filamentous, sometimes lacking, rarely forming a firm 

 stroma ; conidia or pycnidia rarely present ; perithecium without a mouth, or open- 

 ing irregularly, usually globose, membranous or coriaceous, rarely carbonous, appen- 

 dages usually lacking ; asci mostly numerous, clustered, more or less cylindric, mostly 

 8-spored, paraphyses regularly lacking ; spores various. 



Hyalosporae 



Spores i-celled, hyaline or yellowish 



I. Perithecia bright-colored, yellow or reddish, rarely white 



1. Asci 8-spored 



a. Perithecia with setae, or hairs 



(i) With long rigid setae Chaetothece 11:254 



(2) With many hairs, immersed in a dense subicle 



Cryptothecium 14:465 



b. Perithecia glabrous 



(i) Spores with an unequal samariform appendage 



Samarospora 11 : 254 

 (2) Spores not appendaged 



(a) Spores verrucose Anixiopsis 14: 464 



(b) Spores smooth 



X. Conidiophores branched Allescheria 14: 464 



y. Conidiophores simple, swollen at tip 



Eurotium i : 25 



(Kickxella 9: 372) 



2. Asci many-spored Pisomyxa i: 29 



II. Perithecia dark or black, spores hyaline 

 I. Asci 2-8-spored 



