PERISPORIACEAE 53 



a. Appendages dichotomous at tip Microsphaera 1:10; 7 



b. Appendages modified but not branched 



(1) Appendages lance-like, swollen at base Phyllactinia 1:5; 7 



(2) Appendages coiled at tip Uncinula 1:6; 7 



Hyalodidymae 

 Spores 2-celled, hyaline or light-colored 



A. Appendages simple or branched, thread-like Chilomyces 22:33 



B. Appendages dichotomous at tip Schistodes TS 456 



Hyalophragmiae 

 Spores x-celled, hyaline or light-colored 



Appendages simple, thread-like; asci several, 



x-spored Leucoconis TS 456 



Family 21. PERISPORIACEAE 



1:24, 9:371, 11:253, 14:462, 16:398, 17:524. 22:19, 24:222; L 333; TS 447 



Mycelium or subiculum superficial, rarely beneath cuticle or epiderm or tilling 

 the stomata, septate, not constricted or dematioid, with or without hyphopodia or 

 spines; perithecia regularly on the mycelium, without ostiole, wall parenchymic 

 and membranous of one or two layers of polygonal cells, or sometimes firmer and 

 x-layered, rarely carbonous, appendages present or lacking; asci regularly several 

 to many, globoid to clavate, rarely cylindric, few-, rarely many-spored, borne in an 

 umbellate basal cluster; paraphyses regularly lacking; spores various. 



Hyalosporae 

 Spores 1-celled, hyaline or subhyaline 



A. Spores globose; mycelium without hyphopodia Meliolidium 



B. Spores ellipsoid; mycelium with hyphopodia Clistosphaera 24:236, TS 461 



Phaeosporae 

 Spores 1-celled, dark 



A. Mycelium superficial, copious; asci clavate 



1. Paraphysoids present; ostiole more or less dis- 

 tinct Episoma 24:241 



2. Paraphysoids absent; ostiole lacking; hyphae 



with star-like setae Teratonema 24:241, TS 463 



B. Mycelium merely hyphae in hymenium of host; 



asci globose to ovoid; fungicole Guttularia 24:240 



Hyalodidymae 



Spores 2-celIed, hyaline 



A. Perithecia or mycelium innate 



1. Perithecia hairy, on a subcuticular or erumpent 



stroma; asci few-spored Chevalieropsis 22:391 



2. Perithecia glabrous, subepidermal; asci many- Pampolysporium 16:411, TS 



spored ^^60 



B. Perithecia and mycelium superficial 



1. Mycelium and perithecia with setae; perithecia 



opening irregularly at tip Rhizalia 24:364, TS 463 



2. Mycelium without setae; perithecia astomous 



