KEY TO THE FAMILIES AND IMPOKTANT GENERA 253 



Apothecia somewhat obconical. 

 Ascospores one-celled. Conidial stage Gloeosporium-Mke. 



Drepanopeziza 

 Ascospores two-celled. Conidial stage Marssonina or Entommpor- 

 ium. Diplocarpon 



Apothecia developed on the living host tissues and also on the over- 

 wintered dead tissues, soft fleshy, with better developed stroma 

 for the overwintered apothecia. Conidial stage Sporonema or 

 Ramularia or wanting. Ascospore one-celled. 



Pseudopeziza 

 Apothecia superficial, attached to the woody substratum by a narrow stalk, 

 flat or saucer-shaped, soft fleshy, mostly bright-colored or 

 hyaline. Asci cyhndrical, small; ascospores 8, one-celled, 

 hyaline, small. Paraphyses swollen at the apex with a waxy 

 substance which unites them. Saprophytes. 



Family Orbiliaceae 

 (Nannfeldt recognizes three genera, Orbilia, Patinella, and Hyalinia.) 

 Apothecia superficial or rarely emerging from the substratum, short- or 

 long-stalked or sessile, soft, light-colored, often hairy exter- 

 nally, Ascospores oblong to needle-shaped, hyaline, one- to sev- 

 eral-celled. Paraphyses thread-like or lance-like. Saprophytes. 



Family Hyaloscyphaceae 

 Apothecia relatively large, almost sessile to long-stalked, mostly clothed 

 with long rough hairs. Paraphyses usually lance-like, longer 

 than the asci. Lachnum 



Apothecia small, sessile or tapered at base. Paraphyses not lance-like. 

 Hairs with enlarged base and tapering to a fine point. 



Hyaloscypha 

 (Nannfeldt recognizes some other small genera with small apothecia.) 



• Hypothecium and most of the epithecial tissues hyphal (not pseudoparen- 

 5 chymatous) . 



j Apothecia superficial or rarely breaking out of substratum, long- or short- 



stalked, rarely sessile, cartilaginous, leathery or fleshy, mostly 



• medium-sized or large, hght-colored or dark, asci clavate, 



ascospores oblong, hyaline or dark-colored, simple or septate. 



f Not rising from definite stromatic masses. 



Family Helotiaceae 



' Apothecia light-colored, fleshy, almost sessile to long-stalked, outer 



,'• surface of apothecia not hairy. Saprophytes. 



s Helotium 



i Apothecia similar, growing on wood, outer surface clothed with long, 



i cylindrical, and somewhat crisped hairs. Parasites or sapro- 



• phytes. 



Trichoscyphella 



(Dasyscijpha in part) 

 (Nannfeldt recognizes many other genera, some sessile, most stalked.) 

 Apothecia arising from a definite sclerotium or a stromatized portion of 

 the substratum, stipitate, asci cylindrical-clavate, 8-spored; 

 ascospores ellipsoid, hyahne (except two genera), smooth, one- 

 celled. Mostly parasitic. (Key to genera modified from Whetzel, 

 1945.) Family Sclerotiniaceae 



Stroma a sclerotium of more or less definite and characteristic form. 



