354 CLASS ASCOMYCETEAE 



Appendages more or less stiff, dichotomously forked at tip. 



Microsphaera 



Appendages hooked or coiled at tip. 



Mycelium entirely external, conidiophores straight. Uncinula 



Mycelium internal as well as external, conidiophores with spirally twisted 

 base. Uncinulopsis 



Appendages with swollen base, straight and pointed, mycelium external and 



in substomatal chambers. Phyllactinia 



Appendages wanting, surface of perithecium without gelatinous cells. 



Brasiliomyces 

 (Viegas, 1944) 

 True equatorial appendages wanting, on upper surface of perithecium numer- 

 ous gelatinous penicillate cells. Typhulochaete 

 Ascospores two-celled. 



Appendages hypha-like. Chileniyces 



Appendages dichotomously forked at tip. Schistodes 



Appendages lacking, mycelium and spores cinnamon-yellow. Astomella 

 Ascospores four-celled, appendages hypha-like. Leucoconis 



Key to the Commoner Genera of Family Meliolaceae 



Perithecia or mycelium intramatrical. 



Perithecia subepidermal, asci many-spored, spores hyaline, two-celled. 



Pampolysporium 



Perithecia extramatrical, hyaline, mycelium in the epidermis but breaking out 



as a superficial dark mass. Spores two-celled, brown, perithecia scattered. 



Alina 

 Perithecia and dark mycelium external but emerging in strands through the 

 stomata. 

 Perithecia on peg-like strands from the stomata. Stomatogene 



Mycelium superficial but penetrating the stomata in narrow bundles. Perithecia 

 on short mycelial branches. Piline 



Perithecia and mycelium entirely external. 



Mycelium with hyphopodia but no bristles. Irene^ 



Mycelium with hyphopodia and bristles. Meliola 



Mycelium without hyphopodia. 



With bristles, spores brown, two-celled. Phaeodimeriella 



With bristles, spores brown, four- to five-celled. Meliolina 



Without bristles, spores hyaline, two-celled Dinierina 



Without bristles, spores brown, two-celled, perithecium rust-colored. 



Parodiopsis 

 Without bristles, spores brown, two-celled, perithecium black. 



Dimerium 



Key to the Commoner Genera of Family Englerulaceae 



{Based on Theissen and Sydow, 1917, but see Petrak, 1928) 



Perithecial walls of rounded, soft cells, deliquescing into slime in which these cells 

 are scattered. 



» Stevens (1927) segregates Irenopsis and Irenina from the genus Irene on some 

 minor characters, and also includes in this family (Meliolaceae) Adinodothis and 

 Amazonia which are placed by Theissen and Sydow in Order Hemisphaeriales. 



