154 STILBACEAE 



3. Conidia catenate 



a. Hyphae velvety, erect, subsimple ; conidia caudate 



Alternaria 4: 545 



b. Hyphae crustose, various; conidia 2-celled; conidia-like ganglia sarciniform 



Fumago 4:547 

 II. Conidia of two forms, dark sarciniform and subhyaline falcate 



Sarcinella 4: 548 



Staurosporae 



4: 55_'. 11 1639, 14: 1 1 07, 16: 1 181. 18:625 



Conidia forked or stellate, usually dark, septate or continuous 



I. Conidia of two forms, small fusoid hyaline, large lobate many-celled, brown 



Desmidiospora 10:568 



II. Conidia alike 



1. Fertile hyphae present; conidia 3-4-radiate 



Triposporium 4:554 



2. Fertile hyphae lacking 



a. Conidia on a cellular stroma, 2-4-digitate 



Chiromyces 4: 554 



b. Cellmar stroma lacking 



(1) Conidia 3-several-radiate ; xylogenous 



Ceratosporium 4: 552 



(2) Conidia 2-radiate; phyllogenous Hirudinaria 4:553 



Scolecosporae 

 Conidia long-filiform or vermicular 

 One genus Cercospora 4: 431, 14: 1099 



Helicosporae 

 4:557, 10:680, 11:638, 14:1107, 16:1081, 18:624 



Conidia cylindric, spiral or convolute, typically septate, dark or hyaline 



I. Hyphae obsolete Helicopsis 10: 680 



II. Hyphae present 



1. Conidia septate transversely Helicosporium 4: 557 



2. Conidia muriform Helicoma 11:638 



Family 77. STILBACEAE 



Sterile hyphae creeping, scanty; fertile hyphae collected into stalk-like or stroma- 

 like fascicles bearing conidia at the top, more rarely along the side, pale, bright- 

 colored or dark. 



Hyalostilbae 

 Hyphae and conidia pale or bright-colored, not dark or black 



Amerosporae 

 4:561, 10:681, 11:640, 14:1107, 16:1082, 18:630 



Conidia globose, elliptic or oblong, 1 -celled, hyaline or pale, or bright-colored 

 I. Conidial part distinctly capitate or at least terminal 



