DEMATIACEAE 



a Hyphae dichotomous and broadened at apex 



Urosporium 4:397 



h Hvnhae not dichotomous or broadened 



•^ Ceratophorum 4:395 



II Conidia in chains 



I Conidia not connected by isthmi Septonema 4=397 



2. Conidia connected by isthmi Polydesmus 4: 401 



Macronemeae 

 Fertile hyphae distinctly different from the conidia 

 I. Conidia solitary or nearly so, acrogenous for the most part 



1. Conidia muticate 



a. Conidia echinulate Heterosporium 4:480 



b. Conidia smooth 



(1) Biophilous 



(a) Hyphae creeping, radiate Ophiotrichum 10:617 



(b) Hyphae ascending or erect 



x. Conidia ovoid to oblong Napicladium 4: 481 



(inch Cercosporidium 18:594) 

 y. Conidia filiform or vermicular Cercospora 4:431 



(2) Saprophilous 



(a) Hyphae rigid ; conidia ovoid to elongate 



x. Conidia ovoid Brachysporium 4:423 



y. Conidia elongate Helminthosporium 4: 402 



(b) Hyphae flexuous, pannose Drepanospora 4: 430 



2. Conidia 1-3-ciliate at apex Camposporium 4:482 



II. Conidia verticillate or capitate 



1. Hyphae dark 



a. Conidia acrogenous, forming a head 



(1) Hyphae simple Acrothecium 4: 483 



(2) Hyphae branched at the apex Atractina 18:584 



b. Conidia pleurogenous, somewhat verticillate 



(1) Hyphae rostrate and naked at apex 



Rhynchomyces 18:584 



(2) Hyphae not rostrate at apex Spondylocladium 4:482 



2. Hyphae hyaline or bright-colored, apex denticulate 



Neomichelia 18:593 



III. Conidia catenate as a rule 



1. Conidia arising from the interior of the hyphae 



Sporoschisma 4:486 



2. Conidia arising from the apex, sometimes solitary 



Dendryphium 4: 487 



Dictyosporae 



4:406, 10:665. 11:632, 14:1000. 16:1075. 18:612 



Conidia dark, rarely hyaline, muriform, globose to oblong 



