152 



DEMATIACEAE 



a. Hyphae dichotomous and broadened at apex 



Urosporium 4:39? 



b Hyphae not dichotomous or broadened 



Ceratophorum 4=395 



II. Conidia in chains 



1. Conidia not connected by isthmi 



2. Conidia connected by isthmi 



Septonema 4:397 

 Polydesmus 4:401 



Macronemeae 



Fertile hyphae distinctly different from the conidia 

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



I. Conidia muticate 



a. Conidia echinulate 



b. Conidia smooth 

 (i) Biophilous 



(a) Hyphae creeping, radiate 



(b) Hyphae ascending or erect 

 X. Conidia ovoid to oblong 



Heterosporium 4:480 



Ophiotrichum 10: 617 



Napicladium 4:481 



(incl. Cercosporidium 18:594) 

 Cercospora 4:431 



y. Conidia filiform or vermicular 

 (2) Saprophilous 

 (a) Hyphae rigid ; conidia ovoid to elongate 



Brachysporium 4: 423 



Helminthosporium 4:402 

 Drepanospora 4:430 

 Camposporium 4:482 



Acrothecium 4 : 483 

 Atractina 18: 584 



X. Conidia ovoid 

 y. Conidia elorigate 

 (b) Hyphae flexuous, pannose 

 2. Conidia 1-3-ciliate at apex 



II. Conidia verticillate or capitate 



1. Hyphae dark 



a. Conidia acrogenous, forming a head 



(1) Hyphae simple 



(2) Hyphae branched at the apex 



b. Conidia pleurogenous, somewhat verticillate 

 (i) 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 



4:496, 10:665, 11:632, 14:1090, 16:107s, 18:612 



Conidia dark, rarely hyaline, muriform, globose to oblong 



