854 



MEDICAL MYCOLOGY 



Key to Genera 



Conidia verticillate. 



Conidia acrogenous. 



Conidia subhyaline. Acrothecvum. 



Conidia black. Cacumisporium. 



Conidia acropleurogenous. 



Conidia curved, with the median cell longer and darker. Acrotheciella. 



Conidia straight, with the cells about equal. Spondylocladium. 



Conidia not verticillate. 



Conidiophores short and soft. Napicladium. 



Conidiophores long and quite rigid. Brachysporium. 



Fig. 141. — Diplosporium vaginae. (After Nannizzi 1926.) 



ACROTKECIUM 



Acrothecium Preuss, Linnaea 24: 111, 1851. 



f Acrothecium Corda, Icon. Fung. 2: 10, 1838 (as subgenus only). 



The type species is Acrothecium multisporum Preuss. 



Hyphae repent, not abundant. Conidiophores erect, unbranched, with a 

 group of sterigmata at the tips, bearing a head of conidia. Conidia elongate, 

 fusiform, dark colored or hyaline, with two or more septa. 



Acrotheciuin nigrum Ciferri, Ann. Parasitol. Hum. Comp. 7: 524-535, 1929. 



Isolated by Ochoterena from a case of black pinta in Mexico. 



i 



