MISCELLANEOUS FUNGI IMPERFECT! 



851 



Colonies on Sabouraud agar black, smooth, penetrating the medium, 

 craterifoi-m, later covered by a dark, ashy pubescence. On Loeffler's medium, 

 growth slow, colonies flat, with irregular margins not penetrating the medium, 

 no pubescence. On potato, colonies poor with long ashy tufts. Conidia pro- 

 duction best on Dox & Czapek agar according to Fonseca. 



PIYALODIDYMEAE 



Conidia hyaline, 2-celled, elongate, ovoid, clavate, or pyriform. 



Only one species of Diplosporium has been reported to be pathogenic, but 

 the following key is included since, very frequently, species of Trichothecium 

 and Arfhrohotrys appear in cultures as contaminants. 



» 



Fig. 138. — Goniphinaria Pedrosoi. (After Langeron 1929.) 



Key to Genera 



Couidia single, not in chains. 



Both cells of the coniJium similar, siiiooth. 



Conidiophores rarely or not at all branched. 

 Conidia typically pleurogenous 



Conidia arranged singly in a helix about the conidiophore. 



Haplariopsis. 

 Conidia in wlioils (Fig. 139). Arthrobotrys. 



Conidia terminal. 



Conidia borne on sterigmata. Diplorhinotrichum. 



