824 MEblCAL MYCOLOGY 



Key to Genera 



Conidiophore unbranched, swollen at the tip. 



Vesicle with hexagonal reticulations. Bhopalomyces. 



Vesicle without reticulations. Oedocephalum. 



Conidiophore unbranched, without swollen tip. 

 Conidial head more or less spherical. 



Conidia apparently produced simultaneously in a given head, radiating from the head. 

 Conidia spherical or ovoid. Haplotrichum. 



Conidia cylindric. Cylindroceyhalum. 



Conidia produced seriatim but clinging together in a ball. 



Conidia embedded in a gel. Hyalopus. 



Conidia not, or only .slightly, embedded in a gel. Cephalosporium. 



Conidial head elongate. Doratomyces. 



Conidiophore branched in whorls. 



Each member of verticil forked and bearing head of conidia on tip. 



Spicularia. 

 p]ach member of the wiiorl bearing conidia on upper side on small sterigmata. 



Coemansiella. 

 Conidiophore variously branched, not in whorls. 



Tips of branches acuminate, forming a head on each tip. Trichoderma. 



Tips of branches bearing tliree or more slender stripes, each bearing a head of spores. 



Botryosporvum. 

 Tips of branches swollen bearing radiating sterigmata, each bearing a single spore. 



Corethropsis. 



Of the above genera commonly appearing as contaminants ( Cephalosporium, 

 Trichoderma, and Corethropsis), all but Trichoderma have also been reported 

 as pathogens. Many of the genera are quite rare. 



HYALOPUS 



Hyalopus Corda, Icones Fung. 2: 16, 1838. 



The type is not stated by Corda. In this volume he described H. ochraceus, 

 H. filiformis, H. crystallinus, H. muscorum (Fig. 126), H. mycophilus, and H. 

 melanocephalus. All these species he had described and figured in volume I, 

 under the genus Stilhum. 



Hyphae scanty, repent ; conidiophores erect, mostly not septate, not or 

 only very slightly swollen at the tips. Conidia sessile, hyaline or bright 

 colored, clinging together in a gelatinous mass. 



This genus is doubtfully distinct from Cephalosporium. Most of the 

 species so far described are saprophytes on decaying wood and leaves. Two 

 pathogenic species have been described from the Ivory Coast. 



Hyalopus anoma Boucher, Bull. Soc. Path. Exot. 11: 332-336, 1918. 



Isolated from old lesions in three different patients, Ivory Coast. Medi- 

 cation with KI eff'ected a cure. Fatal when inoculated into guinea pigs and 

 rats. Organism recovered. 



