MISCELLANEOUS FUNGI IMPERFECTl 853 



Conidia sessile. 



Conidia clavafe or pyrifoini, cells more or less equal. 



Conidiopliores not differentiated, conidia clavate, single. 



Didymopsis. 

 Conidiopliores differentiated, conidia pyriform, either single or in 

 small heads (Fig. 140). Trichothecmm. 



Conidia neither clavate nor pyriform, cells about equal. 



Diplosporium. 

 Conidiophores branched in whorls as in Verticillium. Diplocladium. 



Conidial cells wholly dissimilar, at least the upper warted. Mycogone. 



Conidia in chains. 



Conidia formed as oidia on the conidiophore, which is small and irregularly branched. 



Hormiactis. 

 Coiiidin foniH^l as cliains from the tips of conidiopliores, wliich branch in whorls. 



Didymocladium. 



DIPLOSPORIUM 



Diplosporium Link, in Linne Sp. PI. ed. 4 [Willdenow] 6: 1: 64, 1824; 

 Bonorden, Handb. allg'. Mykol. 98, 1851. 



The type species is Diplosporium nigrescens Link. 



Mycelium of repent, septate, branched hyphae ; conidiophores erect, ir- 

 regularly branched, bearing terminal, two-celled conidia. 



It is quite likely that considerable shifting of names will occur in this 

 group unless action is taken at the next International Congress. Originally 

 Link proposed this genus apparently in the sense of Cladotrichum of the cur- 

 rent monographs, in which case the latter name should fall into synonymy 

 with Diplosporium, and the species now placed in Diplosporium should be re- 

 named, if it is decided to separate black-spored and hyaline-spored groups. 

 Most modern monographers have apparently considered D. album Bonorden 

 the type of Diplosporium. 



Diplosporium vaginae Nannizzi, Atti R. Accad. Fisiocrit. Siena IX, 17: 

 491-499, 1 Jig., 1926. 



Found in purulent vaginitis. 



Heads broadly effused, confluent, white, then pale ivory. Hyphae 3-6/x 

 in diameter, ramulose, septate, conidiophores simple, subterete, 50-80 x 2.5-3)u,, 

 apex a little head of conidia stuck together. Conidia oblong-elliptic, almost 

 subfusif orm, 1-septate, constricted at septum, 15-20 x 5-6;u,, hyaline ; chlamydo- 

 spores short, pedicellate, rarely sessile, 1-celled, adnate to a globulose or 

 hemispheric vesicle, others bi- to pluricellular, wall thick, verruculose, 30-35/*, 

 hyaline, sometimes in single chains (Fig. 141). 



Colony round, mammillate, lanuginous, white, covering surface of medium. 



PHAEOPHRAGMIAE 



Conidia ovoid, elongate, cylindric, fusiform, straight or curved, Avith two 

 or more septa, dark colored ; occasionally single cells almost hyaline. 



