678 MEDICAL MYCOLOGY 



ish, rarely branched ; spores variable in size, spherical or ovoid, not in chains. 

 Fonseca & Ferreira Rosa (1930) report hyphae branched in scales. 



On glucose agar, the Fumago form with rounded cells, thick-walled, some- 

 times deeply colored. On carrot, the Dematium form with mycelium of short 

 cells, with simple blastospores ; yeast forms abundant, giving cultures humid 

 or varnished aspect. In carrot decoction, delicate mycelium with abundant 

 spores furnished with thickenings which serve as disjunctors. At first colony 

 easily separable from medium, giving the appearance of a black yeast; later 

 it becomes very hard with elevations and depressions similar to those of 

 Trichophyton acuminatum. Colony covered with a greenish bloom which 

 leaves a very black core. A. Sartory, R. Sartory, Rietmann & J. Meyer (1930) 

 report that it grows best on lipoid-containing media. It utilized glycine, hip- 

 puric acid, creatine, and creatinine freely, purines slowly and secondarily, 

 urea and guanidine not at all. 



Dematimn Mansoni (Castellani) Dodge, n. comb. 



Microsporum Mansoni Castellani, Brit. Med. Jour. 2: 1271, 1905. 



Foxia Mansoni Castellani, Jour. Trop. Med. Hyg. 11: 260, 1908. 



Cladosporium Mansoni Pinoy, Ann. Derm. Syphiligr. V, 3: 341-343, 1912. 



Torula Mansoni Vuillemin, C. R. Acad. Sci. 189: 406, 1929. 



Isolated from cases of pityriasis nigra in India. 



Hyphae short, 18-20 x 2.5yu, in diameter, arthrospores spherical, 5-7.5/i,, 

 frequently in clusters, uniguttulate. 



Pollacci & Nannizzi report that olivaceous hyphae, little branched, 2-2.5/1, 

 are terminated by ovoid or ellipsoid arthrospores, 7-8.5 x 2-2. 5;*, one-celled or 

 occasionally two-celled. 



On maltose agar, colonies hemispheric, dark greenish to black, coalescing, 

 forming a jet black, rugose mass. On broth and peptone solution, sediment 

 greenish black, no action and little growth on milk. Growth slow on gelatin 

 with little or no liquefaction. Optimum temperature 30°-32° C. ; growth slow 

 over 35° or under 25° C. 



Dem.atium Gougeroti (Matruchot) Grigorakis, Bull. Soc. Myc. France 40: 

 272-276, 4 figs., 1924. 



Sporotrichum Gougeroti Matruchot, C. R. Acad. Sci. 150: 543-545, 1910. 



Rhinocladium Gougeroti Verdun, Precis Parasitol. 1913. 



Early isolated from a gumma deep in a human leg muscle. Later found 

 in an ulcer on the dorsum of the penis with inguinal adenitis in a young man 

 in Madagascar (Fontoynont & Boucher, 1923) and a very similar case in 

 Porto Rico (Kesten et al., 1932). Griitz (1925) reports it from more super- 

 ficial lesions. Pathogenic to rats and monkeys (Kesten). 



Mycelium of moniliform filaments or isolated sprout cells. These give 

 rise to slender hyphae, which collect and produce black coremia. Spores 

 often borne in lateral tufts. Kesten et al. report spores 3.5-5.5 x 1.5-2.5/1. 



Colonies black from the first, elevated, with a velvety surface. 



