514 MEDICAL MYCOLOGY 



Ochraceous or darker, at least on Saboiiraurl maltose, never violet or reddish. 



Tubercular, conic base 1-2 cm., tip irregular, obtuse, 5-S mm. above medium, bright 

 yellow on Sabouraud glucose medium, variously channeled, margin velvety; on 

 horse, France. F. conicibm. 



Small ochraceous tubercles, with sulphur yellow border, covered with short velvet 

 in age; on conservation agar, rounded cerebriform yellowish gray mass; 

 human, probably of bovine oiigin. F. ochraceum. 



Small brown cerebriform colonies on Sabouraud agar; small grayish, isolated 



colonies on potato ; on horse. F. caballinum. 



Colony pale brown, flat with large thick papiUa in center, center may remain 

 flat and be surrounded by a ring of papillae; tinea capitis, not inoculable to 

 guinea pig. F. glahrum. 



Colony some shade of purple, violet or maroon, often brown or yellowish gray in age or in 

 subcultures; predominantly human cases of cndothrix type. 

 Colony moist shining brown, center with fine spines; after a few weeks a narrow violet 



border appears. F. violaceum var. marginatum. 



Colony rounded with knob in the center, violet with 5-6 radial folds. 



Pigment diffusing into mediimi, scarlet red, no sign of inflammation in lesions. 



F. violaceum var. Ichartoum^nse. 

 Pigment not diffusing, usually with some inflammation. 



F. violaceum. 

 Colony similar but scarlet red, blood red marginal strands; not inoculable to experi- 

 mental animals. F. violaceu/m, var. coccirMtum. 

 Colony with prominent, more or less cerebriform center with many regular radial furrows, 



violet; inoculable to guinea pig. F. Gourvili. 



Colony dark maroon, surface of small glabrous nodules, finally covered with whitish 



powdery lanugo. F. spadix. 



Colony dark brownisli purple developing powdery velvet, margin cream color. 



F. coccineii/m. 

 Colony irregular, not elevated, with a slight boss, avellaneous, margin of thick, branched, 

 submersed rays, powdery where they reach the surface. 



F. avcllaneum. 

 Colony gray or blue gray; growth very poor on sugar media, forming an immersed disc, 

 2 cm. in diameter, with only a small blue gray knob above the surface of the medium; 

 on conservation agar irregular, verrucose, grayish with submerged mycelium ; on donkey, 

 France. ' F. verrucosum. 



Colony greenish black, margin grayish white; growth very slow, center folded and knotted; 

 pigment diffusing into medium, coloring it blackish green; on man, Japan. 



F. fuUgineum. 



Favotrichophyton discoides (Sabouraud) Neveu-Lemaire, Precis Parasitol. 

 Hum. 55, 1921. 



Trichophyton discoides Sabouraud, Maladies du cuir chevelu 3: 408-412, 

 1910; Chalmers & Macdonald, Jour. Trop. Med. Hyg. 18: 49-55, 1915. 



Ectotrichophyton (Favotrichophyton) discoides Castellani aud Chalmers, 

 Man. Trop. Med. ed. 3, 1004, 1919. 



Grubyella discoides Ota & Langeron, Ann. Parasitol. Hum. Comp. 1: 330. 

 1923. 



Caused tinea barbae with kerions in first case, lesions suggesting eczema 

 seborrhoicum, on forearm without great intensity, cured easily. Inoculable 

 to donkey, not to bull or monkey (Chalmers & Macdonald 1915). 



