TRICHOPHYTONEAE 559 



mals. In 1890, this species was reported common in Scotland, Italy, Spain, 

 Austria, Poland, Volga and Caucasus governments of Russia, China, Central 

 Asia, and Abyssinia, occasional in Holland, Scandinavia, and France, rare in 

 England, Switzerland, America, and Japan. At present it is reported com- 

 mon in Southern Japan, Algeria, Holland, Rhine Valley, and Eastern Germany, 

 especially in Schlesien, Bosnia, Hungary, Poland, and the Russian border 

 states, Transcaucasia, Bessarabia, Italy, and Scotland. Occasional in France, 

 rare in Formosa, Northern Japan, Manchuria, United States, Portugal, Argen- 

 tina, and Sao Paulo in Brazil. 



Ordinarily only arthrospores present, but aleurospores abundant on grains 

 of barley and carrot, much less on potato and wheat, none o(n other media so 

 far reported. Aleurospores 6.5-7 x 5-5. 5/x. 



Cultures on Sabouraud agar yellowish white similar to fresh beeswax; 

 colony cerebriform, heaped, not spreading. Form constant on the usual media, 

 varying in the fineness of convolutions, size, and rapidity of development. Suc- 

 cessive subcultures grow more rapidlj^, colonies never velvety until pleomor- 

 phism sets in when they become cottony, white. Before pleomorphism, best 

 growth on high nitrogen and low carbohydrate media, while after pleomor- 

 phism, the proportions are reversed. Pleomorphic cultures of A. Schoenleini 

 are suggestive of primary cultures of A. muris. On potato and carrot, colonies 

 dirty white, elevated, irregular, not velvety, not producing pigment on media. 

 On gelatin and coagulated serum small irregular colony, whitish, not velvety; 

 liquefaction begins in about a week but is very slow. On milk, casein com- 

 pletely digested in 3 weeks. At 37° C. growth rapid, colony disciform. On 

 wheat, colonies small, irregular, grayish yellow masses with wrinkled surface. 

 After 7 months they become powdery, white. 



Grigorakis (1933) has renamed a pleomorphic strain of this species Arth- 

 rosporia Gougeroti. 



Chen. Kurotchkin and Hu (1931) described a buff variety common in 

 Peiping, China. Colony 2.5-5 mm. in 7 days, small round, smooth surface, 

 slightly powdery and buff. Submerged growth profuse 3-4 cm. in 10 days, 

 composed of deep radial rays. After 2 weeks, secondary growths buff and 

 glabrous or white with short velvet. Morphology and lesions of A. Schoenleini. 

 Guinea pig inoculation resulted in about 50% infection. When scutula were 

 used, only superficial scaly lesions developed, while inoculation from cultures 

 produced small typical scutula. 



Var. mongolica (Hashimoto & Ota) Dodge, n. comb. 



GruhyeUa Schoe^ileini var. mongolica Hashimoto & Ota, Jap. Jour. Derm. 

 Urol. 27: 386-409 [33-35], 1927. 



Producing favus in Mongolia, mouse very susceptible, with a large deep 

 scutulum. On guinea pig and rabbit slight lesion, spontaneously healing. 



On glucose, maltose, or conservation agar, mycelium straight, frequently 

 branched, rarely undulate, septa distant. Intercalary chlamydospores, pecti- 

 nate organs, fa vie candelabra, nodular organs (?) (resembling "cocon d'uue 

 chrysalide entre des brindelles"). 



