I 



TRICHOPHYTONEAE 481 



Trichophyton interdigitale Priestley, Med. Jour. Australia 4: 2: 475, 1917. 



Sabouraudites interdigitalis Ota & Laugeron, An)i. Parasitol. Hum. Comp. 

 1: 328, 1923. 



T. gypseum var. 2 Ota, Jap. Zeitschr. Derm. Urol. 20: 1920. 



T. gypseum var. C. Hodges, Arch. Derm. Syphilol. 4: 1-28, Figs. 1-12, 1921. 



Epidermophyton variahile Karrenberg, Arch. Derm. Syphilol. 17: 519-532, 

 1928. 



Probably the following also belong here : 



Trichophyton interdigitale var. Kaufmann-Wolf Ota, Arch. Derm. Syphilol. 

 5: 706-708, 1922. 



T. granulosum Kamabayashi, Jap. Zeitschr. Derm. Urol. 19: 1919 (fide 

 Ota, 1. c). 



T. gypseum var. 3 Ota, Jap. Zeitschr. Derm. Urol. 20: 1920. 



E. inguinale Kurotchkin & Chen, Nat. Med. Jour. China 17: 521-528, 6 

 pis., 1931. 



Typically producing macerated or dj^sidrosiform lesions in the interdigital 

 spaces, reported also from a scaly lesion in the groin. This species is close to 

 T. floccosum and has often been confused with it when the cultures have not 

 been studied critically. Some slight variants have been reported, but until 

 there has been a much more thorough study of the etiology of these lesions 

 both from the groin and interdigital spaces the confusion will continue. In- 

 oculable into experimental animals, producing an evanescent, scaly, erythema- 

 tous lesion, not infecting the hair. Common in Australia, Germany, United 

 States, Spain, Argentina, Sao Paulo, in Brazil, Shanghai, Japan (?). 



Closterospores present, multiseptate, gradually giving way to chlamydo- 

 spores in old cultures, compound thyrses of aleurospores and some spiral 

 hyphae present. (Descriptions of morphology brief and unsatisfactory, noth- 

 ing known of cytology.) 



On Sabouraud agar, growth is much more rapid than in E. floecosum. 

 Central boss obscured by pale buff velvet, the rest white velvet, reverse not 

 colored. On glucose agar, boss surrounded by a light buff area with a white 

 periphery, little velvet, colony suggesting a piece of blotting paper, reverse 

 chestnut brown, nearly black in the center with a yellowish periphery, soon 

 becomes pleomorphic. On nutrient agar is a flat white growth with a medium 

 velvet. On potato, abundant white growth with short velvet. On Pollacci 

 agar, central area cerebriform with flat margin, surface dry, powdery grayish 

 white, reddening (fide Bruhns & Alexander 1928). Keller reports several 

 variations, a cottony form, a powdery, yellowish colony and a cerebriform, 

 grayish white becoming reddish. 



The fungus described by Kaufmann-Wolf (1914), usually referred here, 

 belongs in E. pedis, since it produced no closterospores. 



Epidermophyton fl.occosuin (Harz) Langeron & Milochevitch, Ann. Par- 

 asitol. Hum. Comp. 8: 495-497, 1930. 



