TRICHOPHYTONEAE 551 



Var. depauperatum (Gueguen) Dodge, n. comb. 



Microsporum depauperatum Gueguen, Arch, de Parasitol. 14: 426-446, Figs. 

 1-25, 1911. 



Sdbouraudites (Aleuramma) depauperatum Ota & Langeron, Ann. Para- 

 sitol. Hum. Comp. 1 : 329, 1923. 



Producing herpes circinatus on thigh. Lesion pruriginous, scaly without 

 vesicles; fatal to white mice, not inoculable into guinea pig or man. 



In lesions, hyphae 2-3/a in diameter, constricted at the sparse septa; in 

 culture chlamydospores 40 x 20/a, wall irregularly thickened on ordinary agar ; 

 aleurospores rare, pectinate hyphae and racquet mycelium present ; clostero- 

 spores very rare, several celled when present. 



Colony a slightly powdery, flat, compact disc. On potato, cottony disc. 

 On gelatin liquefying medium after about 2 weeks. 



Forma pertenue (Plaut apud Klehmet) Dodge, n. comb. 



Microsporum pertenue Plaut apud Klehmet, Deutsch. Med. Woch. 45: 1188, 

 1189, 1919. 



On glabrous skin, causing occasional epidemics in Germany, not easily 

 inoculable to guinea pig, lesions slight with spontaneous healing. Not inocu- 

 lable to adult men, but rarely to women (nursing sisters caring for infected 

 children developed slight lesions between the breasts, which healed promptly) . 



Mycelium 2-3.5/a in diameter, some arthrospores at first, later chlamydo- 

 spores ; aleurospores solitary, rarely in twos and threes. 



On Sabouraud maltose agar, colony 4 cm. in diameter in 4 weeks, fine 

 gray strands with center yellowing and finally browning in 2 months when 

 growth ceases; pleomorphism in 4 weeks. On conservation agar, growth simi- 

 lar but slightly faster, pleomorphism (?) in 3 weeks. On gelatin, growth 

 deeper in medium, similar pleomorphism in 3 weeks, liquefaction only after 4 

 weeks. On Plaut^s favus medium [peptone 3%, agar 3%, maltose 2%], 

 colony much better, reverse golden yellow, center slightly elevated, small, 

 surrounded by a furrow, with 5 deep and 10-15 shallow radial furrows. 



Doubtful and Excluded Species 



Microsporum brachytomum Ono, 1921. 



Microsporum anomeon Vidal, Ann. Derm. Syphiligr. II. 3: 22, 1882, is 

 Micrococcus sp. fide Vuillemin, Bull. Soc. Myc. France 11: 98, 1895. 



Microsporum trachomatosum Noiszewski, Gazzetta Lekarska 25: 998, 

 1890; Blanchard, Traite Path. Gen. 2: 925, 1896. 



ACHORION 



Achorion Remak, Diagnostische u. pathogenetische Untersuchungen 193, 

 Figs. 5, 6, 1845 [quoted from Robin, 1853] . 



Lophophyton Matruchot & Dassonville, Rev. Gen. Bot. 11: 429-444, Pis. 

 18, 19, 1899. 



Gruhyella Ota & Langeron, Ann. Parasitol. Hum. Comp. 1 : 330, 1923. 



