534 MEDICAL MYCOLOGY 



From a case of tinea tonsurans in a small child, microscopic preparations 

 of the hairs showed a typical endothrix organism. Argentina. 



Giant colony on Sabouraud glucose 4 cm. in a month, acuminate, divided 

 into two portions by a circular furrow, the inner portion dirty reddish purple, 

 the inner zone outside the furrow raised and red, then a white zone, then a 

 moist dirty white zone with the outermost zone indefinite, radiating actively 

 growing hyphae. Also separated into areoles by radiating furrows, often 

 cracked toward the center. On Sabouraud conservation agar the colonies are 

 brownish red, moist, and shining, with acuminate center crowned with a tuft 

 of spines, about a dozen radiating furrows. Colonies soon become pleomorphic 

 in contrast to T. Sahouraudi. Only aleurospores produced. 



Trichophyton cineraceum Americo da Veiga, Brasil Med. 43: 837, 1929. 



Produced tinea tonsurans and alopecia in Portuguese man in Brazil. 



Colony umbonate, dark ashy, surrounded by a darker furrow, then a zone 

 of dull cinereous and a white margin, reverse black. Group of T. nmbonatum 

 [T. acuminatnm 1] . 



Trichophyton acutulum Americo da Veiga, Brasil Med. 43: 837, 838, 1929. 



Produced tinea tonsurans on a Greek recently arrived in Brazil. Patient 

 claimed to have had this condition before leaving Greece. 



Spores large, 5/i,, endothrix. 



Colonies white, circular, with an acuminate center suggesting T. Sahour- 

 audi, subcultures yellower and more filamentous. 



Trichophyton Sabouraudi Blanchard in Bouchard, Traite Path. Gen. 2: 

 907, 908, 1896. 



Trichophyton a cidtures acuminees Sabouraud, Trichophyties Hum. 173, 

 1894. 



Trichophyton acuminatum Bodin, Champ. Paras. Homme 110-112, 1902. 



Aleurosporia acuminata Grigorakis, Ann. Sci. Nat. Bot. X, 7: 413, 1925. 



Trichophyton {Aleurosporia) acuminatum Guiart & Grigorakis, Lyon Med. 

 141: 377, 1928. 



One of the common organisms of tinea tonsurans, found in about 20% 

 of the cases at Paris (Sabouraud 's statistics), is apparently quite widespread 

 in Europe. Inoculable into guinea pigs but lesions heal spontaneously. For 

 clinical differentiation from lesions of Malmstenm type, see p. 445. 



Lateral aleurospores in irregular tliyrses; also swellings on the hyphae, 

 suggesting young chlamydospores, often seen (Bruhns & Alexander 1928). 



Colony at first a small hemispheric mass with several long, slender coremia 

 which persist but become less conspicuous in age ; soon powdery white, then 

 cream white, becoming brownish, sometimes with a violet tint, becoming a 

 flattened cone with radiating furrows of various depths with a thin flat margin ; 

 on conservation agar furrows less pronounced, surface glabrous, almost humid 

 and yellowish, growth rather slow, not more than 3.5 cm. in 40 or 50 days 

 under optimum conditions. Pleomorphism very rare, reported in a single 

 culture by Catanei (1931). 



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