ATRICHOPHYTON VIANNAI 



loog 



Spores are shed without forming a filament by their union, and 

 are of various sizes. All attempts at cultivation have failed. 

 It is the cause of tinea Sabouraudi tropicalis. 



Atrichophyton viannai de Mello, 1917. 



Synonym. — Trichophyton viannai de Mello, 1917. Found by 

 F. de Mello in a case of tinea corporis. Colonies on Sabouraud's 

 maltose-agar pinkish with often a violet tinge. 



Atrichophyton ceylonense Castellani, 1908. 

 Synonym. — Trichophyton ceylonense Castellani, 1908. 



Found by Castellani in cases of tinea nigro circinata. Temporary species, 

 cultivation having not been obtained; possibly a variety of A. blanchardi. 

 In fresh preparations the spores are very few in number, roundish, rather 

 large (4 fX), showing a double contour. The mycelial tubes are about 3f /x 

 in breadth, straight, or variously bent. It is found in tinea nigro circinata. 



Atrichophyton macfadyeni 



Castellani, 1905. 



Synonym. — Trichophyton mac- ^ ^ 



fadyeni Castellani, 1905. 



Found by Castellani in some 

 cases of tropical tinea corporis. 

 In fresh preparations mycelium ^ 

 and spores are rather of small ^ 

 dimensions. The mycelial tubes 

 are regularly shaped, do not show 

 swellings, and are about 2^ /j. in 



breadth. The free spores are very ^ ^ ' ^ ^ 



numerous, and present a peculiar ^Tc 

 ovoid shape, the maximum diameter 

 being 2\ to 3I ^. In stained Fig. 

 preparations the spores present a 

 bipolar staining. The fungus 

 grows with difficulty; on the rare 

 occasions when the inoculations are successful, the growth is very 

 slow, the colonies coalesce, forming a brownish mass, with deep 

 furrows, and deeply rooted in the medium. 



508. — Atrichophyton macfad- 

 yeni Castellani. 



(Stained with fuchsin.) 



Incert^ Sedis. 



Trichophyton balcaneum Castellani, 1916. 



Found in cases of peculiar condition of the scalp in the Balkans, 

 which clinically resembled more a diffuse type of severe pityriasis 

 sicca than a trichophytic affection. 



When grown on glucose agar from scales it slowly formed a 

 somewhat crinkled growth of whitish colour. An interesting 

 characteristic of this fungus is that apparently it does not become 



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