SPOROTRICHUM BEURMANNI 



1119 



may present some brownish or black pigmentation. Glucose 

 gelatine is slowly liquefied. Mycelial threads as a rule not very 

 straight, rather bent, curved, or undulating; they are about 2 ^ in 

 diameter. Conidia present in small numbers, oval, supported by 

 a short sterigmata. Ferments lactose, producing acidity but no 

 gas; has no action on saccharose. 



Pathogenicity.— It is the cause of Schenk's sporotrichosis, found in 

 North America. According to de Beurmann, this fungus is very 

 little or non-pathogenic to rats and mice. 



Sporotrichum beurmanni Matruchot and Ramond, 1905. 



Synonym. — Rhinocladium beurmanni Verdun, 1913. 



Discovered by de Beurmann in France, and completely investi- 

 gated by himself and Ramond, Gougerot, Dor, Sicard, Pinoy, etc., 

 in that country ; by Adamson in England ; by Lutz and Splendore 

 in South America; by Carougeau in Madagascar, etc. 



Parasitic Life. — In the tissues oval, yeast-like, or short bacillary 

 forms are seen, 3 to 5 /.t in length and 2 to 3 in breadth, free or 

 engulfed by phagocytes. Pinoy has described some minute oval 

 forms the shape and size of piroplasmata inside the macrophages. 

 In a case of general infection he has made the important observa- 

 tion that typical fructifications may be seen in the blood capillaries. 



Cultures. — -The best media are Sabouraud's maltose agar and 

 glucose agar. The growth begins to appear between the fourth and 

 the twelfth day. Optimum tem- 

 perature 22° C. The growth may 

 be whitish at first, but soon 

 becomes completely black or of a 

 brownish chocolate-like colour. 

 The surface is cerebriform. 

 Glucose gelatine is slowly 

 liquefied. Mycelial threads 

 about 2 in diameter, rather 60 5. -Sporotrichum beurmanni 



straight. Conidia oval, 5 to 6 Matruchot and Ramond. 



in length and 3 in breadth, (After Gougerot.) 



supported by short sterigmata. 



In contrast to Sp. schenki, the conidia are extremely numerous. 



Ferments saccharose, producing acidity, but no gas; has no action 

 on lactose. 



Pathogenicity. — Is the cause of by far the greatest number of 

 cases of sporotrichosis in Europe (see p. 2086). Is very pathogenic 

 to rats and mice. 



Sporotrichum dori de Beurmann and Gougerot, 1908. 



'Found by Dor in a case of gummatous sporotrichosis. In con- 

 trast to the typical Sp. beurmanni, the growth on maltose and 

 glucose agars is slower; the colonies do not coalesce into a large 

 mass, but remain separate and small, not exceeding i| millimetres 



