MOLD OR HYPHOMYCETB GROUP 



405 



de Beurnuinn, in 1903, described similar forms from France. The 

 disease has been reported in man and rats from Brazil, from man 

 in California, Argentina, Germany, and in the horse in the United 

 States and Madagascar. This disease is probably quite wide-spread, 

 but has not been recognized, or has been confused with others, 

 until recently. It is to be differentiated sharply from the true 

 epizootic lymphangitis of the horse. An excellent discussion of 

 the organism in its relation to disease in the horse was contributed 

 by Page, Frothingham, and Paige in 1910. 



Fig. 180. Sporotrichum beurmanni, from culture showing the mycelium and 

 spores (Page, Frothingham, and Paige, in " Journal of Medical Research"). 



Morphology. The examination of the material from culture is 

 most easily made in a hanging drop. The hyphse are slender and 

 septate. Spores or conidia are borne at the tips of side branches; 

 usually a number are formed successively and are found then 

 in clusters. The conidia are small, oval or spherical. They fre- 

 quently bud to some extent, and resemble somewhat the cells of 

 Blastomyces. The hyphse stain easily with the common anilin 

 dyes and are gram-positive. In using the latter stain the alcohol 

 must not remain too long in contact, otherwise the stain will be 

 removed. Whether or not the organism ever develops a perfect 

 or sexual stage is not known, but it does not seem probable. 



