CHAPTER XXXIII 



Other Pathogenic Fungi 



NUMEROUS other species of fungi undoubtedly have a capacity for 

 parasitic invasion. Only a brief description of their characteristics 

 will be given, since in our experience they are mainly laboratory speci- 

 mens. We believe that they will be rarely isolated in this country. More 

 detailed descriptions may be found in one of the texts mentioned in the list 

 of reference books, page 357. 



1. MICROSPORUM EQUINUM 



This fungus is pathogenic for animals, particularly the horse. Infection 

 of human beings is found chiefly in those who have contact with horses. 

 The clinical appearance of the infection simulates that of an infection 

 caused by M. lanosum. On culture a white downy growth with radial 

 grooves results. Fuseaux are less numerous than with M. lanosum. 



2. ACHORION QUINCKEANUM 



Infection with this fungus (the cause of mouse favus) is evidenced clin- 

 ically by inflammatory lesions. Scutula may form in mice but not in human 

 beings. On culture the growth is white and downy, with concentric fold- 

 ings and radial grooves. Mieroconidia, fuseaux and nodular organs max be 

 seen in the culture mount. 



3. ACHORION GALLINAE 



This fungus (the cause of chicken favus) is probably not pathogenic for 

 man. The surface configuration and microscopic appearance arc similar 

 to those of A. quinekeanum. A strawberry-red color is distinctive. 



339 



