146 



PHARMACEUTICAL BACTERIOLOGY. 



III. Hyphomycetes. Systematic position of the pathogenic members 

 not well defined. Life history not yet fully worked out. 



i. Discomyces bovis. (Actinomyces) . The so-called ray fungus 

 which causes the condition in cattle known as actinomycosis, a disease 

 which can be transmitted to man. 



2. Discomyces madurce. (Mycetoma). Causes the cattle disease known 

 as madura foot, which can be transmitted to man. Essentially a tropical 

 disease. Two varieties (black and white) of the disease are reported. 



3. M alas sezia furfur. This is the fungus which causes a skin disease 



FIG. 67. Three terminal hyphae showing the characteristic spore formation of Peni- 

 cillium glaucum. This fungus is a true saprophyte and is never found on living fruits or 

 vegetables. Mouldy food substances are quite universally rejected as being unfit for 

 human consumption. 



(Tinea versicolor) which is quite common in tropical as well as in temperate 

 climates. 



4. Microsporoides minutissimus. Causes a skin disease known as 

 Erythrasma or Dhobie's itch. Found in the tropics. 



5. Trichosporum giganteum. Causes a disease of the hair. The 

 spores of the fungus are arranged about the hair in a peculiar mosaic. 



