CHAPTER XLVIII. 

 THE PARASITIC HYPOMYCETES. 



Section I. The genus Discomyces, p. 655. 

 /. Discomyces bovis, p. 656. 



The parasites of actinomycosis, p. 660. 



//. Discomyces israeli, p. 661. ///. Discomyces thibiergi, p. 661. IV. Discomyces 

 liquefaciens, p. 661. V. Discomyces garteni, p. 661. VI. Discomyces astero'ides, 

 p. 662. VII. Discomyces forsteri, p. 662. VIII. Discomyces rosenbachi, p. 662. 

 IX. Discomyces madurce, p. 662. X. Discomyces freeri, p. 664. XI. Discomyces 

 brasiliensis, p. 665. 



The parasites of mycetoma, p. 665. 



XII. Discomyces minutissimus, p. 666. XIII. Discomyces farcinicus, p. 667. 

 XIV. Discomyces caprce, p. 668. XV. Discomyces hofmanni, p. 669. XVI. The 

 polychrome discomyces of Valle'e, p. 669. 

 Section II. The genus Malassezia, p. 669. 



1. Malassezia furfur, p. 669. 2. Malassezia tropica, p. 670. 3. Malassezia mac- 

 fadyeni, p. 670. 4. Malassezia mansoni, p. 670. 

 Section III. The genus Trichosporum, p. 670. 

 Section IV. The genus Coccidioides, p. 671. 

 Section V. The genus Sporotrichum, p. 672. 

 Section VI. The genus Oidium, p. 674. 

 Section VII. A fungus of unknown classification : the parasite of Bursattee, p. 674. . 



SECTION I. THE GENUS DISCOMYCES. 



Parasites of the genus Discomyces Streptothrix (Cohn) were formerly 

 grouped with the Bacteria, but Sauvageau and Radais have shown that they 

 really belong to the family of the Oosporidce of the Hypomycetes. The para- 

 sitic species of the Discomyces which produce disease in man and the lower 

 animals' do not however appear, as was thought, to belong to the genus 

 Oospora, and the majority of observers now agree that it is better to accept 

 Blanchard's classification and to group them among the Oosporidce, but with 

 the generic name Discomyces (Rivolta). 



The Oosporidse are fungi consisting of a branched septate mycelium the 

 mycelium was for long considered to be non-septate but Gueguen has shown 

 that it is in fact septate and in which reproduction takes place by rows of 

 rounded conidia. 



It is not uncommon to find parasites belonging to the Oosporidce in the mouth, 

 where they may be responsible for white patches, ulcers and abscesses in the tonsil 

 (Roger, Bory and Sartory). In the sputum of persons suffering from various pul- 

 monary diseases both Roger and Flexner have found similar parasites. 



The various species of the genus Discomyces possess certain characteristics in 

 common. They grow readily in artificial culture media, and in liquid media give 

 rise to a growth somewhat resembling the leaves of the water lily ; the medium 



