760 MEDICAL MYCOLOGY 



up into rods of varying lengths and curvature. Organism is a facultative 

 anaerobe, shows no capsule. Optimum temperature 37° C, little or no growth 

 at lower temperatures. Reported both gram-positive and negative, not acid- 

 fast. 



This fungus is difficult to cultivate, giving no growth on potato, plain or 

 glucose agar, ascitic glucose agar, plain or glucose broth, milk or gelatin. On 

 blood agar, colonies fine, grayish white, discrete, elevated, dull becoming 

 glistening. On ascitic agar, growth grayish white. On Loeffler's blood serum, 

 colonies colorless (Schottmiiller) ; colonies whitish, circular, elevated, sharply 

 margined, smooth, glistening, moist, fine (Blake). Similar on human blood 

 agar. 



Actinomyces londinensis Brumpt, Precis Parasitol. ed. 4, 1204, 1927. 



mreptothrix hominis II Foulerton, Lancet 1 : 970, 971, 1906 ; Ibid. 1 : 627, 

 1910. 



Nocardia londinensis Chalmers & Christopherson, Ann. Trop. Med. Para- 

 sitol. 10: 256, 1916. 



Found in an abscess of the tongue. Pathogenic to guinea pig and rabbit. 



Claviform formations in broth and whole tufts of hyphae incrusted. On 

 glycerol agar, slight growth, colonies small and white. No growth on potato. 

 Organism a strict aerobe, not acid-fast. 



Actinomyces Foulertoni (Chalmers & Christopherson) A. Sartory & A. 

 Bailly, Mycose pulmonaires, 256, 1926. 



Streptothrix hominis Foulerton & Jones, Trans. Path. Soc. London 53: 56- 

 127, 1902. 



Nocardia hominis Castellani & Chalmers, Man. Trop. Med. ed. 2, 819, 1913. 



Nocardia Foulertoni Chalmers & Christopherson, Ann. Trop. Med. Para- 

 sitol. 10: 256, 1916. 



Found in abscesses of chest and in sputum. Not pathogenic to rabbits. 



No claviform formations. Organism a strict aerobe, growing best at 

 37° C. Gram-positive, not acid-fast. 



On glycerol agar, colonies small and whitish. No growth on potato. On 

 peptone agar, growth slow, colonies small, whitish, heaped up, dry. In inspis- 

 sated horse serum, growth scanty, colonies sinking into medium. In peptone 

 broth, small, spherical, whitish colonies cohering in flocculent masses. 



Actinomyces decussatus (Langeron & Chevallier) Brumpt, Precis Para- 

 sitol. 1206, 1927. 



Discomyces decussatus Langeron & Chevallier, C. R. Soc. Biol. 72: 1030, 

 1031, 1912. 



Nocardia decussata Castellani & Chalmers, Man. Trop. Med. ed. 2, 817, 1913. 



Oospora decussata Sartory, Champ. Paras. Ilomme Anim. 825, 1928. 



Found in whitish, dry, scaly lesions suggesting pityriasis circinata or 

 marginata. Pathogenicity doubtful. 



Hyphae 0.3-0.5/^ in diameter, cells 1 x 3-4/x in old hyphae. Arthrospores 

 1-1.5/x in diameter. 



