846 



MEDICAL MYCOLOGY 



Isolated from ulcers on the leg of a Malgache, twenty-eight years old, 

 which developed after a bath in a brook. The primary lesion healed promptly 

 but, after a forced march, the leg broke out into confluent nodosities followed 

 by ulcerous tumors, from which oozed a seropurulent liquid with a fetid 

 odor. The whole area between foot and thigh was invaded. Aseptic puncture 

 of fresh tumors gave a blackish bloody liquid from which, after 10 days, the 

 organism was regularly recovered. In pus and in the hypertrophied connec- 

 tive tissue were numerous ovoid bodies, 3-4/t long, staining intense violet with 

 Giemsa stain. Pathogenic to guinea pig and white mouse. Medication with 

 KI ineffective. 



Mycelium chocolate brown, pulverulent, plane becoming cerebrif orm ; on 

 carrot heaping up 1 cm. or more at point of inoculation. In hanging drop, 

 the mycelium germinates oidium-like after 4 days, forming arbuscles of ovoid 

 elements which decrease in size from base to summit of branches; later form- 



Fig. 136. — Hormodendron olivaceum Corda. (After Corda 1839.) 



ing elongated conidiophores. On slices of carrot, oidia are almost at once 

 replaced by hyphae, cylindric, flexuous, branched, tending to become verticil- 

 late, with the ultimate branches more or less breaking up to resemble oidia, 

 reminding one of Cladosporium penicillioides. Oidia of first filaments germi- 

 nating, 3-10 X 3-4/A. On solid media, cells of hyphae measure 2.5-3 x 15-25/*. 

 Conidiiform cells of the long chains measure 3-4 x 2-4/i,. 



Hormodendron Fontojmonti Langeron apud Brumpt, Precis Parasitol. ed. 

 2, 1913; fide Langeron, Bull. Soc. Path. Exot. 15: 436-443, 1922; footnote 

 Fontoynont & Carougeau, Bull. Soc. Path. Exot. 15: 424-435, 1922. 



Found in hodi potsy or parasitic achromia in Madagascar. 



Mycelium brown, septate, thick-walled, 2.5-7.8/* in diameter (mean 4/* on 

 carrot). Sporophores well differentiated, dendroid. Chains of blastospores 

 arise on tubercles or sides of last joint of conidiophore, the lower member of 



