SPOROTRICHEAE 797 



Acremonium Potronii Vuillemin, Bull. Soc. ISci. Nat. Nancy III, 1: 144- 

 148 (15-19), PI. 2, 1910. [First case reported by Potron & Noisette, Rev. Med. 

 del'Est43: 132-139, 1911.] 



Isolated from a generalized infection resembling sporotrichosis followed by 

 hydrarthrosis. This was the only organism found. Medication with potassium 

 iodide successful. Not pathogenic to guinea pigs or rabbits. 



Hyphae branched, septate, scarcelj^ l/x in diameter, sometimes in fascicles. 

 Conidiophores simple, usually divaricate, rarely once branched, phialiform 

 but not septate at the base, ultimate branches, 15-20^i long, inflated below 

 (up to 1.75/a), with a subequal neck (O.S/i,). Conidia successively formed and 

 expelled, rose, ovoid, smooth, with a short appendiculate base 4-5 x 2.2/a (Pig. 

 120). Optimum temperature 37°, scarcely any growth at 10° C. 



I 



Fig. 120. — Acremonium Potronii Vuillemin. (After Vuillemin 1910.) 



On agar, colony grayish white, smooth, covering the surface of the 

 medium. On glucose gelatin, small white tufts, 2-4 mm. in diameter, later 

 becoming confluent and rose color, adherent to the medium. On potato, colony 

 finely granular, later becoming rose color. On carrot, finely radiate colonies 

 in tufts, 3-4 mm. in diameter, white. As the tufts grow and become confluent, 

 the colony becomes coralloid and rose color. On coagulated egg albumen, a 

 white pellicle, becoming transparent and yellowish as the medium liquefies. 

 On peptone broth, tufts of long, tangled hyphae on the surface and in the 

 liquid which otherwise remains clear. In acid broth, growth poor; better in 

 alkaline broth. In broth or peptone solution, to which nitrate has been added, 

 pellicle white with white flocci in liquid. No indol formation. Milk coagu- 

 lated and liquefied, yellowing, colonies white. 



