796 



MEDICAL MYCOLOGY 



Oil glucose agar, colonies grayish white, dry, powdex-y, reverse, slightly 

 rose colored; agar turning brown. After 75 days, the reverse becomes brick 

 red. On "poor" agar, growth much the same but slower and the brown 

 deeper. Growth on maltose agar, creamy, gray, folded, suggesting the ex- 

 creta of earthworms, tinted brick color. On sweet potato, colony is a white 

 velvet finally becoming powdery; medium turns greenish. On potato glycerol, 

 colony is of much the same aspect as the substrate and is, therefore, difficult 

 to see. On glucose gelatin, growth is at first much as on glucose agar, then 

 villous and shining with liquefaction on the eleventh day. In glucose broth, 

 medium turbid, with floating white colonies which form a ring and tend to 

 form a pellicle. 



Acremonium niveum Boucher, Bull. Soc. Path. Exot. 11: 324-327, 1918. 

 Isolated from lesions on hands and feet. Two cases reported cured by 

 medication with potassium iodide. Fatal to guinea pigs. 



Fig. 119. — Acremonium alternatum Link. (After Saccardo. ) 



Mycelium septate, 2fi in diameter, hymenium formed of conidiophores, 

 branching at right angles with swelling in the median portion, each branch 

 being terminated by a long, pointed extremity bearing a single fusiform spore, 

 4-5 X 2-2.5/A. Conidiophores 20-22/x long, sometimes united in a coremium. 



On ordinary glucose agar, growth slow, Avliite then rose color, slightly 

 velvety, becoming dry and wrinkled. On Sabouraud conservation agar, colony 

 white, velvety, dry. On potato glycerol, colony snow white, depressed. On 

 sweet potato, colony velvety, white becoming rose color, with a snow white 

 pellicle covering the water in the bottom of the tube and extending about 5 

 mm. up the side of the tube. In giant colony, center wrinkled, velvety, white, 

 radiately striate, margins rose and velvety. In glucose broth, white flakes 

 float in all depths, forming a discontinuous pellicle, finally settling out, with 

 hyphae growing up the glass for 6 mm. 



