MYCODERMA RUGOSA 341 



MYCODERMA MONOSA. Anderson 1 



"Morphology. Cells in young cultures are elliptical or narrowly 

 elliptical; in old cultures cells are of various forms, predominantly 

 elliptical, with numerous elongated and 



irregular forms. Rows of elongated Q - 



cells in old cultures form a false my- QOo (\ o (\OU JJ 



celial development. No true septation y A ^L \] O^^ 

 is observed. Budding occurs from the ^=2~^> 



ends or from shoulders of the young ~"7~ 



cells. The size is 2 X 5.5 fi. Fig- HG-C.-M^odmna monosa, 



"Cultural Characters. On all agar Anderson, 



slants the streak is spreading, dull, * Cells ^g^^ oifcEre Culture: 

 white, flat, and becoming gray with age. - 



A heavy dull pellicle is formed within 24-48 hours on all liquid sugar 

 mediums and on beer wort. There is a villous growth along stab in 

 gelatin. 



"Physiologic Properties. Glucose and levulose ferment readily. 

 There is no change in litmus milk. Sugar mediums, with an original 

 acidity of - 1, become less acid after 1 week. The culture was isolated 

 from human feces." 



MYCODERMA RUGOSA. Anderson 



Anderson isolated this yeast from human feces and characterized 

 it as follows: 



"Morphology. Cells in young cultures are elliptical, oblong, 

 elongated, or somewhat irregular; in old cultures the cells on the sur- 

 face of the medium are oblong, 

 ovate or elongated; beneath the 



) VJ/9 surface very long, narrow cells of 



hyphal character are produced by 

 the elongation of the bud at the 

 distal end of another elongated cell. 

 Fig. 146-D. Mycoderma rugosa, An- No septate mycelium is formed, 

 derson. Budding in young cells occurs from 



1, Budding Cells from Young Beer Wort Culture; en( J Qr ghoulder. The size is 3 X 

 2, Cells from Old Culture. 



6.5 ju. 



"Cultural Characters. On glucose agar slant the streak is white, 

 dull, and flat, but not spreading; later the surface becomes glisten- 

 ing and decidedly rugose and pitted. Bushy growths may extend 



1 Anderson, H. W. Yeast-like fungi of the human intestinal tract. Jour. 

 Infectious Diseases, 21 (1917), 341-386. 



