THE YEAST FUNGI. 153 



one mother cell in various directions, these daughter 



Fig. 29. The thrush fungus, Saccharomyces mycoderma. 

 (After Grawitz.) 



A, sprouting spores highly magnified. 



B, branched mycelium with a few .lateral buds, cultivated in dilute 



nutrient solutions. 

 <\ at a the yeast stage, at b the mycelium stage of the thrush fungus. 



cells being for the most 

 part round and arranged 

 in roll-like rows. The 

 fungus is able to set up a 

 very mild alcoholic fer- 

 mentation. Spore forma- 

 tion has not as yet been 

 observed. 



As the result of more re- 

 cent investigations, Plaut 

 does not regard S. myco- 

 derma and the thrush fun- 

 gus as identical ; the first sets up only minimal fermentation 







o 



Fig. 30. Pure cultivation of the 

 thrush fungus on a nutrient soil 

 containing sugar. (After Plaut) . 



