MOLDS AND YEASTS AND DISEASES CAUSED BY THEM 237 



kraut, sour milk and cheese. The organism is especially impor- 

 tant in the ripening of Camembert cheese. It grows well on ordi- 

 nary nutrient gelatin. The colony consists of a loosely woven, 

 white network of septate, branched and anastomosing threads, 



FIG. 94. Oidium albicans. A deep colony on a plate culture of the liquifying 

 variety, showing chlamydospores. (After Plant.} 



chiefly in the substratum but also extending into the air. The 

 peripheral threads are divided by septa to form chains of oval 

 or spherical conidia. 



This mold may be readily obtained for study by making plate 

 cultures from compressed yeast. 



