DEMATIUM PULLULANS. 



It frequently occurs on fruits, especially grapes, and has a 

 branched mycelium from which buds are thrown out ; these 

 have a striking resemblance to ordinary yeast cells (4), and 

 are able either to propagate through many generations, by 

 yeast-like budding, or to produce germinating threads giving; 



Fig. 44. Dcmatium pullulans (after Loew). 1, 2, Full-grown mycelial threads with yeast-like 

 cells ; 3, cells of the latter developing to mycelial threads ; 4, cells with yeast-like buds ; fv 

 appearance of yenst-like cells on the germ tubes of the cells, with brown covering. 



rise to a mycelium (3). Skerst states that the mycelium 

 develops more particularly at low temperatures, whereas the 

 separate cells form at temperatures of 19-32 C. In a. 

 strongly concentrated grape-sugar solution the fungus chiefly 



