ALCOHOLIC FEEMENTS. 207 



In old cultures there is often a strong tendency to form 

 mycelium, but portions are only exceptionally found the cells of 

 which are firmly united together, showing only slight constric- 



FIG. 60. Saccharomyces Ludwigii. Old film and mycelium (after HAXSEN). 



tions ; these portions have distinct, straight, transverse walls. 

 Each cell of such a colony can form buds and spores. Amongst 

 them are also found irregular and very large cells with many 

 branches. 



It is also characteristic of this species that, when kept in a 



