111 



68. Vaucheria. This is one of the most common of the 

 green Algae, occurring in felt-like masses of coarse filaments 



in shallow water and on 

 muddy banks, and also 

 commonly found on the 

 damp earth and pots of 

 greenhouses. It is often 

 called green felt. The 

 filament is very long and 

 usually branches exten- 

 sively; but its great pe- 

 culiarity is that there is 



FIG. 100. Vaucheria: showing 

 the large, branching, cceno- 

 cytic, filamentous body, con- 

 taining numerous chloro- 

 plasts and nuclei. 



no partition wall in 

 the whole body, which 

 forms one long con- 

 tinuous cavity. This 

 cavity is full of cyto- 

 plasm, and embedded 

 in the cytoplasm are 

 very numerous chloro- 

 plasts and also numer- 

 ous nuclei (Fig. 100). 

 Such a body, contain- 

 ing nuclei not sepa- 

 rated from each other 

 by cell-walls, is called a cwnocyte (common cell), or it is 

 said to be ccenocytic. 



FIG. 101. Vaucheria: showing the formation 

 of the lirge spore (A), its discharge (B), and 

 the beginning of a new filament (C). 



