72 



PRACTICAL BOTANY. 



The Siphoneae or Coeloblastae. These are branched 

 filamentous plants, each consisting of one cell, there being 

 no transverse divisions except where the reproductive 



FIG. 34. Vaucheria. Filaments of the plant in the vegetative condition, 

 showing the mode of branching and the lack of partitions. 



organs are formed. The protoplasm is continuous through- 

 out the filaments. The plants vary considerably in size, 

 and occur under somewhat different conditions. They 

 are of common occurrence in both fresh and salt water. 



