Iff. r*^5 i 



\i ( xtift 



FlG. 38. Vaucheria. 



A, tangled filaments of the living plant, showing mode of branching. 



B, extremity of a filament, showing cell-wall (c. w) and protoplasm 

 with chromatophores (chr], and oil-drops (o). The scale above applies 

 to this figure only. 



C 1 , immature sporangium (spg) separated from the filament by a 

 septum (sep] ; C 2 , mature sporangium with the spore (sp] in the act of 

 escaping ; c 3 , free-swimming spore, showing cilia, colourless ectoplasm 



