OOPHYTA. 



133 



forms partitions, taking on eventually tte form of the adult 

 filament. It sometimes happens that before the new plant 

 resulting from the growth of a zoospore has formed its 



Fig. 62. — Showing the sexual state of an CEdogonium. A^ part of a filament 

 with three oSgones, og-, m, m, small filaments (dwarf males) which produce an- 

 therozoids in this species; i?, an oogone at time of fertilization: D, part of fila- 

 ment of another species, showing escape of antherozoids. Highly magnified. 



first partition, the protoplasm again abandons its cell, to be 

 for a second time a zoospore {E). 



278. In the sexual reproduction of the plants of this class 



