ALG.E 



123 



In the swollen and forked tips (Fig. Ill) of the rib- 

 bon-like body of Fucus numerous flask-shaped cavities oc- 

 cur, each of which communicates with the surface by a 



FIG. 115. Fucus: showing eggs in the oogonium (A) and after discharge (E), anther- 

 idium containing sperms (C), the discharged laterally biciliate sperms (G),aud 

 eggs surrounded by swarming sperms (F and H). After STRASBUHGER. 



