Plate 10 

 Figs. 1, 2. Stigeoclonium luhricum (Dillw. ) Kuetzing, x 440 

 Figs. 3, 4. Stigeoclonium subsecundum Kuetzing: 3, x 500; 4, x 440 

 Figs. 5-7. Protococcus viridis C. A. Agardh, x 1000 



680] 



