156 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 26 



PLATE 25 



Fig. 1-3. Ceramium procumbens S. & G. (after Setchell & Gardner) Fig. 1, 

 Habit of part of a prostrate filament to show opposite branching, X 

 30; Fig. 2, A tetrasporangial branch, X 125; Fig. 3, A spermatangial 

 branch, X 125. 



Fig. 4-5. Ceramium sinicola S. & G. Fig. 4, A branched, penetrating rhizoid, 

 X 120; Fig. 5, Apex of a filament to show spine, X 300. 



Fig. 6. Ceramium serpens S. & G. Habit of a tetrasporangial plant, X 125 

 (after Setchell & Gardner). 



