PLATE 37 



Spliacelaria californica Sauv. 



Fig. 23. Habit sketch showing the method of branching. X 10. 



Fig. 24. Cross-section in the mature part. X 125. 



Fig. 25. End view of a frond. X 125. 

 X 125. 



Fig. 26. Portion of the main frond and a branch with one i^ropagulum. 



Fig. 27. A branch with a terminal zoosporangium. X 125. 



Sphacelaria siibfusca S. and G. 

 Fig. 28. A terminal branch with propagula and a free propagulum. X 125. 



Sphacelaria furcigera Kuetz. 



Fig. 29. Tenninal portion of a ramulus with a short hair and two propagula. 

 X 125. 



Punctaria liesperia S. and G. 

 Fig. 30. Habit sketch. X 1. 



Pylaiella Uttoralis f. 



Fig. 32. Fruiting ends of ramuli showing opposite branching and inter- 

 calary zoosporaugia. X 125. 



[746] 



