PLATE 35 



Piuwtaria occidentalis S. and G. 



Fig. 6. Cross-section of a frond showing the character of the cells, the 

 character and position of the zoosporangia, and two groups of hairs. X 250. 



Dictyota flabellata (Collins) S. and G. 

 Pig. 7. Cross-section through a group of oogonia. X 125. 



Halorhipis Winstonii (Anderson) Saunders 



Fig. 8. Cross-section showing groups of hairs and superficial zoosporangia. 

 X 125. 



Taonia Lcnnebackerae Farlow 



Fig. 9. Cross-section of a frond showing its structure and the position of 

 the oogonia. X 125. 



Fig. 10. Surface view. X 65. 



Neurocarpus zonarioides (Farlow) Howe 

 Fig. 11. Cross-section showing the characters of the cells. X 200. 



Myrionema strangulans Grew 



Fig. 12. A portion of the margin of the basal disk of cells showing the 

 method of cell division and branching of the filaments. X 125. 



[742] 



