35 



the same, ]. Fig. 3 : cross-section of frond showing the thickening 

 of margin, ^ 5 . Fig. 4: tetrasporic sori, J-. Fig. 5: portion of a 

 young frond having pinnately arranged segments (from Enoshima), 

 \. Fig. 6 : stolon-like radical filaments (from Enoshima), \. Fig. 

 7 : cross-section of a young frond (from Enoshima), -J- 5 . 



Dictyota marginata Okam. 



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