PLATE LVIIL 



Fig. I. IVereocys/ts pr/a/>us (Gmel.) Saunders ; much reduced. 



2. " " " section of blade showing fruit. 



3. '• " " longitudinal section ^^houing mucous canals • 



(X40)- 



4. Nereocystis friapus (Gmel.) Saunders (X4o)' 



5. " " " cross section of stipe showing mucous 

 canals and secreting cells. 



(478) 



