PLATE XXV. 



[Proc. Wash. Acad. Sci., Vol. Ill, PI. LVIII.] 



Fig. I. N'ereocysiis ^r/'apus {Gmel.) Saunders ; much reduced. 



2. " " " section of blade showing fruit. 



3. " " " longitudinal section showing mucous canals 

 (X40). 



4. Nereocystis priapus (Gmel.) Saunders (X40). 



5. " " " cross section of stipe showing mucous 

 canals and secreting cells. 



[478] • (242) 



