372 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 3 



PLATE 37 

 Variation in leaves, vesicles, and "inflorescences," x 3.75. 

 Figs. 1-7. Sargassum acinaci folium, Marchant 19. 

 Figs. 8-16. Sargassum acinacifolium, Johnston 75. 

 Figs. 17-26. Sargassum acinac'tfolium, Brandegee 2. 

 Figs. 27-30. Sargassum MacDougalii, Dawson 383 (inamature). 



