FUCUS VESICULOSUS. 



shaped, mostly in twos, as seen at b, fig. i. It has a peculiar odor 

 and a nauseous, saline taste. The reproductive organs are devel- 

 oped on different fronds. The fronds bearing the male organs are 

 an olive brown, while those of the female are a reddish brown. 



Fig. i shows a frond of Fucus Vesiculosus, natural size. The 

 pair of air-bladders, which gives the name to the sea-weed, is 



Fig. j. Conceptacle, F. Vesiculosus. a. Interlacing Filaments, b. 

 Epidermal Cells, c. Oogonia. d. Hairs, (xfj Diameters?) 



seen at a. Generally all of the tips of the branches are enlarged 

 and bearing, thickly crowded on the surface, the small conceptacles 

 which contain the reproductive organs. 



A cross section of the enlarged tip, seen at b. fig. i, was 



