74 SEA MOSSES. 



thin edges of the lobes are bordered with a fine 

 dark line. The frond is split down from the margin 

 with clefts running down quite to the base, or half- 

 way or a quarter of the way, and the lobes are more 

 or less profusely sprinkled over with dark colored fruit 

 dots. It may be found throughout the season at Santa 

 Barbara and San Diego, upon small rocks near low- 

 tide, or thrown up by storms upon the beach. 



Order.— FUCACE&. 



Genus — SARGASSUM* Ag. 



This genus is represented by but one species on 

 our north Atlantic coast. But this species is com- 

 mon enough along most of the shores » south of Cape 

 Cod. 



Sargassum Vulgare, Ag. 



The plant grows from a flat disdoid hold-fast, 

 with a filiform stem as thick as stout wrapping- 

 twine, which branches alternately, and bears on the 

 main stem and branches long narrow leaves, which 

 have stalks or petioles, a well-defined midrib and 

 toothed edges, and are marked on the surface with 



* Sargassum, from Sargazo, Spanish fur Sea-lentils. 



