Marine Groves and Gardens 



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with those of the land in diversity of form, but they 

 surpass them in linear size. The huge floating fronds 

 of Laminar'ia, whose stalk develops great rootlike hold- 

 fasts, are frequently ten or more feet long. But the 



sargassum; the gulfweed. 



lessonia; a laminarian seaweed. 



largest plant in the sea, and, for that matter, the great- 

 est in height in the whole world, is an Antarctic lami- 

 naria. This extraordinary seaweed rises from the 

 sloping bottom of the continental shelf with a frond 

 nearly a thousand feet in length. Other large lami- 

 narian forms grow on the sea bottom like trees, hav- 



