48 BOTANY. 



The highest of the class are the gulf weeds (Sargassum), 

 plants of the warmer seas, but one species of which is found 

 from Cape Cod southward (Fig. 28, D, E}. These plants 

 possess distinct stems and leaves, and there are stalked air 

 bladders, looking like berries, giving the plant a striking 

 resemblance to the higher land plants. 



