210 SEA MOSSES. 



on our coast, Peaks Island, Me., Beverly and Nahant 

 Mass, and New York, But I do not think it can be 

 a very common plant, for I have never happened to 

 find it growing, and none of my correspondents have 

 seemed to be more fortunate than myself. It grows 

 in deep water, about two inches high, from a little 

 disk, by a stem at first cylindrical, twice as thick as 

 a bristle. In half an inch it forks, sending out a 

 main branch each way. In half an inch more it 

 flattens to one-eighth of an inch wide, and forks again 

 with a wide, rounded axil. Directly these again fork 

 in the same way, till five or six divisions have been 

 made, and the ultimate lobes will be one-fourth to 

 one-half an inch long, standing wide apart, and 

 rounded at the end. It has a darkish red color on 

 paper. 



Gymnogongrus leptophyllus,* Ag. 



This plant somewhat resembles the last. Like that, 

 the frond is flat and narrow, but the stalk is shorter 

 and not so cylindrical. Starting from a discoid 

 hold-fast, a small, narrow, flat stem arises, which 

 either branches at once, or forks at the height of 

 half an inch, into two widely spreading parts. These 

 divide and sub-divide, in the same way, two or three 



* Leptophyllus = Thin-leaved. 



