62 SEA MOSSES, 



and entangled, so that it will look like a formless 

 mass of green as it rises to the surface of the water 

 and washes on shore. The only guiding mark is its 

 long, straight, or inwardly curved ultimate branchlets. 

 These are conspicuous, and the cells of which they 

 are made are also seven or eight times longer than 

 broad. The filaments are as fine as human hair, six 

 or eight inches long, and have a very silky look when 

 massed in the mounted specimen. The color is a 

 very bright yellowish green when fresh. Mr. Collins 

 finds it at Nahant between tide marks. It is a summer 

 plant. 



Cladophora glaucescens, Griff. 



Grows in tufts not much entangled, on stones and 



rocks, between tide marks and in pools, from three to 



■ 



five inches high. The branches divide and subdivide 

 excessively, are quite slender, and the ultimate branches 

 are closely beset usually on the inside, almost always 

 on one side only, with a series of straight, acutely 

 branching undivided branchlets, composed of several 

 cells. In drying, the chlorophyl is usually dissipated 

 to one end of the cell, making the plant under the 

 lens look somewhat variegated. The filaments are 

 constricted at the joints of the cells. Color a pale or 

 glaucous green. 



