220 SEA MOSSES. 



they might be easily applied to culinary uses in the 

 same way as the " Irish Moss." 



GlGARTINA MAMILLOSA, AG. 



This plant grows near low-tide, in Massachusetts 

 Bay, and northward, upon the rocks, among the 

 " Irish Moss " or Chondrus crispus, which it much 

 resembles in appearance. It has very much the 

 same habit of growth, a flattened, leathery, tough 

 frond, forking from near the base, dividing and sub- 

 dividing in the same way, broadly and openly. The 

 segments are more or less wedge-shaped, and have 

 a tendency to roll their edges inward, toward one 

 surface, making a channel on that side. It differs 

 from the Cliondrus, by having on the inside, or con- 

 cave side of the frond, a numerous growth of papillose 

 protuberances. These readily distinguish the plant, 

 and give it its specific name. 



I have collected it in considerable quantities at 

 Marblehead, and Mrs. Davis and Mrs. Bray find it 

 among the commonest plants on Cape Ann, as Mr. 

 Collins does also at Nahant. It is common at Santa 

 Cruz and northward. The color is a very dark purple, 

 black and rigid when dry. It does not adhere to 

 paper. 



