212 SEA MOSSES. 



six inches high, and eight inches in the spread of 

 the frond. The general habit of growth is the same 

 as that of G. Icptophyllus. 



Rising by a flattened stem, which, two inches 

 from the base, widely forks, the two parts themselves 

 fork three or four times. The segments are nowhere 

 more than one-fifth of an inch wide, and all gradu- 

 ally taper towards the end, the ultimate ones being 

 long and slender. 



The fruit-vessels stand out like hemispherical 

 warts, one-tenth to one-eighth of an inch in diam- 

 eter, upon the flat side of the frond. Color of the 

 plant a dark red ; substance, thickish, cartilaginous 

 leathery. The general distribution and habitat are 

 the same as that of the other Pacific species, along 

 the whole coast of California. 



Genus.— AHNFELTIA* Ag. 



Ahnfeltia plicata,! Fr. 



This species is very common from New York 

 northward, and is also found sparingly at some points 

 on the west coast. It is extremely easy of identifi- 



* Ahnfeltia. Named for Ahnfelt, a German botanist, 

 f Plicata = Folded or doubled up. 



