198 SEA MOSSES. 



The other species, F. crassa, I have no speci- 

 mens or notes of, and so can give no account of 

 it. It is a northern plant, and may be found from 

 Santa Cruz northward through Oregon. 



Genu^.— CHAMPIA* Ag. 



Champia parvula, Harv. 

 The little Champia is an extremely variable, but 

 on our southern shores, a very common plant. It 

 need not be looked for north of Cape Cod. I 

 have found it in abundance at Southold, L. I., New- 

 port, near the beaches, Martha's Vineyard, Onset 

 Bay, and at other points. The fronds are fi'iform.' 

 Main stem and branches about the size of a pack- 

 thread. The living plant, in the water, is apt to 

 assume a globose appearance, on account of its prolific 

 and irregular branching. It grows to the height of 

 from two to six inches. It is softly cartilaginous, and 

 adheres well to paper. Its distinguishing mark, in 

 the tjrpical form, is, that both in the water and on 

 paper,_it is regularly and somewhat deeply constricted. 

 The constrictions vary in length from once to once 

 and a half times the diameter of the frond/ They 



* Champia = A personal name. 



