Laguna Ratine Laboratory 



'21 Z 



Herposiphonia sp. 



(Figure 123) 



This was found in tow-stuff from the tide-pools, so that it is prob- 

 ably an epiphyte on other algse growing in such situations. 



Lophosiphonia obscura (Ag.) Falk. 



Common on low rocks of higher tidal zone, growing in dense col- 

 onies and acting as a sand gatherer. 



Figure 129. Callithamnion rupicolum f. pygmaeum Collins. 



Lophosiphonia villum (J. Ag.) S. and G. 

 Occurs intermingled with L. obscura. 



Heterosiphonia secunda (Suhr) Falk. 



Frequent as an epiphyte on various algae, especially corallines. 

 Dr. Setchell remarks that "this is the plant which has passed in our 

 lists under the name of Daxi/u snlisccmnla. The name given in the 

 list is merely a synonym. There seems to be some reason for sus- 

 pecting that our plant is not identical with the type of the species 

 given, but belongs rather to 77. pulchra of the Japanese coast." 



