THE MARINE BOTANIST. 281 



C. Rothii by its minute and scattered habit, than 

 by any peculiarity of branching* y the fruit is, 

 however, very different. 



C, Daviesii. Parasitical on the smaller algae^ 

 generally on Ceramium rubrum. Filaments two 

 or three lines high, forming elegant pencilled 

 tufts. 



