THE MARINE BOTANIST. 183 



spherical tuhercles (coccidia) containing a mass 

 of minute spores. 



SPH^ROCOCCUS CORONOPIFOLIUS,— 

 FRINGED SPH^ROCOCCUS. 



Fronds much branched, from six to twelve inches 

 high, spreading, feathery, upper branches forked, 

 often fringed with small processes in which the 

 tubercles are placed. Colour scarlet, darker in the 

 main stem. Substance rather stiff, horny, when 

 dried, and not adhering well to paper. On rocky 

 shores near low water-mark and beyond. Biennial. 

 Summer and autumn. Not uncommon on southern 

 shores of England, and western and southern coasts 

 of Ireland. Belfast. Very rare in Scotland, Bute. 



GRACILARIA.* 



Named after gracilis, slender. 

 Frond filiform, or rarely flat, carnoso-cartilagi- 



• It is to be regretted that this name is also applied to a 

 genera of insects. 



