58 THE MARINE BOTANIST. 



Annual. Summer. Land-locked bays on the coasts 

 of Scotland and Ireland. Abundant in many 

 places. Falmouth Harbour, Cornwall. 



DICTYOSIPHON. 



Name signifying a. net and a tube, in allusion to the 

 structure. 



Frond filiform, tubular, branched. Outer cells 

 small, inner ones elongated, connected into filaments. 

 Fructification. Spores scattered over the surface, 

 either in groups or singly. 



DICTYOSIPHON FOENICULACEA.— 

 FENNEL-LIKE DICTYOSIPHON. 



Fronds slender, filiform, fi'om one to many fee 

 in length. Of a yellowish oUve or brown colour, 

 arising from the main stem in an alternate manner; 

 from these again proceed a second and third series, 

 each more slender than the last, and all at the 



