186 THE MARINE BOTANIST. 



" Tliis plant/' says Dr. Harvey, '^ has something* 

 the aspect of G, confervoideSy but may always be 

 known by its more succulent frond and very dif- 

 ferent substance. It is as soft and brittle as G. 

 confervoides is hard and tenacious. It also bears 

 some resemblance to the narrow variety of G. multi- 

 partita^ but is more cylindrical, and of a different 

 and much brighter colour." 



G. erecta. Grows in sandy rock-pools. Very 

 rare. Perennial. Bearing fiaiit in winter. Tor- 

 quay. Sidmouth. Gwyllyn Vase Bay, Falmouth, 

 near low water-mark, Mr. W. P. Cocks. Belfast 

 Bay. Port Ballantrae, North of Ireland. Round" 

 stone Bay, Galway. Orkney. Fronds numerous, 

 erect, one or two inches high, simple or once or 

 twice forked without ramuli. Colour and substance 

 about the same as in G. confervoides. Tubercles 

 globose, placed near the tips of the branches; 

 tetraspores in lanceolate receptacles. 



