THE MARINE BOTANIST. 185 



lata, the frond distorted and bent, as if broken at 

 the tubercles. 



0. S. G, multipartita. Grows on rocks or 

 stones in muddy places, chiefly estuaries 3 near low- 

 water, and at a greater depth. Very rare. An- 

 nual. August and September. Coast of Devon ; 

 dredged in Salcombe Bay. Shore under Taif s 

 Hill, Plymouth. In the Sound and Whitsand Bay, 

 near Plymouth. 



" Frond flat, tender, semi-transparent, brittle, 

 dull purplish-red, deeply cleft in an irregularly 

 dichotomous or palmate manner ; the branches 

 linear, wedge-shaped ; apices acute ; tubercles coni- 

 cal, very prominent, scattered over the segments.'* 

 — Phyc, Brit. The frond in this is flat, variable 

 in breadth, and from four to twelve inches long 5 

 in aspect it very much resembles some of the Rho- 

 dymenia, but may be known by its very prominent 

 tubercles. 



G. compressa. Thrown up from deep water. 

 Very rare. Sidmouth, Mrs. Griffiths. Exmouth, 

 Mrs. Gulson. Jersey, Miss Turner. Annual. August. 



