THE MARINE BOTANIST. 87 



resembles small specimens of S. plumosa, but the 

 ramuli are far less close and regular, and the joints 

 of the stem very evident. Colour, a dark brown. 

 Substance rigid. Grows on other algse. 



0,S, S.ftisca, Sidmouth. Exmouth, Mrs. Gul- 

 son. St. Michael's Mount. Anglesea. Newton 

 Nottage, Worm's Head, and other places in Gower. 

 ^^ Tufts three to five inches long, varying in colour 

 fi'om a dull to a reddish brown." — Dillw, Conf. t. 

 95. Filaments slender, with very few ramuli. 



8. radicans. ^' In the sea, on sand - covered 

 rocks, in various parts of Great Britain and Ireland. 

 Dunmore. Waterford. Appin, Argyleshire. Orkney. 

 Torbay. Mount's Bay. Land's End. Ilfracombe. i^i/a- 

 menU rising fi^om a few decumbent fibres, forming 

 small tufts from half an inch to an inch in height. 

 Brandies few, scattered, and mostly simple. 

 Spores abundant, scattered over the branch. 

 Colour J a dull greenish-olive. Substance rigid." 



S. racemosa. Frith of Forth. ^^ Allied to he 

 last, but larger, and chiefly distinguished by its 

 racemose spores." 



