254 Marine Algce of Berwick- on-Twud. 



Hab. In shallow sandy pools near high-water mark. Not uncommon. 

 Berwick Bay. Greenses. Rocks north of Sharper Head. 



A more slender, flaccid species than Chatomorpha melagonium, 

 and always more or less tufted. 



Chjetomorpha Linum, (Roth.) Kt%. 



Phyc. Germ., p. 204. — Conferva Linum, Roth, Cat. Bot. i., 

 p. 174. 



Descr. Conferva Linum, Haw., Phyc. Brit. 



Fig. „ „ Harv., I.e. pi. 150, A. 



Exsicc. ,, „ Crouan, Alg. Mar. Finist., no. 353 ; Areschoug, 



Alg. Scand. Exsicc, no. 183. 

 Syn. Chastomorpha herbacea, Kfz., in Kohenacker's Meeralgen., 

 no. 355. 

 Conferva Linum, Ag., Syst., p. 97 ; Lyngb., Hydr. Dan., p. 147. 



t. 50. 

 Conferva capillaris, Hud*., PI. Aug., p. 598; Liglttf., PI. Scot., 



p. 988 ; Johnston, Fl. Berwk. a., p. 253. 

 Conferva crassa, Ag., Syst., p. 99, (nou Conferva Linum, Alg. 

 Danmon., no. 220.) 

 Hob. Prostrate on the mud and muddy sand, along the shore at Fenham 

 Flats, usually near half -tide level. Not uncommon. July — Oct. 

 A coarse, rigid species, the filaments intricately twisted together 

 into dense masses, in this respect differing from the two preceding 

 species. It forms layers, often many yards in circumference which 

 may be readily separated by the hand almost to any extent. 



Ch^tomorpha tortuosa, (Dillw.) Kleen. 



Nordl. Alg., p. 45. — Conferva tortuosa, Dillw., Brit. Conf. 

 Syn. t. 46. 

 Descr. Conferva tortuosa, Harv., Phyc. Brit. 

 Fig. „ „ Harv., I.e. pi. 54 a. and B. 



Exsicc. Conferva implexa, Wyatt, Alg. Danmon., no. 142. 

 Syn. „ ,, et Conferva tortuosa, Harv., Phyc. Brit. pi. 



54, A et B 

 Rhizoclonium torfcuosum, Ktz., Spec. Alg., p. 384 ; Farlow, Mar. 



Alg. New. Bng., p. 49. 

 Chaetomorpha tortuosa, Kjellm., Alg. Arctic Sea. 

 Conferva tortuosa, Aresch., Phyc. Scand., p. 433. t. 3, fig. G ; Id., 



Exsicc, no. 29. 

 Conferva intricata, Grev., Fl. Edin., p. 315. 

 Bangia Johnstoni, Grev., in Johnston, Fl. Berk, n., p. 260. 



