270 Marine Algce of Berwich-oii-Tweed. 



Syn. Desmia ligulata, Lyngb., Hydr. Dau. p. 33, t. 7. 



Sporochnus ligulatus, Ag., Sp. Alg. i., p. 158 ; Ag., Syst., p. 261 ; 



Grev., FL Edin., p. 287- 

 Laminaria ligulata, Hook., PL Scot., part n., p. 99. 

 Desmarestia lignlata, J. Ag., Spec. Alg. i.. p. 169 ; Ktz., Spec. 

 Alg., p. 572 ; Ktz., Phyc. Gen., p. 343 ; Harv., Man., p. 23. 

 Hob. On rocks and stones in deep water. Occasionally cast ashore at 

 Holy Island. 



Family— D ictyosiphonacese. 

 DICTYOSIPHON, Grev. 



Dictyosiphon fceniculaceus (Huds.) Grev. 



Alg. Brit., p. 56, t. 8. — Conferva fceniculacea, Huds., Fl. 

 Angl. ii., p. 594. 

 Deser. Dictyosiphon fceniculaceus, Han:., Phyc. Brit. 

 Fig. ,, ,, Harv., I.e. pi. 326. 



Exsicc. ,, „ Wyutt, Alg. Danmon., no. 205 ; Le 



Jol., Alg. Mar. Cherb., no. 86. 



Syn. Scytosiphon fceniculaceus, Ag., Sp. Alg. i., p. 164 ; Ag., Syst., p. 258. 



Dictyosiphon fceniculaceus, J. Ag., Spec. Alg. i., p. 82 ; Aresch., 



Obs. Phyc. in., p. 30; Aresch., Phyc. Scand., t. 7; Ktz., Spec. 



Alg., p. 485 ; Le Jo!., Liste, p. 72 ; Johnston, Fl. Berwk. n., p. 



246. 



Hob. On rocks and stones in pools between tide-marks. April — Oct. 



Common. Berwick Bay, Burnniouth, Scremerston, Holy Island. 



DlCTYOSIPHOX hippuroides (Lyng.) Ktz. 



Tab. Phyc. vi., p. 19. — Scytosiphon hippuroides, Lyngb., 

 Hydr. Dan., p. 63, t. 14b. 

 Descr. Dictyosiphon hippuroides, Aresch., Obs. Phyc. III., p. 26. 

 Exsicc. ,, „ Aresch., Alg. Scand. Exsicc, nos. 105 



et 320; Holmes, Alg. Brit. Bar., no. 5. 

 Fig. Dictyosiphon fceniculaceus, var. a., Aresch., Phyc. Mar. Scand., 



t. 6a and B. 

 Syn. Chordaria flagelliformis, var. B and G, Agardh., Spec. Alg., pp. 66 



et67. 



Hab. Epiphytic on Chordaria flagelliformis, in pools near low-water 



mark. May — Nov. Common. Berwick Bay, Burnniouth, 



Holy Island. 



A coarser, stronger growing plant than Dictyosiphon fceniculaceus, 



often a foot or more long. In habit it somewhat resembles 



