Marine Algai of Berwick-on-Tiueed. 295 



f. vermicularis (Griff.) Harv. 

 Phyc. Brit., pi. 194, var. B. 



Descr. Asperococcus echinatus, b. vermicularis, Harv., I.e. ; J. Ag., Spec. 



Alg. i., p. 76. 

 Exsicc. ,, ,, Le Jol., Alg-. Mar. Chert)., no. 181. 



Asperococcus vermicularis, Wyatt, Alg. Danm., no. 207. 

 Si/n. Encoelium echinatuui b. setaceum, Ktz., Spec. Alg., p. 552. 

 Hob. On AlgEe in shallow pools between tide-marks. Common. 



Berwick Bay, etc. 

 A smaller plant than the type with filiform setaceous twisted 

 fronds. It is almost as common as, and is frequently found 

 growing on the same host plant with, the typical form. 



Family — L aminariaceee. 



CHORDA, Stackh. 

 (Sea Whip-thongs ; Sea-Laces ; Deadmen's-Laces.) 



Chorda pilum (Linn.) Stackh. 



Ner. Brit., p. xvi. — Fucus filum, Linn., Spec. Plant, p. 1 126. 

 "Descr. Chorda filum, Harv., Phyc. Brit. ; Farlow, Mar. Alg. 

 Fig. ,, „ Harv., I.e. pi. 107 ; Farlow, Mar. Alg. New Eng., 



PI. vi., fig. 1. 

 Exsicc. „ „ Wyatt, Alg. Danm., no. 159 ; Le Jol., Alg. Mar. 



Cherb., no. 45 ; Aresch., Alg. Scand. Exs., no. 92. 

 Scytosiphon filum, Orouan, Alg. Finist., no. 79. 

 Syn. „ „ C. Ag., Spec. Alg. i., p. 161 ; Ag., Syst., p. 257 ; 



Grev., PI. Edin., p. 288 ; J. G. Ag., Spec. Alg. i., p. 126. 

 Chordaria filum, Ag., Syn., p. 13; Hook., Fl. Scot., part 2, p. 98. 

 Chorda filum, Ktz., Spec. Alg., p. 548 ; Annales des Sciences, Ser. 



3, vol. xiv., PI. 29, figs. 5-10 ; Johnston, Fl. Berwk. II., p. 247. 

 Fucus filum, Light/., Fl. Scot., p. 963 ; Eng. Bot,, t. 2487. 

 Hah. On rocks and stones in sandy pools near low-water mark. April 

 — Dec. Common. Berwick Bay, Burnmonth, Holy Island, and 

 elsewhere on the coast. 



Chorda tomentosa, Lyngb. 

 Hydr. Dan., p. 74, t. 19. 

 Descr. Chorda tomentosa, Lyngb., I.e. 



Fig. „ „ Crouan, Flor. du Finist., pi. 29, gen. 186. 



Exsicc. „ „ Aresch., Alg. Scand. Exsicc. ser. nov., no. 93. 



Scytosiphon tomentosum, Crouan, Alg. Mar. Finist., no. 79. 



