306 Marine Algce of Berwick -on-T weed. 



Syn. Ascophylla laevigata, Staclch., Tentam., p. 66 (1809). 



Ozothallia vulgaris, Dene., in An. Sc. Nat. 1845, p. 13 ; Ktz., Spec. 



Alg., p. 591. 

 Physocaulon nodosum, Ktz., Phyc. Gen., p. 352. 

 Fucus nodosus, Grev., Fl. Edin., p. 284 ; Hook., Fl. Scot. pt. n., p. 

 94; Light/., Fl. Scot, n., p. 918; Johnston, Fl. Ber. n., p. 222. 

 Fucodium nodosum, J. Ag., Spec. Alg. i., p. 206. 

 Hab. On rocks and stones from high-water mark to half -tide level. All 

 the year. Fruit Winter. Common all along the coast. 



HIMANTHALIA, Lyngb. 



(Sea thongs, Button wrack, Sailors' buttons.) 



Himanthalia lorea (Linn.) Lyngb. 



Hydr. Dan., p. 36, t. 8. — Fucus loreus, Linn., Syst. Nat. n., 

 p. 716. 

 Descr. Himanthalia lorea, Haw., Phyc. Brit. 

 Fig. „ „ Saw., I.e. pi. 78. 



Exsicc. ,, „ Wyatt, Alg. Danm., no. 3 ; Crouan, Alg. Mar. 



Finist., no. 97; Le Jol., Alg. Mar. Cherb., no. 72; Hohenack, 

 Alg. Mar. sice, no. 166. 

 Syn. „ „ J. Ag.,Spec. Alg. i., p. 196; Ktz., Spec. Alg., p. 



587 ; Grev., Alg. Brit., p. 20, t. 3 ; Johnston, Fl. Ber. n., p. 224. 

 Fucus longo angusto crassoque folio, Raii., Syn., p. 43, n. 11. 

 Hab. Common on exposed rocks near low-water mark. All the year. 

 Fruit Summer and Autumn. Berwick Bay, Greenses, Burn- 

 mouth, Scremerston, and elsewhere along the coast. 



Order VI.— DICTYOTACE^l. 



DICTYOTA, Lamour. 



Dictyota dichotoma (Huds.) Lamour. 



Ess., p. 58.— Ulva dichotoma, Huds., Fl. Angl., 2nd Edit., 

 p. 568, 1st Edit., p. 476. 

 Descr. Dictyota dichotoma, Harv., Phyc. Brit. 

 Fig. ,, „ Haw., i.e., pi. 103. 



Fvsicc. „ ,, Wyatt, Alg. Danm., no. 10 ; Crouan, Alg. 



Fmist., nos. 68 et 69 ; Rabenh., Alg. Eur., no. 1318. 

 Syn. ,, ,, J. Ag., Spec. Alg. I., p. 92. 



Zonaria dichotoma, Ag., Spec. Alg. i., p. 133 ; Hook., Fl. Scot, u., 



p. 90 ; Grev., Fl. Edin., p. 297. 

 Dichophyllum vulgare, Ktz., Phyc. Gen., p. 337, t. 22. 

 ,, dichotomum, Ktz., I.e., p. 338. 



,, implexum, Ktz., I.e., p. 338. 



Hah. On rocks and Algas at low-water mark and below. Very rare. 

 Berwick Bay, near the Coves. 



