Marine Algaz of Berwick-on-Tweed. 331 



DUMONTIA, Lamour. 



Dumontia filiformis (Fl. Dan.) Grev. 



Alg. Brit., p. 165, t. 17.— Ulva filiformis, Fl. Dan., t. 1480, 

 f. 2. 

 Descr. Dumontia filiformis, Harv., Phyc. Brit. 

 Fig. „ „ Harv., I.e. pi. 59. 



Exsicc. ,, ,, Wyatt, Alg. Daum., no. 31 ; Crouan, Alg. 



Finist., no. 208 ; Le Jol., Alg. Mar. Cherb., no. 5. 

 Syn. „ „ Ktz., Spec. Alg., p. 718; J. Ag., Spec. Alg. 



ii., p. 349; Id., Epicr. p. 257; Ktz., Tab. Phyc. XVI., t. 81; 

 Johnston, Fl. Berwk. II., p. 246. 

 Halymenia filiformis, Ag., Spec. Alg. I., p. 214; Ag., Syst. p. 245. 

 Dumontia incrassata, Lamour., Ess. p. 45. 

 Ulva pnrpurascens, Eng. Bot., t. 641. 

 Hab. On rocks and stones in pools between tide-marks usually near 

 half-tide level. March — Oct. Common along the whole coast. 



F. crisp ata, Grev. 



Alg. Brit., p. 165. 

 Syn. Dumontia filiformis, f. crispata, J. Ag., Spec. Alg. u., p. 350 ; 



Harv., I.e. ; Ktz., Spec. Alg., p. 719. 

 Hab. In pools near high-water mark where fresh-water enters the sea. 

 Near Dodd's Well. Eare. 



Family— G igartinacese. 



CHONDRUS, Stackh. 



(Carrageen, Irish Moss.) 



Chondrus crispus (Linn.) Lyngb. 



Hydr. Dan., p. 15. — Fucus crispus, Linn., Mant., p. 134. 

 Descr. Chondrus crispus, Harv., Phyc. Brit. 

 Fig. „ „ Harv., I.e. pi. 63. 



Exsicc. „ „ Wyatt, Alg. Daum., no. 118 and 119 ; Crouan, 



Alg. Finist., no. 189 ; Le Jol., Alg. Mar. Cherb., no. 164 and 224. 



Syn. „ „ J. Ag., Spec. Alg. n., p. 246 ; Id., Epicr. p. 178 ; 



Ktz., Spec. Alg., p. 735 ; Johnston, Fl. Berwk. II., p. 230. 



Sphaerococcus crispus, Ag., Spec. Alg. i., p. 256; HooTc., Fl. Scot. 



ii., p. 102 ; Grev., Fl. Edin., p. 294. 

 Fucus stellatus, Staclc., Ner. Brit., p. 53, t. 12. 

 Fucus laceratus, Stack., Ner. Brit., p. 50, t. 11. 

 Fucus patens, Good, et Woodw., in Linn. Trans, in., p. 173. 

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

 the year. Frnit Nov. — May. Very common all along the coast. 



