354 Marine Algce of Berwick-on-Tiveed. 



Plocamium asparagoides, Lamour., Ess., p. 50. 

 Ceramium asparagoid.es, Roth, Cat. Bot. in., p. 110. 

 Hab. Cast ashore from deep-water. Jane — Aug. Rare. Berwick 

 Bay. 



LAURENCIA, Lamour. 



Laurencia nYBMDA (De Caud.) Lenorm. 



in Dubi/, Bot. Gall., p. 951.— Fucus hybridus, De Cand., 

 Fl. Fran, n., p. 30. 

 Descr. Laurencia csespitosa, Harv., Phyc. Brit. 

 Fig. „ „ Harv., I.e. pi. 286. 



Exsivc. „ „ Crouan, Alg. Finist., no. 278. 



Laurencia pinnatifida, var. angusta, Wyatt, Alg. Danm., no. 162. 

 Syn. „ „ Grev., Alg. Brit., p. 109 ; Hook., Br. Fl. II., 



p. 296. 

 Laurencia hybrida, Ktz., Spec. Alg., p. 856 ; J. Ag., Spec. Alg. n., 

 p. 761 ; Id., Epicr., p. 655 ; Le Jol., Alg. Mar. Cherb., no. 10 ; 

 Id., Liste, p. 148. 

 Laurencia caespitosa, Lamour., Ess., p. 43 ; Harv., Man., p. 98. 

 Chondria hybrida, Chauv., Alg. Norm., no. 40. 

 Hab. On rocks and stones between tide-marks. Common. Berwick 

 Bay, Burnmouth, Scremerston, Holy Island, and elsewhere 

 along the coast. 

 This species is mentioned b}- Johnston in his Flora of Berwick- 

 on-Tweed as " a variety (of L. pinnatifida) of a yellowish colour, 

 with a cylindrical frond, the branches simple, shoit and crowded 

 towards the summit," which "grows in dense erect tufts in 

 shallow pools much exposed to the sun." 



Laurencia pinnatifida (Gmel.) Lamour. 



Ess., p. 42. — Fucus pinnatifidus, Gmel., in Linn., Syst. Nat., 

 p. 1385. 

 Descr. Laureucia phmatihda, Harv., Phyc. Brit. 

 Fig. „ „ Harv., I.e. pi. 55. 



Exsicc. ,, „ Wyatt, Alg. Danm., no. 113 ; Crouan, Alg. 



Finist., no. 277 ; Le Jol., Alg. Mar. Cherb., no. 171. 

 Syn. „ ,. Ktz., Spec. Alg., p. 856 ; /. Ag., Spec. 



Alg. ii., p. 764; Id., Epicr., p. 656 ; Johnston, Fl. Berw. n., p. 

 231. 

 Chondria pinnatifida, Ag., Spec. Alg. i., p. 337 ; Ag., Syst., p. 201 ; 

 Hook., FL Scot, ii., p. 105. 

 Hab. On rocks between tide-marks and in deep-water. All the year. 

 Fruit Nov. — May. Common along the whole coast. 



