248 Marine Alga- of B enrich-on- Tweed. 



Enteromorpha intestinalis var. Cornucopias, Ktz., Spec. Alg., p. 



478 (non Phycoseris Cornucopias, Ktz., Tab. Phyc. VI. t. 30 ; nee. 



Enteromorpha Cornucopias, Carm in Harv., Phyc. Brit. pi. 304.) 



Hub. Between tide-marks. Also in the Tweed. All the year. Very 



common. 



Many of the innumerable varieties of this very variable plant 

 are common at Berwick. In the brackish water at the mouth of 

 the Tweed it attains a large size, specimens a yard long being 

 far from uncommon. It sometimes floats like a scum on the 

 surface of the water, the inflated fronds bearing a disgusting 

 resemblance to the intestines of some animal or to a string of 

 "black puddings," a circumstance which suggested the specific 

 name, as well as the local one of " water puddings." 



Enteromorpha Linza (Linn.) J. Ag. 



Till. Alg. Syst., p. 134. — Ulva Linza Linn. Spec. Plant, 

 ii., 1163. 

 Descr. Ulva Linza, Harv., Phy. Brit. 

 Fig. ,, „ Harv., I.e. pi. 39. 



Exsicc. ,, ,, Wyatt, Alg. Danmon., no. 164. 

 Syn. Enteromorpha Linza, Hauek, Meeresalg., p. 428. 

 Ulva Linza, Ag. Spec. Alg., p. 412. 



Ulva Enteromorpha var. lanceolata, Le Jol. Liste, p. 42. 

 Phycoseris lanceolata, Ktz., Spec. Alg., p. 475 ; Id. Tab. Phyc. VI. 



t. 17. 

 Phycoseris crispata, Ktz., Spec. Alg., p. 476; Id. Tab. Phyc. vi. 



t. 17. 

 Phycoseris smaragdina, Ktz., Spec. Alg., p. 476 ; Id. Tab. Phyc. 



vi. t. 19. 

 Phycoseris olivacea, Ktz., Spec. Alg., p. 476; Id. Tab. Phyc. vi. 



t. 19. 

 Phycoseris planifolii., Ktz., Spec. Alg., p. 476 ; Id. Tab. Phyc. VI. 

 t. 15. 

 Hab. Tn rocky pools between tide-marks. May — Aug. Not uncommon. 

 Greenses, Sharper Head, Scremerston, and Holy Island. 



The long ribbon-like fronds of this species, which are usually 

 more or less crisped at the margin,. are either flat or but slightly 

 inflated, in this respect differing from those of the preceding 

 species. Le Jolis and Farlow unite under the single species 

 Ulva Enteromorpha the following species of Phycologia Britannica, 

 Enteromorpha intestinalis, Enteromorpha compressa and Ulva Lima. 

 I have followed the majority of writers on the subject in regarding 

 them as distinct species. In any case they are well marked and 

 easily recognised forms. 





