Marine Alguu of Berwiok-on-Tweed. 261 



f. uncialis, Thuret, 



in Le JoL, Liste Alg. Mar. Cherb., p. 63. 

 Descr. Cladophora uncialis, Haw., Phyc. Brit. 

 Fig. „ „ I/arv., I.e. pi. 207. 



Exsicc. ,; ,, Le JoL, Alg. Mar. Cherb., no. 105. 



Couferva uneialis, Wyatt, Alg. Damn., no. 146. 

 Syn. „ „ Fl. Dan. t. 771, fig. 1 ; Ag., Sysfc., p. 111. 



Spongomorpha uneialis, Ktz., Phyc. Gen., p. 273 ; Id., Tab. 

 Phyc. iv. t. 82. 

 • Hab. On sand-covered rocks between tide-marks. May — Aug. Com- 

 mon. Berwick Bay. Coves, Holy Island. 

 A small plant forming globose bright green tufts on Algsc or 

 rocks. It fades very much in the Herbarium. The variety 

 uneialis is much more common at Berwick than the typical form, 

 which is always small and stunted with us. 



Subgenus— EUOLADOPHORA, Farlow. 



Cladophora rupestris (Linn.) Ktz. 



Phyc. Gen., p. 270. — Conferva rupestris, Linn., fSp. PI., p. 

 1167. 

 Descr. Cladophora rupestris, II arc, Phyc. Brit ; Farlow, Mar. Alg. New 



Eng., p. 51. 

 Fig. „ „ Ilarv., I.e. pi. 180. 



Exsicc. ,, ,, Le Jol., Alg. Mar. Cherb., no. 47 ; Crourin, 



Alg. Fiuist., no. 369. 

 Conferva rupestris, Wyatt, Alg. Danmon., no. 95. 

 Syn. „ „ Crouan, Fl. du Finist., p. 127; Johnston, Fl. 



Berwk. u., p. 255. 

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

 Everywhere common along the coast. 



Cladophora albida (Huds.) Ktz. 



Phyc. Gen., p. 267. — Conferva albida, Huds.. Fl. Ang., p. 595. 



f. refract a, Thuret. 



in Le Jol., Liste Alg. Mar. Cherb., p. 60. 

 Descr. Cladophora refracta, Harv., Phyc. Brit. 

 Tig. „ „ Harv., I.e. pi. 24. 



Exsicc. Conferva refracta, Wyatt, Alg. Danmon., no. 228 ; Cocks A.W, 



Fascic, no. 89. 

 Hab. In rock pools near low-water mark. Very rare. Berwick Bay. 



