MARINE ALGAL VEGETATION 



13 



Ralfsia verrucosa (Aresch.) J. Ag., Reinke (59), Atlas T. 5 and 6, 

 figs. 1 — 13. 



E. Icel.. N. Icel., SW. Icel. 



Ralfsia deusta (Ag.) J. Ag., K. Rosenv., 61, p. 898. 



E. Icel., N. Icel., SW. Icel., S. Icel. 



Myrionema vulgare Thuret, Sauvageau, 66, p. 185. 



N. Icel.. SW. Icel. 



Myrionema Corunnae Sauvag., 66, p. 237. 



S. Icel. 



Myrionema globosum (Rke) Fosl., New or critical Norw. Algse, p. 

 17; Ascocyclus globosus Rke, 58, p. 46; Atlas (59) T. 17; Phycocelis 

 globosus K. Rosenv., 62, p. 86, figs. 19—20. 



E. Icel., N. Icel., NW. Icel., SW. Icel. 



Myrionema faerdense Borgs., 13, p. 424. 



SW. Icel. 



Myrionema Laminariae (K. Rosenv.), Dermatocelis Laminariae K. 

 Rosenv., 62, p. 89, fig. 21. 



SW T Icel. 



Ascocyclus islandicus H. Jonsson, 31, p. 149. 



N. Icel. 



Probably this species will prove to be identical with A. sphcerophorus 

 Sauv., cf. Jonsson, 31, p. 151 and Kylin. 1 The last-named author 

 writes that A. islandicus without doubt is identical with A. sphcerophorus, 

 but he gives no particulars as to the chromatophores of the last-named 

 species, I therefore must still regard the Icelandic plant as a distinct 

 species. 



Fam. Ectocarpaceae. 



Microsyphar Polysiphoniae Kuck., Beitrage (48) p. 29. 



NW. Icel., SW. Icel. 



Streblonema aecidioides K. Rosenv., 61, p. 894; 62, p. 80; Phyco- 

 celis secidioides Kuck., Bemerk. I (57), p. 234. 



E. Icel., N. Icel., SW. Icel. 



Streblonema Stilophorae Cr. var. ccespitosa K. Rosenv., 61, p. 892. 



Found in all parts of the coast. 



Pylaiella littoralis (L.) Kjellm.; Ectocarpus littoralis, Kuck., 48, 

 p. 7; Rosenv., 61, p. 881 ; Pylaiella littoralis, Pylaiella varia Kjellm., 

 35, p. 83. 



Common around the coast of Iceland. 



1 Harald Kylin, Zur Kenntnis der Algenflora der Norwegischen Westkuste, 

 Arkiv for Botanik, Bd. 10. No. 1, 1910. 



