KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. wN:0 5. 249 
Ralfsia verrucosa (Arescu.) J. G. Aa. 
Spec. Alg. 1, p. 62. Cruoria verrucosa Arescu. Alg. Pugill. p. 264. 
Descr. Ralfsia verrucosa J. G. Aa. |. ec. 
Fig. » » Kurz. Tab. Phyc. 9, t. 77. 
Syn. Ralfsia verrucosa Kieen, Nordl. Alg. p. 33; ex parte. 
Habitat. It is litoral, attached to stones or shells. It prefers sheltered bays, 
but grows also on exposed coasts. In the Polar Sea it lives scattered in small numbers 
and has only been found sterile here. 
Geogr. Distrib. Known only from the Norwegian Polar Sea. Its northernmost 
place of occurrence is the south coast of Mageré about Lat. N, 71°. 
Localities: The Norwegian Polar Sea: Nordlanden, common according to KLEEN; 
Finmarken scarce on the south coast of Magerd. 
Fam. CHORDARIACE (Aa.) Fart. 
New. Engl. Alg. p. 83; Ag. Syst. Alg. p. XXXVI; lim. mut. 
Gen. Chordaria (Ac.) J. G. Ac. 
Alg. Syst. 2, p. 62; Ac. Syn. Alg. p. XII; lim. mut. 
Chordaria flagelliformis Mott. 
Fl. Dan. t. 650. 
f. typica. 
Descr. Chordaria flagelliformis J. G, Ac. Spec. Alg. 1, p. 66; excl. var. 
Fig. » » Harv. Phye. Brit. t. 111. 
Exsice. » » Arescu. Alg. Scand. exsicc. N:o 97. 
f. chordaformis KsELuM. 
Spetsb. Thall. 2, p. 28. 
Descr. et Fig. Chordaria flagelliformis f. chordformis Kyetum. |. ec. et t. 1, fig, 13—15. 
f. ramusculifera KsELLM. 
PG. peo ade 
Descr. et Fig. Chordaria flagelliformis f. ramusculifera KyeLim. |. c. et t. 1, fig. 10—12. 
Syn. Chordaria divaricata Gost, Algenfl. Weiss. Meer. p. 70, huie forme proxima. 
f. subsimplea KsELuM. 
Descr. et Fig. Chordaria flagelliformis f. subsimplex Kyetum. | c. et t. 1, fig. 16—18. 
Syn. Chordaria divaricata Gos1, Algenfl. Weiss. Meer. p. 69; sec. spec. 
» flagelliformis Argscu. Phye. Seand. p. 366. 
» » J. G. Ac. Spetsb. Alg. Progr. p. 2; Bidr. p. 11; Gronl. Alg. p. 110 
» » Croat, Fl. Dise. p. 458. 
» : » Dickie, Alg. Cumberl. p. 237; Alg. Sutherl. 1, p. 141; Alg. Nares p. 7 
» » Gost, |. ec. p. 70. 
K. Vet. Akad. Handl. Band. 20. N:o 5. 32 
