KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. 25] 
The White Sea: f. ramusculifera. 
The Siberian Sea: (f. typica and f. ramusculifera) rare and so dwarfed as to be almost 
unrecognizable at Irkaypi and Pitlekay. 
Baffin Bay: Cumberland Sound; the west coast of Greenland probably common; 
found at Nanortalik, Fiskernws, Sukkertoppen, Hunde Islands, Godhavn, Egedesminde, 
Rittenbenk, Melville Bay, Whale Islands, Discovery Bay. 
Gen. Castagnea (Der. et Sor.) J. G. Aa. 
Alg. Syst. 2, p. 33; Ders. et Sor. Mem. phys. Alg. p. 56, sec. J. G. AG. 1. e. 
Castagnea divaricata (Ac.) J. G. Ag. 
l. c. p. 37. Chordaria divaricata Ac. Syn. Ag. p. 12. 
Descr. Castagnea divaricata J. G. Ac. 1. ec. 
Fig. Mesogloia divaricata Kurz. Tab. Phye. 8, t. 8. 
Eesicc. Chordaria divaricata Arescu. Alg. Scand. exsicc. N:o 98. 
Syn. Chordaria divaricata Kueen, Nordl. Alg. p. 39. 
Locality. It is uncertain whether this species really lives in the Polar Sea. A 
specimen furnished with sporangia was found in August washed ashore at Bodo in 
Nordlanden, accordingly at the southern limit of the Polar Sea. Most probably it has 
grown in the neighbourhood, and the species may thus be regarded as belonging to 
the Flora of the Polar Sea. 
Gen. Eudesme J. G. Ac. 
Alg. Syst. 2, p. 29. 
5 
Eudesme virescens (Carm.) J. G. Ag. 
J. c. 31. Mesogloia virescens Carm. in Hook. Brit. Fl. 2, p. 387. 
Descr. FWudesme virescens J. G. AG. |. c. 
Mesogloia virescens » Spec. Alg. 1, p. 56. 
Fig. » » Harv. iNer: Ama i,t 10; jfie. b: 
Exsice. Castagnea virescens Arescu. Alg. Scand. exsice. N:o 315. 
Syn. Castagnea virescens Gobir, Algenfl. Weiss. Meer. p. 72. 
» » KLEEN, Nordl. Alg. p. 35. 
» Zoster » » » » » 
Hlabitat. It grows sometimes in the upper part of the sublitoral zone, usually 
within the litoral zone, partly on stones or alge above low-water mark, partly in rock- 
pools below that line. It occurs scattered both on exposed and on sheltered coasts. 
It is found with zoosporangia in the Norwegian Polar Sea during the whole summer 
to the middle of September, 
