250 KJELLMAN, THE ALGiE OF THE AKCTIC SEA. 



Syn. Chordaria flagelliformis Kjellm. Vinteralgv. p. 64; Spetsb. Tliall. 2, p. 28; Algenv. Murm. Meer. p. 41. 



» » Kleen, Nordl. Alg. p. 34. 



» » LiNDBL. Bot. Not. p. 157. 



» » Nyl. et Ssel. Herb. Fenn. p. 73. 



') » Post, et Rupe. III. Alg. p. II. 



» » Zeller, Zweite d. Polarf. p. 84. 



Pucus flagelliformis Wg. PI. Lapp. p. 505. 



Remark on the synonymy. The alga set down by Gobi 1. c. as Ch. divaricata, 

 judging by the specimen kindly communicated to me by Gobi, is not of that species, 

 but a Ch. flagelliformis. It is most nearly related with that form of this species which 

 I have called f. ramusculifera, though by its slenderness and loose consistency it approaches 

 also f. suhsimplex. I have found a form very nearly coinciding with that collected 

 by Gobi, in the eastern part of the Murman Sea, and in my account of the marine 

 vegetation of that sea I have recorded it as an intermediate form between the two 

 just-mentioned ones. 



Habitat. From the Norwegian Polar Sea only the typical form of the present 

 species is known. It occurs here sometimes litoral, sometimes sublitoral, fastened 

 partly to other algae, as Halosaccion ramentaceum, Fucus serratus a. o., partly to stones. 

 In other parts of the Polar Sea I have always found it within the sublitoral zone, but 

 in the upper part of it. It is met with both on exposed and sheltered coasts and in 

 the Norwegian Polar Sea is occasionally gregarious. The typical form on the north coast 

 of Norway bears zoosporangia during the whole summer, at least to the middle of 

 September. At Spitzbergen I have found this form provided with such organs in August, 

 and on the west coast of Novaya Zemlya at the end of June and the beginning of 

 July. The form chordceformis has been taken with zoosporangia at Spitzbergen in January, 

 February, May, July, August, and December, at the west coast of Novaya Zemlya 

 during the earlier part of July; f. ramusculifera on the north coast of Spitzbergen in 

 July and August, f. subsimplex at Spitzbergen at the end of August and the commence- 

 ment of September. 



Geogr. Distrib. The present species has been found in the Arctic Sea proper at 

 several places at very different longitudes, but nowhere in any considerable numbers. 

 Its maximum of frequency is situate to the south of that region. The most northern 

 point where it has been taken is Discovery Bay on the west coast of Greenland, Lat. 

 N. 81° 41'. 



Localities: The Norwegian Polar Sea: (f. typica) Nordlanden common and abundant; 

 Finmarken common and pretty abundant, as at Maaso, Gjesva^r, the south coast of 

 MagerS, and Talvik. 



The Greenland Sea: the east coast of Greenland at Sabine Isle (?); the west and 

 north coasts of Spitzbergen, local and scarce. All the forms recorded have been found 

 at Spitzbergen. 



The Murman Sea: the coast of Russian Lapland (f. typica), probably common; 

 the west coast of Novaya Zemlya (f. typica, f. chordceformis, and a form intermediate 

 between f. ramusculifera and f. subsimplex) rather generally dispersed, but scarce. 



