122 KJELLMAN, THE ALCyJE OF THE ARCTIC SEA. 



Localities: The Norwegian Polar Sea: Nordlander). All the localities reported by 

 Kleen for P. violacea, viz. Röst, Givasr, and Fleinv;cr, are probably to be referred to 

 this species. At least his coUections contain no P. violacea. 



Polysiphonia Schtibelerii Foslie. 



Aret. Havalg. p. 3. 

 Descr. Polysiplionia Schiibelerii Poslie, 1. c. 

 Fig. » » » t. 1, fig. 1 — 3. 



Remark on the species. The present .species approaches very nearly to P. JihriUosa, 

 as its author remarks himself, and can hardly be specifically distinguished from it. 

 Through the kindness of Mr Fo.slie I have had the advantage of seeing several spe- 

 cimens. These differ rather much in habit from P. fibrillosa, especially by their very 

 robnst mainstems and lateral axes of the first order, which condition however rnay be 

 partly caused by härd pressing in preserving. Until the plant has been raore closely 

 studied in nature, I think fit however to maintain it as a species. 



Habitat. It grows on sandy bottom mixed with stones, in 2 — 4 fathoms water, 

 fastened to small stones and shells, together with Ceramium and Punctaria. It bears 

 tetrasporangia in summer. 



Geogr. Distrib. It is known only from the Atlantic region of the Polar Sea. 



Locality: The Norwegian Polar Sea: Finmarken in Porsanger fjord. 



Polysiphonia elongata (Huds.) Harv. 



in HooK. Brit. Fl. p. 333; Conferva elongata Huds. Fl. Aiigl. p. 599. 



f. Lynghyei J. G. Ag. 



Spec. Alg. 2, p. 1004. 

 Descr. Polysiphonia elongata I. Lyngbyei J. G. Ag. 1. c. 

 Fig. Ceramium brachygonium Lyngts. Hydr. Dan. t. 36. 

 E.f.sic.c. Polysiphonia elongata Arescii. Alg. Scand. exsicc. N:o 60. 



Syn. Polysiphonia elongata J. G. Ag. Spetsb. Alg. Bidr. p. 11. 

 » » Kleen, Nordl. Alg. p. 12. 



Habitat. This plant occurs in the Norwegian Polar Sea on shelly and dead bottom 

 within the sublitoral zone in 8 — 15 fathoms water, bearing sporocarps and tetraspo- 

 rangia in Jiily and August. On the west coast of Sweden I have found it with such 

 organs at this season, but also earlier, in May and June. Judging by the specimens 

 in Kleen's herbarium, the plant on the coast of Nordlanden enters into its period of 

 rest towards the end of August. 



Geogr. Distrib. There exists a statement by J. G. Agardh that the present species 

 should have been brought home from Spitzbei^gen by the expedition of Torell 1861. 

 I have never seen it there myself nor anywhere else in the Arctic Sea. In the southern 

 part of the Norwegian Polar Sea it has been found by Kleen. 



Localities: The Norwegian Polar Sea: Nordlanden at Giva3r isles and Fleinva^r isles. 



The Greenland Sea: the coast of Spitzbergen, the particular place not being stated. 



