202 KJELLMAN, THE ALGiE OF THE ARCTIC SEA. 



Fucus spiralis L. 



Spec. Plant. 2, p. 1159, sec. Aiiesch. Fuc. et Pycnoph. p. 106. 

 Descr. Fucus Sherardi a spiralis Aresch. 1. c. 

 Fig. » spiralis Fl. Dan. t. 286; non bona. 



Exsicc. n platycarpus Aresch. Alg. Scand. cxsicc. N:o 54. 



f. borealis nob. 



f. parvula, vix ultra 15 cm", älta, vulgo minor; segmentis plurimis ad costas reductis, supretnis abbreviatis, 

 plus minus crispis vel spiraliter tortis. 



Syn. Fucus Sherardi Kleen, Nordl. Alg. p. 29. 

 » spiralis Gunn. Fl. Nerv. 2, p. 64. 

 « vesiculosus / spiralis Wg. Fl. Lapp. p. 490. 



Hahitat. In the Polar Sea this species, wherever it has been met with hitherto, 

 always occurs in the litoral zone, usually at its upper margin, occupying a narrow 

 börder below Pelvetia canaliculata. It is certainly gregarious, like several other species 

 of Fucus, but never occurs, at least not on the north coast of Norway, in so great 

 numbers as some of these. I never found it but on exposed coasts. During the sum- 

 mer, even to the month of October, it bears receptacles in the Norwegian Polar Sea. 



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

 attaining its maximum of frequency in its southern part. The most northern place 

 where it has been found is Gjesva^r in Finmarken about Lat. N, 71°. 



Localities : The Nonr,egian Polar Sea: Nordlanden, common; Tromsö amt, pretty 

 abundant at several places in the neighbourhood of Tromsö; Finmarken: Gjesvasr and 

 the south coast of Magerö, more local and scarce. 



Fucus evanescens Ag. 



Spec. Alg. 1, p. 92. 



f. pergrandis Kjellm. 



Descr. Fucus evanescens f. pergrandis K.tellm. Spetsb. Thall. 2, p. 3. 



Syn. Fucus evanescens, grandifrons J. G. Ag. Grönl. Alg. p. 110; sec. spec. 



f. typica Kjellm. 



Descr. Fucus evanescens f. typica Kjeli-m. 1. c. p. 3 — 4. 



» « J. G. Ag. Spetsb. Alg. Till. p. 40—41. 



Syn. Fucus evanescens normalis J. G. Ag. Grönl. Alg. p. 110; sec. spec. 



f. angusta Kjellm. 



Descr. Fucus evanescens f. angusta Kjellm. Algenv. Murm. Meer. p. 27. 



Syn. Fucus evanescens f. clongata, angusta et f. minor, angusta .T. G. A g. Grönl. Alg. p. 110. 



f. nana Kjellm. 



Descr. Fucus evanescens f. nana ICjellm. Spetsb. Thall. 2, p. 4. 



f. bursigera J. G. Ag. (Kjellm.) 



Spetsb. Thall. 2, p. 4. Fucus bursigerus J. G. Ag. Spetsb. Alg. Till. p. 41. 

 Descr. et Fig. Fucus bursigerus J. G. Ag. 1. c. et t. 3. 



