210 KJELLMAN, THE ALGiE OF THE ARCTIC SEA. 



Fucus distichus L. 

 Syst. Nat. Ed. 12, 2, p. 716. 



f. rohustior J. G. Ag. 



Spetsb. Alg. Till. p. 37. 

 Descr. Fucus distichus a. robustior J. G, Ag. 1. c. 

 Fig. » » KuTZ. Tab. Phyc. 10, t. 15, fig. d. 



f. tenuior J. G. Ag. 



1. c. 

 Descr. Fucus distichus b. tenuior J. G. Ag. 1. c. 

 Fig. » » TuRN. Hist, Fuc. t. 4. 



Syn. Fucus ceranoides Wg. Fl. Lapp. p. 490; ex parte, fide syn. 



» distichus J. G. Ag. 1. c. non Kleen, Nordl. Alg. p. 30 nec. Gobi, Algenfl. Weiss. Meer. p. 52. 



Remark on the species. By the examination I have made of the Fuci of northern 

 Norway I feel justified in adopting J. G. Agardhs opinion that the alga named by 

 him F. difitichufi ought to be considered a valid species. Kleen has denied its being 

 different from F. jiliforviis and F. linearis; but he has apparently never known that 

 form which J. G. Agardh understands by the name of F. distichus. At least it is not 

 to be foiind in his collections, forms of F. jiliformis passing there under that name. 

 Nor does Gobi seem to have niet with it in those collections from the White Sea and 

 the western Murman Sea which he has examined. On the coast of Norway it is in 

 my experience much more rare than F. jiliformis, from which it is pretty easily di- 

 stinguished on closer examination. 



Habitat. The same as the preceding species. On the north coast of Norway 

 it still bears receptacles, though rather scarce, at the end of July. In August it was 

 only found sterile. June and the beginning of July seem to be its proper fruiting 

 season here. 



Geogr. Distrib. Known only from the Norwegian Polar Sea. The northernmost 

 point where it has been found is Gjesvajr about Lat. N. 71°. 



Localities: The Norwegian Polar Sea: Nordlanden at Bodö (f. robustior) scarce; 

 Finmarken (f. tenuior): Maasö and Gjesva^r, at both places rather local and not abundant. 



Gen. Pelvetia Dcsne et Thur. 



Rech. Fuc. p. 12. 



Pelvetia canaliculata (L.) Dcsne et Thur. 



1. c. Fucus canaliculatus L. Syst. Nat. Ed. 12, 2, p. 716. 



Descr. Fucodiura canaliculatutn J. G. Ag. Spcc. Alg. 2, p. 204. 



Fig. Piicus canaliculatus Harv. Phyc. Brit. t. 229. 



Exsicc. » » Aresch. Alg. Scand. exsicc. N:o 202. 



