KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. 



67 



mark ^). I have only to add here that of the Fncacefe and Laminariaceae the following 



species ought to be regarded as characteristic of this Flora: 



Himanthalia lorea ^), Pelvetia canaliculata, 



Halidrys siliquosa ^), Alaria esculenta ^), 



Ozothallia nodosa, » membranacea, 



Fucus serratus, Phyllaria derinatodea, 



vesiculosus, Laminaria saccharina, 



spiralis, » Clustoni, 



edentatus, » digitata, 



filiformis, Chorda filum. 



The relationship of the present Flora of the Norwegian Polar Sea to that of the 

 other parts of the Arctic Sea, the Northern Atlantic, and the northern Pacific, Avill be 

 seen from this table : 



The Norwegian Polar Sea has in common with the Greenlaud Sea 



" " with the White Sea and the western 



Murman Sea _ 



" " with the eastern Murman Sea 



» " with the Kära Sea 



" u with the Siberian Sea 



» " with the American Arctic Sea 



>i » with Baffin Bay 



>) » with the northern Atlantic 



» » with the northern Pacific 



3 



o 



CL, 



s 



o 

 o 



P 



Chlorophyllo- 

 phycese. 



o 



o 

 =r 

 B* 



o 



B 



Per cent 

 of the whole 



numher of 



species of the 



Flora. 



23(25) 



25(27) 



13 



1 



62(66) 



32(33) 'A 



28 



31 



9 







68 



35 » 



23 



21(24) 



13(14) 



1 



58(62) 



30(32) .. 



11 



9(10) 



4 







24(25) 



12 .. 



8 



6 



1 







15 



7,5 » 



9 



4 



2 







15 



7,6 » 



32(33) 



34(35) 



18 



1 



85(87) 



43,5(44,5) » 



69 



62 



29 



4 



164 



84 .. 



23(32) 



21(24) 



12 







56(68) 



29(35) » 



These figures clearly show that the Flora of the Norwegian Polar Sea has the 

 greatest affinity to that of the northern Atlantic. 



Thus it has been demonstrated by the examination now carried out, that this 

 Flora possesses of old a number of polar or arctic elements, that other elements have 

 been added partly by the forming of new species partly by immigrations from the 

 south, and that these younger elements, being considerably preponderant, determine 

 chiefly the general character of the present Flora. On this account, the NorAvegian 

 Polar Sea ought not to be comprehended within the region of the arctic Flora, but, 

 the greater part of the elements of its Flora being natives of the northern Atlantic 

 and having been transplanted from there to the north and north-west coast of Norway, 

 it should be referred to the region of the Atlantic Flora. Though the other parts of 

 the Arctic Sea certainly have no perfectly uniform Flora, their marine vegetation agrees 

 in these respects, viz. that a considerable number of its elements occur everywhere, that 



1) Cp. p. 14 follow. 



^) In the Southern part of the region. 



