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



69 



vegetation agrees with that of the Greenland and the Kära Seas. Thus the whole of 

 that considerable region of the Arctic Sea, which is coinposed of the Greenland, the 

 Murman, the White, and the Kära Seas, and probably the Spitzbergen Sea, would 

 constitute one division of the arctic Flora, agreeing in the principal characters of its 

 vegetation. Spitzbergen being situated almost at its centre, this province of the arctic 

 Flora may be called the province of Spitzbergen, its marine Flora the Spitzbergen ma- 

 rine Flora. The Flora of the Siberian Sea resembles the preceding in many r^spects. 

 The majority of the elements are the same, but most of the predominating species, 

 i. e., the Laminariacete, are specifically diflerent from those of the province of Spitz- 

 bergen and of the remaining part of the arctic region. From this reason, the Siberian 

 Sea ought to be regarded as a separate province of the arctic Flora. I propose for it 

 the name of the Siherian province. The marine vegetation of Baffin Bay, to which the 

 Flora of the American Arctic Sea seems to approach nearly, is still more isolated. It 

 possesses a considerable number of elements wanting in the rest of the arctic Flora; its 

 characteristic species are partly difierent, and one of them belongs to a generic type 

 that is not represented at all in the Floras of the other provinces. This province may 

 be properly named the American. 



The foUowing tables afford a survey of the composition of the marine Flora 

 within the Arctic region regarded as a whole, and within those three provinces: 



Table i. The species of the arctic Flora and the outlines of their distribution. 



Corallinaee». 



Corallina officinalis 



Lithothamnion glaciale 



>' flavescens 



" foecundum 



» eompactum ... 



» polymorphum 



Lithophyllum arcticum 



» Lenormandi 



Melobesia Lejolisii 



RhodomelacesB. 



Odonthalia dentata 



Rhodomela lycopodioides... 



» larix 



Polysiphonia urceolata 



>* elongata 



i> fastigiata 



» arctica 



" atrorubescens. 



" nigrescens 



+ 



+ 

 + 

 + 

 + 



+ 

 + 

 + ? 



+ 

 + 



+ 

 ? 



+ 



+ 



+ 



+ 



+ 

 + 



+ 



S-3 



+ 

 + 



+ 

 + ? 



+ 



+ 

 + 

 + 



+ 

 + 



+ 





N 

 + 



+ 

 + 



+ 



+ 



+ 

 + 

 + 

 + 

 + 

 + 





+ 



+ 

 + 

 + 



+ 



Spongiooarpese. 

 Polyides rotimdus 



Wrangeliacese. 



Chantransia efflorescens 



» secundata 



Delesseriaoese. 

 Delesseria rosfrata 



" Baerii 



<> corymbosa 



» Montagnei 



» sinuosa 



Nithophyllum pimctatum .. 



Hildbrandtiaoe». 

 Hildbraudtia i-osea 



Squamariaoese. 



Peyssounelia Dubyi 



Cruoria pellita 



Haemescharia polygyna 



^K3 



Oq i=l 



+ 



+ 

 + 



+ 



+ 



+ 





§ 2 



+ 



+ 



+ 



+ 

 + 

 + 

 + 



+ 



+ 



+ 



+ 

 + 



+ 

 + 



+ 



+ 



+ 



+ 



+ 



+ 



+ 



+ 



