48 



KJELLMAN, THE ALG^. OF THE AKCTIC SEA. 



The history of the Flora of the Arctic Sea. 



It is seen from table 1 given above, that of the algae known from the Arctic Sea 

 the following ones are not to be found south of it, as it has been defined here: 



Lithothamnion soriferum, 

 » alcicorne, 



» glaciale 



» intermedium, 



» flavescens, 



» foecundum, 



» compactum, 



Lithophyllura arcticum, 

 Polysiphonia Schtlbelerii, 

 Delesseria rostrata, 



» corymbosa, 



Haemescharia polygyna, 

 Halosaccion saccatum, 

 Kallymenia septemtrionalis, 

 >> Pennyi, 



» rosacea, 



Phyllophora interrupta, 

 Rhodochorton intermedium, 

 » spinulosum, 



» spetsbergense, 



Diploderma amplissimum, 



» miniatum, 



Porphyra abyssicola, 

 Scaphospora arctica, 

 Alaria membranacea, 

 « grandifolia, 

 » dolichorhachis, 

 » elliptica, 

 » oblonga, 

 Larainaria atrofulva, 

 » nigripes, 



Scytosiphon attenuatus, 



Phloeospora pumila, 



Dictyosiphon coryrabosus, 

 » hispidus, 



Sphacelaria arctica, 



Ectocarpus Lebelii, 



Pylaiella nana, 

 » varia, 



Gleothamnion palmelloides, 



Chsetophora maritima, 

 » pellicula, 



Ulva crassa, 



Monostroma undulatum, 

 lubricum, 

 cylindraceum, 

 saccodeum, 

 angicava, 

 arcticum, 

 leptodermura, 

 » ci'ispatum, 



Rhizoclonium pachydermum, 



Chsetomorpha Wormskioldii, 

 » septemtrionalis, 



Ulothrix Sphacelariae, 

 » discifera, 



Characium marinum, 



Codiolura Nordenskialdianum, 



Chlorochytrium inclusum, 



Chlorangium marinum, 



Rivularia microscopica, 



Gleocapsa spec. 



Lithoderma lignicola, 



Accordingly no less than 63 species, representing 22 families and 34 genera. A 

 considerable number of these algas are, indeed, now described for the first time, or 



