48 



KJELLMAN, THE ALG^ OF THE AKCTIC SEA. 



The liistory 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, 

 Lithophyllum arcticum, 

 Polysiphonia Schtlbelerii, 

 Delesseria rostrata, 



» coi'ymbosa, 



Hasmescharia 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, 

 Laminaria atrofulva, 

 » nigripes, 



Scytosiphon 



attenuatus, 



Phloeospora 



pumila, 



Dictyosiphon coryrabosus, 



» hispidus, 

 Sphacelaria arctica, 



Ectocarpus Lebelii, 

 Pylaiella nana, 



» varia, 



Gleothamnion palmelloides, 

 Chtetophora maritima, 

 » pellicula, 



Ulva crassa, 





Monostroma 



undulatum, 



» 



lubricum. 



» 



cylindraceum, 



» 



saccodeum, 



» 



angicava, 



» 

 » 



arcticum, 

 leptodermum, 



» crispatum, 



Rhizoclonium pachydermura, 

 Chfetomorpha Wormskioldii, 



» septemtrionalis, 



Ulothrix Sphacelariffi, 



» discifera, 

 Characium marinum, 

 Codiolura Nordenskiöldianum, 

 Chlorochytrium inclusum, 

 Chlorangium marinum, 

 Rivularia microscopica, 

 Gleocapsa spec. 



Lithoderma lignicola, 



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

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



