48 
considerable number of these alga are, indeed, now described for the first time, or 
KJELLMAN, THE ALG@ OF THE ARCTIC SEA. 
The history of the Flora of the Arctie Sea. 
It is seen from table 1 given above, that of the alge 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, 
y elaciale 
» intermedium, 
» flavescens, 
» foecundum, 
» compactum, 
Lithophyllum arcticum, 
Polysiphonia Schiibelerii, 
Delesseria rostrata, 
» corymbosa, 
Hemescharia polygyna, 
Halosaccion saccatum, 
Kallymenia septemtrionalis, 
» Penny, 
» rosacea, 
Phyllophora interrupta, 
Rhodochorton intermedium, 
» spinulosum, 
» spetsbergense, 
Diploderma amplissimum, 
» miniatum, 
Porphyra abyssicola, 
Seaphospora arctica, 
Alaria membranacea, 
»  grandifolia, 
»  dolichorhachis, 
» — elliptica, 
» oblonga, 
Laminaria atrofulva, 
» nigripes, 
Lithoderma lignicola, 
Scytosiphon attenuatus, 
Phloeospora pumila, 
Dictyosiphon corymbosus, 
» hispidus, 
Sphacelaria arctica, 
Ectocarpus Lebelii, 
Pylaiella nana, 
» varia, 
Gleothamnion palmelloides, 
Chetophora maritima, 
» pellicula, 
Ulva crassa, 
Monostroma undulatum, 
» lubricum, 
» cylindraceum, 
» saccodeum, 
» angicava, 
» arcticum, 
» leptodermum, 
) crispatum, 
Rhizoclonium pachydermum, 
Chetomorpha Wormskioldii, 
» septemtrionalis, 
Ulothrix Sphacelarie, 
» discifera, 
Characium marinum, 
Codiolum Nordenskiéldianum, 
Chlorochytrium inclusum, 
Chlorangium marinum, 
Rivularia microscopica, 
Gleocapsa spec. 
Accordingly no less than 63 species, representing 22 families and 34 genera. 
A 
