789 



phyceæ have been found in West Norway, according to our list; of 

 these species 114 or more than 73 ^/o are found at the F'æroes. 

 There is, however, hardly any doubt, that the greater part of the 

 many Færoese algæ which have hitherto not been found on this 

 part of the coast, that is about 80 species, will certainly be found 

 there. It seems unnecessary to name all these species, but I may 

 mention some Færoese species which may be supposed not to 

 occur on this part of the west coast of Norway: Halosaccion ra- 

 mentaceum, Ptilota pectinata, Rhodochorton penicilliforme , Alaria 

 Pylaii, Laminaria færoensis, and possibly some few more. These 

 species all belong to colder regions. Of the great number of spe- 

 cies found at Norway and not at the Færoes (of red and brown 

 algæ 76 species^) the greater part are of a more southerly distri- 

 bution, but some few are more northern algæ, for instance: Tur- 

 nerella Pennyi, which is arctic, and Litbothamnion tophiforme and 

 Haplospora globosa which are subarctic. 



From West Norway we pass on to Nordland. On account of 

 the Gulf Stream the algæ -flora here has a much more southern 

 character than might be expected so far north ; a great many 

 Færoese species are also found here. 



For our knowledge of Nordland's algæ-flora we are especially 



^ According to our list they are divided in the following way into different groups : 



The arctic group: Turnerella Pennyi. 



The subarctic group: Litbothamnion tophiforme, Haplospora globosa. 



The cold-boreal group: Spcrmotbamnion Tiirneri, Callitbamnion Hookeri, 

 C. roseiim. Ceraminm Dcslongcbampsii, C. circinnatum, C. diaphaniim, Dilsea ednlis, 

 Litbothamnion intermedium , L. fornicatum, L. norvegiciim, Ectocarpns Tnrnerellæ, 

 E. Pringsbeimii, E. terminalis, E. penicillatus, E. draparnaldioides, Myriotrichia fili- 

 formis, Dictyosiphon Chordaria, Mesogloia vermicnlata, Spermatochniis parado.viis, 

 Fiicus ceranoides and Fucus serratus. 



The warm-boreal group: Nemalion mnltifidum, Gelidium crinale, G. lati- 

 folium, Pbyllopbora rubens, Catenella opuntia, Rbodophyllis bifida, Chylocladia 

 kaliformis, Nitophyllum punctatum , Bonnemaisonia asparagoides , Polysipbonia 

 spinulosa, P. simnlans, Brongniartella byssoides, Monospora pedicellata, Pleonosporinm 

 Borreri, Callitbamnion tetragoniim, Compsotbamnion tbuyoidcs, Ceraminm flabelli- 

 ferum, Gloiosipbonia capillaris, Halarachnion lignlatnm, Litbotbamnion membrana- 

 ceum, L. Sonderi, L. calcareum, Litbopbylhim orbicnlatum, L. piistulatum, Melobesia 

 farinosa, M. Lejolisii, M. minntula, Corallina rubens, Ralfsia pusilla, Myrionema 

 intermedium, Chilionema ocellatum, Ascocyclus orbicularis, Microspongium gelati- 

 nosum, Ectocarpus spbæricus, E. globifer, Myriotrichia repens, M. claoæformis, My- 

 riactis Haydeni, Elacbista stellaris, o'iraudia sphacelarioides, Sphacelaria bipinnata, 

 Asperococcus bullosus, A. compressus, Litosiphon pusillus, Striaria attennata, Myrio- 

 cladia Zosteræ , Chordaria divaricata, Stilophora rbizodes, Saccorbiza bulbosa, 

 Cutleria multifida, Tilopterls Mertensii, Dictyota dichotoma. 



