789 



phijcecB have been found in West Norwa}^ according to our list; of 

 these species 114 or more than 73 Vo are found at the Faeroes. 

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

 many Faeroese algae 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 Faeroese species which may be supposed not to 

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

 mentaceiim , Ptilota pectinata, Rhodochorton penicilliforme , Alaria 

 Pylaii, Laminaria fceroensis, 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 Faeroes (of red and brown 

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

 bution, but some few are more northern algae, for instance: Tiir- 

 nerella Pennyi, which is arctic, and Lithothamnion tophiforme and 

 Haplospora globosa which are subarctic. 



From West Norway we pass on to N or d land. On account of 

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

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

 Faeroese species are also found here. 



For our knowledge of Nordland's algae-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: Lithothamnion tophiforme, Haplospora globosa. 



The cold-boreal group: Spermothamnion Turneri, Callithamnion Hookeri, 

 C. rosenm, Ceramium Deslongchampsii, C. circinnatam, C. diaphanum, Dilsea edulis, 

 Lithothamnion intermedium, L. fornicatum, L. norvegicum, Ectocarpns Turnerellce, 

 E. Pringsheimii, E. terminalis, E. penicillatus, E. draparnaldioides, Mijriotrichia fili- 

 formis, Dictyosiphon Chordaria, Mesogloia vermiculata, Spermatochnus paradoxus, 

 Fucus ceranoides and Fucus serratus. 



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

 folium, Phyllophora rubens, Catenella opuntia, Rhodophyllis bifida, Chylocladia 

 kaliformis, Xitophyllum punctatum , Bonnemaisonia asparagoides , Polysiphonia 

 spinulosa, P. simulans, Brongniartella byssoides, Monospora pediccllata, Pleonosporium 

 Borreri, Callithamnion tetragonum, Compsothamnion thuyoides, Ceramium flabelli- 

 ferum, Gloiosiphonia capillaris, Halarachnion ligulatum, Lithothamnion membrana- 

 ceum, L. Sonderi, L. calcareum, Lithophyllum orbiculatum, L. pustulatum, Melobesia 

 farinosa, M. Lejolisii, .1/. minutula, Corallina rubens, Ralfsia pusilla, Myrionenia 

 intermedium. Chilionema ocellatum, Ascocyclus orbicularis, Microspongium gelati- 

 nosum, Ectocarpus sphcericus, E. globifer, Myriotrichia repens, M. clavceformis, My- 

 riactis Haydeni, Elachista stellaris, uiraudia sphacelarioides, Sphacelaria bipinnata, 

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

 cladia Zostera^ , Chordaria divaricata, Stilophora rhizodes, Saccorhiza bulbosa, 

 Cutleria multifida, Tilopteris Mertensii, Dictyota dichotoma. 



