805 



In Klaksvig and Vestnianhavn it grows under exactly similar outer 

 conditions; in both places, especially in Vestnianhavn, much fresh 

 and cold water streams down the rocks into the sea, and the 

 temperature of the sea can be fairly low in winter, especially in 

 the upper water layers. At Svino it grows on an exposed coast 

 but at a high level in a large water basin which is only inundated 

 by the sea at high-tide and by rough seas; here also the tempera- 

 ture of the w^ater can of course be somewhat reduced in the winter. 



Whilst this species has thus only been found in the northern 

 territories of the islands, there are also some few others which 

 have only been found at the southern and w^estern coast. Griffithsia 

 setacea, for instance, lias only been found in Trangisvaagfjord on 

 Sydero, likewise Polysiphonia violacea; Laurencia pinnatifida has 

 only been gathered in Trangisvaagfjord and at Hojvig on Stromo; 

 ver}^ stunted specimens of Nitophylliim laceratiim on the west coast 

 of Stromo, south of Kvivig and, according to Simmons, Ectocarpus 

 veliitiniis in Kvalbofjord on Sydero, but it is certainly not excluded, 

 that these and a few other forms, hitherto onlv found at the southern 

 and western half of the islands, may also be found farther north. 



In this connection it should be pointed out, that the Faeroes form 

 the southern limit ^ of several species of northern distribution, as well 

 as the northern limit of several species of southern distribution. 



Among the former should be mentioned, besides the above 

 mentioned Halosaccion ramentaceum , also Ptilota pectinata, Rhodo- 

 chorton penicilliforme , Rhodophijllis dichotoma, which is, however, 

 reported as found at Bergen in Norway, that is, almost as far south- 

 ward, and a few more. Of species having their north-western limit 

 here (the real northern limit of several of these species is on the 

 Avest coast of Norway) the following should be mentioned : Porphyra 

 leucosticta, Callophyllis laciniata, Callocolax neglecta, Nitophylliim 

 laceratiim, Griffithsia setacea, Callithamnion graniilatiim, Rhodochorton 

 seiriolaniim, Lithothamnion Icevigatiim, Lithophylliim incriistans, Ec- 

 tocarpus liicifiigiis, E. veliitinus, Himanthalia lorea, Valonia ovalis, 

 and several others. 



4. The Origin of the Marine Algae-flora of the Faeroes. 



Kjellman (48, p. 58—77) and Reinke (68, p. 96—99) are cer- 

 tainly right in supposing that both the European and American 



^ Several of these species are, however, found still farther south on the east 

 coast of America on the Atlantic Ocean. 



