748 



foiind almost anywhere on the coasts of the Færoes. The formation 

 constantly adapts itself to the more or less exposed situation of the 

 locahty and by aid of the Fucaceæ- vegetation , it may as a rule be 

 easily determined whether a certain locahty is sheUered or exposed. 



The Fiicaceæ- (ormaiion of the Færoes seems to agree weh with 

 Rosenvinge's of the coasts of Greenland. According to Strom- 

 felt's soniewhat scanty description (80, p. 10), a very similar vege- 

 tation must be found on the coasts of Iceland. If we compare the 

 F/zcrtcece-formation of the coast of Norway, described among others 

 by Hansteen (38, p. 351— 52) and Boye (6, p. 27), we at once ob- 

 serve that they are essentially different from a floristical point of 

 view, as Fiicus serratus, which is very common on the west coast 

 of Norway, is absent on the Færoes; æcologically there likewise 

 seems to be a great difference between them. Boye writes (1. c, 

 p. 25): »Even in the most exposed localities, a very luxuriant 

 Fucus-vegetation is usually found«; he mentions moreover two forms 

 of Fucus vesiculosiis, besides a f. elongata of Fiicus serratus as being 

 found there. This is quite contrary to what we observe on the 

 Færoes, where Fiiciis vesiculosiis is absent on exposed coasts. The 

 only Fz/r«s- species that will thrive here are Fucus spiralis and 

 F. inflatus. As before-mentioned (p. 724) I doubt, however, whether 

 Boye 's observations are perfectly correct. 



In the northern part of Norway, where Fucus inflatus is com- 

 mon, the Fwcizs-vegetation hardly differs from that of the Færoes 

 in anything but this, that Fucus serratus is frequent. The Færoese 

 Fwrus-vegetation also much resembles that of the Shetland Isles, ex- 

 cept that a luxuriant growth of Fucus serratus occurs on the shores 

 of the latter. What makes the resemblance still greater is, that Fucus 

 inflatus has been found here (cfr. 9, p. 5). Simmons mentions (78, 

 p. 251 and 253) a Pe/fe/m- formation and a Fucus -Ascophyllum- 

 formation found on the Færoes. 



2. The Sublittora! Region. 



As mentioned before, I agree with Rosen vinge in determining 

 the upper boundary line of this region at about low water mark, 

 at neap-tide. In the Færoes the boundary line is almost identical 

 with the distinct upper line of the A/a/*/« -association. Kjell man 

 determines the lower limit of this region at the curve of 20 fathoms, 

 and he calls the area covered by algæ below this, the elittoral re- 



