342 



have thereby been able to form a more complete idea of the vege- 

 tation as a whole. 



This short account of my journeys will show that I visited 

 the Færoes only in the spring and summer months, but as I was 

 anxious to get some collections from the autumn and winter months, 

 Mr. Hel gi Jonsson on his return journey from Iceland in the 

 autumn of 1897 very kindly stayed some time in the Færoes for 

 the purpose of collecting, the Carlsberg Fund generously covering 

 the expenses. Jonsson stayed in the Færoes from Oct. 26th to 

 Dec. 9th; he traversed more particularly Nordreoerne, Ostero, Sydero 

 and the environs of Thorshavn, and brought home a considerable 

 collection. Lastly, Mr. Ostenfeld brought home some smaller collec- 

 tions especially from Trangisvaagfjord. If we add to this the portions 

 of Lyngbye, Rostrup and Si m mons's collections which I 

 have had at my disposal, the material which I have had for 

 examination forms a continuous series from April 21stto Dec. 9th. It 

 has thus been possible with regard to the grealer part of the species 

 to form a fairly definite idea of their development at the different 

 seasons, though it has of course been a great drawback to have 

 no material from the 3 winter months proper, a season of the year 

 which is of great importance in arriving at any final conclusion 

 with regard to the development of the algæ. 



As Ko Id er up Ro sen vinge has pointed out in his introduc- 

 tion to »Gronlands Havalger« , in order to be able to arrive at a 

 correct conclusion concerning the composition of a flora it is as 

 necessary to exclude those species which have erroneously been 

 referred to it as to include such as really belong to it; consequently, 

 I have omitted those species with regard to which I felt justified 

 in doubting that they really belong to the llora; and in several 

 cases it has been possible for me by the help of the original spe- 

 cimens in the museum in Copenhagen as well as of those kindly 

 lent me from other piaces to prove the error beyond doubl. 



In preparing the following list I have naturally followed Kjell- 

 mnn's »Norra Ishafvets Algflora«, the latter being the standard 

 work more particularly for the Arctic alga-llora, but I differ in 

 some respects from Kjellman's dilinition of species in which I 

 follow moslly the opinion of other investigators, such as Foslie 

 and more particularly Rosen vinge, as expressed in his well-known 

 work »Gronlands Havalger«. Thus, I have as a rule adopted the 

 view emphasized by Rosenvinge that such forms as are un- 



