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 Faeroes only in the spring and summer months, but as I was 
anxious to get some collections from the autumn and winter months, 
Mr. Helgi Jonsson on his return journey from Iceland in the 
autumn of 1897 very kindly stayed some time in the Faeroes for 
the purpose of collecting, the Carlsberg Fund generously covering 
the expenses. Jonsson stayed in the Faeroes 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 Simmons’s collections which I 
have had at my disposal, the material which I have had for 
examination forms a continuous series from April 21st to Dec. 9th. It 
has thus been possible with regard to the greater 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 algae. 
As Kolderup Rosenvinge 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 flora; 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 places to prove the error beyond doubt. 
In preparing the following list I have naturally followed Kjell- 
man’s »Norra Ishafvets Algflora«, the latter being the standard 
work more particularly for the Arctic alga-flora, but I differ in 
some respects from Kj ell man’s difinition of species in which I 
follow mostly the opinion of other investigators, such as Foslie 
and more particularly Rosenvinge, 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- 
