780 



phyto-geographical position of Ihis flora on tiie whole, I give a 

 summary oF the Rhodophyceæ and Phæophyceæ of these countries 

 in the following table; the numbers are taken from the table pre- 

 pared by Jonsson and myself (12, p. XXII)^. 



It is evident from this table, that the Færoes come next to 

 the Shetland Isles and Nordland. Scotland has a consider- 

 able percentage of warm-boreal species, no arctic and only very fevsr 

 subarctic species. West Norway has a much smaller number of 

 warm-boreal, Va *^/o of arctic [Tnrnerella Pennyi found in Trondhjems" 

 fjord by Foslie), and a little higher percentage of subarctic species, 

 The Shetland Isles likewise have a smaller number of warm- 

 boreal species, but apparently an equally large number of subarctic 

 species as West Norway; this is, however, certainly due to the faet, 

 that these Isles have not been sufficiently investigated, for it is clear, 

 that if the subarctic group 1 is represented by 3.8 *^/o in Scotland, 

 it must reach to the same amount at least in the Shetland Isles, where 

 none of these species have been found hitherto. Of the Færoese 

 algæ, only 13 ^/o are warm-boreal, almost one half are cold boreal and 

 29^0 subarctic. Nordland has not quite so many warm-boreal spe- 

 cies, that is, only a little more than 10%; one half of the species are 

 cold-boreal ; the subarctic group is a little smaller than at the Fær- 

 oes, but on the other band a small arctic element is found here. In 



* The numbers belonging to the Færoes differ a little from those above, as 

 Ectocarpus spec. is left out of consideration here. 



