662 



Regarding the Lichens, Deichmann Branth (pp. 337 — 338) 

 has only thc following: - - The Færoes have 13 European species 

 whieh are not found in Iceland and which are most comnion »in 

 the woody, temperate regions of Europe« ; 2 species which are not 

 found in Scandinavia (viz. 1 Atlantic and 1 Arctic-Suharctic); and 

 4 Arctic and Suharctic which are not found in Great Brilain. This 

 also bears out the common result. 



The floral character of the Marine Algæ will be treated by Bør- 

 gesen in connection with their vegetation in the last part (Part. III) 

 of this book, and regarding the Marine Diatoms, which occur as 

 epiphytes on Marine Algæ, Østrup (p. 556) does not say anything 

 conclusive about them. But as regards the Marine Plankton the 

 conditions are quite different, and very clear, as may be expecled : — 

 While Norway has some Arctic species, the Færoes have, according 

 to Ostenfeld (see p. 611 above), none, owing to the islands being 

 »ahnost constantly surrounded by the waters of the Atlantic« 

 (Gulf Stream). 



The above recent studies of the floral conditions prevailing in 

 the Færoes, based on a larger amount of material, bears out the 

 earlier assumption that the Land -flora of the Færoes must have 

 genetic connection with that of West Europe, i. e., it must have 

 immigrated chiefly, perhaps enlirely from West Europe, 

 and especially from the part lying nearest, viz. Great 

 Britain. 



The flora of the Færoes is, moreover, s een from a geo logi- 

 cai point of view, a young flora: — It has no endemic species 

 of vascular piants — except, as mentioned above, among the Hiera- 

 cia — (see Ostenfeld, p. 107) and the few, hitherto unknown forms of 

 Mosses, Freshwater Algæ, Freshwater Diatoms, and Fungi, whieh 

 have been met with, will doubtless, on a closer examination, be 

 found also in other countries 1 . 



The Færoes form thus a strong contrast to other Atlantic is- 

 lands, viz. the Azores, Madeira, and the Canaries, which are rich 

 in endemic species, and have a flora whieh is very old, related to 

 that of the Tertiary time; this can only be accounted for by the 



1 The new forms may be distributed ;is follows: — Mosses, 1 species and 

 some 7 varieties out ol' :w<s species (pp. 185 — 8(5); Freshwater Algæ, 4 species. .'5 va- 

 rieties and a few secondary forms out of 324 species; Freshwater Diatoms, 4 spe- 

 cies and some ( .) varieties out of 248 species; Fungi, !> species out of 168 species: 

 Lichens, no new forms out of 194 species. 



