PHYTO-GEOGRAPHICAL STUDIES 



BASED UPON OBSERVATIONS OF 



»PHANEROGAMÆ AND PTERIOPHYTA« 



BY 



C. H. OSTENFELD. 



THE phanerogams and vascular cryptogams of the Færoes, as 

 may be seen in the preceding treatise on the flora, comprise 

 277 ^ species whose introduction \ve have no reason to attribute 

 to human agency; and further, 40 species which were doubtless 

 either accidentally or intentionally introduced by man. With the 

 exception of the latter, all the species of phanerogams and vascular 

 cryptogams together with a few hybrids and varieties are enume- 

 rated in the accompanying list. 



The letter c after the name of tlie species dcnotes that it is 

 commonly distributed on all the islands; the others are less frequent 

 or rare and only met with on some of the islands. 



The species marked ° are not found in k'cland , those marked 

 f not in Scandinavia and those marked * not in Great Britain. 

 Further the »Atlantic« species are printed in small capilals, the 

 »Arctic« species in italics and the »Temperate European« in or(h- 

 nary types. 



Floristic differences with in the grouj) of Islands. 

 Though the Færoes are small and not far distant from each other, 

 yet floristic differences may be traced in the dillerent parts of the 

 group. The common species are naturally met with on all the 

 islands, so we must turn, to find the differences, to those which 

 only occur in a few piaces. The natural grouping of the islands 

 according to their floristic peculiarities nearly coincides with their 

 geographical situation; thus all the northern islands (Nordreoerne, 

 Ostero, Stromo and Vaago) form a northern section and the southern 

 (Sando and Sj^dero) a southern section. I, however, prefer to make 



^ In this treatise the number is brought up to 285 as several of the liybrids 

 have lieen numbered. 



