42 



Nr. 3. C. H. Ostenfeld: 



Draba Adainsii Kpilohiuni arcliciiin 



— repens Taraxacum arcticuin. 



or lliese, Epilobinm arcliciim has a remarkable area ol" 

 dislribulioii in (Ireenland, being Ibuiul botb on tbc West 

 Coasl at 72 —09 X. Lat., and on Ihe Ivisl Coast in Scoresby 

 Sonnd (abl. 71" N. Lat.)- Another remarkable range of distri- 

 bution is Ibat of the circumpolar, but rare, Carex atrofusca 

 (C. usluhild): West Greenl. Distr. VI and Va, East Greenl. 

 Distr. V. The immigration of such species is (iiliicult to 

 understand; in the case of Epilobinm, however, we must, 

 as long as it is elsewhere only known from arctic Eurasia, 

 regard il as coming from the east. 



There remain two groups which must be considered 

 more closely. Group C comprises 26 species, which are 

 characterised by being found both in America and Europe, 

 though not in those European countries which we should 

 most naturally consider as likely sources of origin, viz. 

 Iceland and Scandinavia. The species are as follows: 



S Cerastium arvense. 



S Slrt'plopiis aniplexil'olius. 



S Carex siipina. 



S Draba stvlaris. 



Al Minuartia liossii. 



Al Draba subcapitata. 



Al Futrenia iMiwardsii. 



Al Hesperis l*allasii. 



Al lianunculus al'finis. 

 Al — sulptiureus. 



Al I'olentilla eniarginala. 



Al Potentilla |)iil(liclla. 



Al Salix arctica s. 1. 



Al Saxifraga flagellaris. 



Al Taraxacum i)hymalt)carpum. 



k-i Polenioniuin boreale. 



A2 Pedicularis lanata. 



A2 Carex ursina 



Al Alopecurus alpinus. 



As Arctophila fulva. 



Al Dii|)()iitia I-'isheri. 



Al I^leuropogon Sal)iiu'i. 



Al Poa al>breviata. 



Al Puccinellia angustata. 



A2 — tenella. 



Al — Vaiiliana. 



Of these, the first 4 are sul)-arctic and boreal, and il 

 is Ihus iiatural thai Ihey should have come lo Greenland 



