38 



Nr. 3. C. H. Ostenkei-d: 



from Ihc \\\'sl (Aiiierican species) and Ihosc IVoin the Hast 

 (l^uropean species). In each categorv wc liiui species \vilh 

 wide distribiilioii and species of verv restricled occnnence. 

 Olien however. llie distrii)ntii)n in Greenland itself gives 

 some indication ns lo the direction whence a species lias 

 come. We inay i^encrallv sav, for instance, llial the American 

 species are more widely (lisliii)uled, and more numerous. 

 on Ihe West ('.oast than on llic l'^asl. They may have found 

 their way to the Kast Coast by the southward ronte via Cape 

 Farewell; Ihis I piesume lo be the case for instance with 

 MinuaHia (jrocnlandica, Dralut aiirea, Coplis tvifoUa, Poten- 

 tilla tridenlaUi, Antennaria (jroenlandicd, (udiiim Bnindcffei, 

 Carex deflexa and Uabendrid hijperhorcd, as al so, for 

 instance, with a good American species like Carex scirpoidea, 

 though Ihis also has been found in a single locality in 

 Norway. All these have a marked norlhern limit of 

 occurrence on the West Coast south of Melville Bay, bul 

 extend right down to the southern extremity, and can 

 thence have proceeded wilhout interruption norlhward 

 along the East Coast. Others again may have come from 

 the north; these include such species as Melandriium Iri/lo- 

 riim, Lesquerella arctica, PoteniUla Pedcrseiiii, Eriqcron 

 coinpositus (?), Tofieldia cuccinea, Desciiainpsui airticd and 

 I), pnmila. These species have (practically) no norlhern 

 limit in (Ireenland, l)ut extend only some wav down Ihe 

 East and West (toasts. (Eruicron composHus has a few 

 records in ihe southernmost districts of Ihe West Coast). 

 I have already noted (j). 'M)) thai 4 American species with 

 bolh norlh and south liniil of distribution in West Green- 

 land are found again in the Scoresby Sound districl on 

 the East Coast, and must bc ])resumed to have crossed the 

 inland ice. 



