Flowering Piants and Ferns from North-Western Greenland. 33 



found on the mainland of Eiirope, but on the arctic islands; the distri- 

 bution in Arctic America is insufficiently known, and it may be that 

 this species is wrongly placcd as western. 



Hesperis Pallasii, in Greenland only found from Inglefield Land, 

 N. W. (ca. 78°20' N.) to the north coast; otherwise in Arctic America 

 and Asia and on Nowaja Semlja. 



LesquereUa arctica, widely distributed in northern Greenland down 

 to ca. 69°45' N. on the west coast and to ca. 70°40' N. on the east coast, 

 not found in Arctic Europe. 



Ranuncalus affinis, in Greenland north of 76° N. only found at 

 Foulke Fjord, ca. 78°20' N. W., not on the mainland of Arctic Europe, 

 but on the arctic islands. Perhaps better classified as circu polar of 

 scattered occurrence. 



Ranunculus Sabinei, a rare plant; in Greenland only found on 

 the north coast and at Foulke Fjord, N. W. (ca. 78°20' N.). Otherwise 

 only scattered in Arctic America. Perhaps a hybrid between R. sul- 

 phureiis and R. pygmæiis (or R. hyperhoreus). 



Dryas integrifolia^ see above on page 30. 



Potentilla emarginata^ widely distributed in Greenland reaching 

 the north coast, not on the mainland of Arctic Europe. 



Potentilla pulchella, as P. emarginata. 



Potentilla Pedersenii is very difficult to separate from P. nivea 

 forms. In W. Greenland it is known from Assuk on Disco (70°12' N.) 

 and farther north, reaching the north coast and advancing southwards 

 on the east coast to ca. 74°40' N. Otherwise found in Arctic America. 

 It is probably a hybrid between P. nivea and P. pulchella. 



Potentilla Vahliana, a western species found in W. Greenland 

 from ca. 67° N. to Inglefield Land (ca. 78°20' N.), not north of the Hum- 

 boldt Glacier, nor in E. Greenland. Not found in Arctic Europe. 



Salix arctica is taken in a every broad sense, cfr. B. Floderus 

 (1923); it is about the same as the so-called S. anglorum Cham. in Arctic 

 America. 



Saxijraga flagellaris, widely distributed in nurLlicrn Greenland, 

 southwards on the west coast to ca. 76° N. and on the east coast to ca. 

 72° N.; not on the mainland of Arctic Europe, but on Spitsbergen. 



Saxijraga hirciilus, in Greenland only found in a few piaces on 

 the N. W. coast (Wolstenholme Sound, ca. 76°15' N. and Inglefield 

 Land, ca. 78°45'— 79° N.) and on the N. E. coast from ca. 74°30' to 

 ca. 72° N. The Greenland form belongs to the Arctic-American var. 

 propinqua (R. Br.). 



Saxijraga tricuspidata, a western species widely distributed in 

 W. Greenland from ca. 64° N. northwards to the southernmost part 

 of Washington Land (ca. 80° N.), not reaching to north coast; in E. 



3 



LXVIII. 



