Floristik, Geographie, Systematik etc. 251 



arktiske Station paa Disko, Nr. 3. (Medd. Grönland, Köben- 

 havn, XLVII. p. 249-274. with 10 iigs. 1911.) 



The Have Island lies in the Davis Strait and extends 

 from 70° 19 to 70° 28 N. Lat.; its area is about 112 km 2 . The distance 

 to the coast of Disko is 6 miles, to the coast of Nugsuaq 12 miles. 

 Both the soil (basaltic and tufaeeous layers) and the climate are not 

 very favourable for plant-life; most of the formations known from 

 the coast of West-Greenland are poorly developed, some of them 

 totally absent: Halophytic formations are scanty. Most parts of the 

 surface of the island belongs to the poor formation called fell-field 

 ("Fjeldmark"); heaths, meadows, marshes and bogs are poorly 

 developed and no truly aquatic vascular plant was seen by the 

 author on his visit in 1909. Herb-mat was scarcely present and 

 willow-copses totally absent. 



The list of vascular plants contains only 112 species; and 31 

 species which oeeur on the neighbouring coast of Disko and 

 Nugsuaq are absent. The reason for their absence is the difficul- 

 ties which aretie plants encounter in their wandering. The transpor- 

 tation by the agency of the wind in winter over hardened snow 

 and frozen seas is an important factor in the dispersal of aretie 

 plants, but as to Have Island there are circumstances that often 

 neutralize it, namely the fact that the straits separating the island 

 from the main-lands are very rarely covered with continuous ice, 

 even in the severest winter. 



With regard to the southern and northern types in the flora of 

 Have Island 18 species are northern and 14 southern; the remai- 

 ning 80 species are widely spred over the west coast of Green- 

 land, but not all in the same degree, 64 being more northern, 16 

 more southern in their distribution. Summing up the numbers and 

 giving the result in percentages we get 73.1°/ aretie and 26.9 

 "hemiaretie" elements. The southern types (the hemiaretie dement) 

 are more numerous in the adjacent large Island of Disko, and it 

 is an interesting Observation "that they ripen their fruits and seeds 

 late in the autumn, and that they oeeur only on spots well covered 

 with snow durin g winter. They are thus almost totally prevented 

 from migrating longer distances and as the tracts of coast which 

 connect their stations are unfitted for them, they are obliged to 

 remain on the spots "where they are". Hence we must regard them 

 as lingering evidences (relics) of a milder climate in postglacial 

 times". C. H. Osten leid. 



Porsild, M. P., List of vascular plants from the south coast 

 of the Nugsuaq peninsula in West Greenland. Arbejder 

 fra den danske arktiske Station paa Disko Nr. 2. (Medd. 

 Grönland, Köbenhavn. XLVII. p. 237—248. 1911.) 



The country investigated lies between ab. 70° N. Lat. and ab. 

 70° 30' N. Lat. and comprises the southern part of the large Nugsuaq 

 peninsula of West Greenland. It is divided into 1) a basaltic 

 district, 2) a district with carboniferous sand and 3) a gneissic 

 district. 



The plant list contains 158 species of which two {Ranunculus 

 reptcuis L., Gnaphalium supinum L.) find their northern limit in 

 West Greenland here, and one species, Draba subcapitata Sim- 

 mons, is new to West Greenland. C. H. Ostenfeld. 



