The Flora of Greenland and its Ori},'in. 51 



through human agency or by the aid of Nature, and there 

 is not any need of supposing an alteration in tlie con- 

 figuration of the land. 



Summary. 



Our knowledge of the distribution of vascular crypto- 

 gams and phanerogams in Greenland is now so complete 

 that it is time to make some phyto-geographical observa- 

 tions. 



With the delimitation of species used by the present 

 writer, the flora of Greenland comprises 390 vascular crypto- 

 gams and phanerogams, The General List at the end of 

 this paper shows these 390 species and their distribution 

 in Greenland. 



Greenland may be divided into 15 phyto-geographical 

 .districts, the West Coast and East Coast being taken separ- 

 ately, as the whole of the interior is occupied by the inland 

 ice, with no vegetation. 



A list (table II) on p. 23 gives the number of species in 

 each district, grouped according to distribution outside Green- 

 land; also according to 3 phyto-geographical categories (high- 

 arctic, arctic and sub-arctic to boreal); and further as to how 

 manj^ species in each district are found only on the West 

 Coast or only on the East Coast, and how many (32) extend 

 from the North Coast (abt. 83° N. Lat.) to the southern 

 extremity (abt. 60° N. Lat.). 



Owing inter alia to linds of species on nunataks (i. e. 

 areas rising above the inland ice), it is supposed that some 

 species (abt, 60) may have survived the glacial maximum 

 in Greenland. 



It is shown that the Xorse colonisation (abt. 985—1450 

 A. D.) must have been of great importance to the com- 



4 



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