Contributions to thc Flora of West Greenland. 



185 



to the ice-age when all Greenland was covered by ice. If this supposition 

 is correct, having regard to the great length of the coast-line, it is sur- 

 prising to find 150 species or about 71 p.c. of the total flora common 

 to both regions. 



Also if we divide the flora into groups of northern, widely distri- 

 buted, and southern types the numbers reveal a close agreement: 



i. e. the most marked difference is presented by the arctic element. 



Together with numerous other valuable notes on the flora of Scoresby 

 Sound Hartz (loc. cit.) has given the maximum vertical range for 

 nearly all the species of vascular piants, and I have tried to compare 

 these ranges with those known from the west coast of Greenland, 

 especially those within the same parallels. Unfortimately our available 

 information on this point is still very incomplete and all such records 

 can only he considered as preliminary. 



In Lange's: Conspectus FL Grl. numerous records of this kind are 

 given, but, as remarked by Lange (11) himself; mostly without any 

 information as to the latitude or local conditions. As the absohite max- 

 imum, vertical range cannot reasonably be expected to be the same 

 on the latitude of Julianehaab and of Upernavik, such records are 

 consequently not of much value. 



In the summary given below I have tried to compile the records 

 of vertical ranges of vascular piants from W. Greenland and, in a separate 

 column, those from Scoresby Sound. My sources have principally been 

 Lange's: Conspectus with appendices of which only the last, edited by 

 Rosenvinge (23), gives any information on latitude etc, also War- 

 MiNG (30), Rink (22), Hartz (4, 5) and Porsild (16). In brackets I 



