44 



H. G. SIMMONS. 



[SEC. ARCT. EXP. FRAM 



When we give the group of more or less ubiquitous species the 

 largest possible range, so as to contain 90 species out of the 152, we 

 find 73 of them in all the three districts here specially in question; 4 are 

 absent from Ellesmereland, 13 from N. W. Greenland. The last number 

 will, however, be considerably reduced by further research. If, on the 

 other hand, we take the group of american species in its widest com- 

 prehension, embracing 44 species, we get them thus grouped: in all three 

 regions 23; in Ellesmereland and N. W. Greenland 7; in Ellesmereland 

 and N. E. Greenland 2; in Ellesmereland alone 8; moreover 4 species 

 not yet found in Ellesmereland but in N. W. Greenland (1) and as well 

 in N. E. Greenland (3). 



These figures show clearly a gradual decrease of the number of 

 american species to the east such as, a priori, we had to look out for; 

 and the same is the case with the number of plants of decidedly ame- 

 rican origin. Of these, Androsace septentrionalis, Chrysosplenium al- 

 ternifolium, Alsine Rossii, and Carex membranopacta have only reached 

 eastward to Ellesmereland. To these may be added Saxifraga Hir- 

 culus, which may have reached N. E. Greenland from the east; Draba 

 subcapitata, not yet known with certainty in Greenland ; and Carex 



