90 Knud Jessen. 



is secreted" more abundantly, the stamens are well-developed r 

 with brown anthers, the carpels are very rudimentary and 

 scarcely visible in the hypanthium. Insect-visitors to the 

 flowers are fairly frequent, especially flies. In the male 

 flowers they devour partly honey and partly pollen, in the 

 female flowers it is probably the white stamen-rudiments 

 which attract them, because their attention is always drawn 

 to these staminodes. 



In Spitzbergen the plant has been collected with flowers 

 twice only; the second time numerous flowers were found 

 at Kol Bay (23 . 7 . 1898); they were smaller than those from 

 the district of Tromsö (Arctic Norway) and were all female 

 (Andebss. and Hesselm.). 



In Greenland it is peculiar that the two sexes have not 

 been found in the same locality. Thus, only male flowers 

 have been found at Julianehaab and on the large island to 

 the west of Ameralikfjord, while only female flowers have 

 been gathered in different localities near Godthaab (Vahl 

 [see Warming, 1886], Lange, Rosenvinge and Hartz). 

 Warming (1. c.) mentions that Wormskjold records fruit 

 of Rub. Chamæmorus from Greenland, and Rosenvinge 

 (I. c.) says that it appears to set ripe fruit at Kasigi- 

 ànguit near Godthaab. Otherwise it is not known to 

 bear fruit in Greenland. As regards this point Norman 

 records from Arctic Norway that it sets fruit there in 

 favourable years, even in the northernmost districts; in 

 the highest habitats it never flowers, and A. Cleve (loc. 

 cit., p. 47) records that it is often sterile in the mountains of 

 northern Sweden. In places on the coast of Arctic Norway, 

 at higher levels above the sea, it bears almost exclusively 

 male flowers and probably every year; and Norman says 

 that in certain years, only or almost only male flowers occur 

 over very large areas so that the harvest fails entirely. Lastly, 

 Poppius (1. c.) mentions the distribution of the two sexes; 



