24 



short time (Warming, Ekstam), according to Lindman protogynous- 

 homogamous (Norway, the Dovre). 



As the anthers dehisce in the still incompletely open 

 flower, and the stigma may also be shiny, pollination will, in 

 all probability, take place immediately the flower expands (Fig. 

 I4i>). Pollen is at that time seen shed and lying on the inner 

 parts of the flower. 



Honey is secreted by the slightly lobed, ring-shaped disk 

 at the base of the ovary (Fig. 15 6^) and appears to be retained 

 there between and outside the basal parts of the stamens; 



Fig. t4. Cassiope hyjmoides. 



Л, The flower still m a bud; -Vi (Disko; July 20, 1884). B, A fluwer is within the bud 

 (Upernivik; Sept. 2. 1886). C, Pollen tetrad. D, Even in a tlower of this age the anthers 

 are open, and the pollen has fallen out (Disko : July 22, 1884). E, Apex of the style shewing 

 stigma covered with mucilage. F, Base of a peduncle with the surrounding leaves (those 

 in front have been removed). G, Capsule. (E. W.) 



in efl'ecting this the small warts on the filaments (Fig. loi') 

 most probably play a part. 



Self-pollination as well as cross-pollination by insects appears 

 to be able to take place. According to Skottsberg the flowers 

 are slightly fragrant in Lapland and are visited by Bombus 

 lapponicus. 



The plant sets ripe fruit in East and West Greenland, in Iceland 

 and in Scandinavia (Fig. 13; Fig. 14 G^). In West Greenland I 

 have seen specimens which had abundant fruit from the previous 

 year, but were barren in the present year. Norman and Haglund 

 have made similar observations; therefore it may be assumed 

 that flowering and barren years alternate. 



