49 



В. lapponicus and В. scrimschiranus in the north of Sweden 

 (Skottsberg). 



But self-pollination also must easily take place as the 

 flowers are drooping and the stigma consequently is below the 

 anthers. That self-pollination takes place I conclude from the 

 fact that in one of the districts of Greenland (Godthaab), where 

 it was still quite winterly and quantities of snow were lying on 

 the ground, pollination had already taken place, although I 

 never observed any insects visit the flower, either there or 

 anywhere else in Greenland. 



The flowering period is very long; during the whole of the 

 summer I spent in Greenland I found newly expanded flowers. 



Abundant fruit is set regularly in East and West Greenland 

 and ripens the same year as that in which the plant flowers. 

 The berry is globular, from 9 to 12 mm. in diameter. 



Yaccinium Vitis-idæa L. 

 et f. pumîlum Hornem. (Lange I. c. p. 90). 



Kjellman, 1883, p. 508, fig. Warmii^g, 1884, p. 77; 1885, 

 p. 194, figs. 14, 15; p. 205; 1886b, p. 7. Lindman, 1887, p. 69. 

 Ekstam, 1894, p. 427; 1897, p. 124. Poppids, 1903, p. 42. Stlvén, 

 1906, I, p. 128, tab. IX. 



H. Müller, 1881, p. 380, fig. 153. Schröter, Pflanzenleben, 

 pp. 163-172. 



Observations and material from Greenland, Norway (Fin- 

 mark) and Sweden. 



A dwarf shrub with long, subterranean runners, which 



bear scale-leaves (Fig. 32) and live sometimes for more than a 



year beneath the surface of the soil, being seen to consist of 



older parts which are brown, and younger parts pale in colour. 



The runners have very slender, branching roots which are 



given off beyond the buds, from the axils of leaves (Fig. 34 F); 



they have a straight apex (Fig. 32). 



XXXVI. 4 



