32 



Sometimes, however, the hairs on the inside of the corolla, 

 especially those at the throat, occur rather sparingly. 



Cross-pollination by insects may easily take place. Honey 

 is secreted by a hypogynous disk of ten glands (Fig. 21(?). 

 The capsule is erect. Poppiüs observed Colias Palœno L., 

 Plusia microgamma Hb. and Bombus agrorum Fabr. visiting 

 the flowers. 



The flower is obdiplostemonous, and the carpels are anti- 

 petalous. I have found 4-merous flowers in Finmarken and in 

 Greenland. 



1 do not find any important difference between Greenland 

 and European individuals. 



Lyonia calyciilata (L. Don.); syn. Cassandra calyculata (L.) Don. 

 Haglünd, 1905, p. 3.3. Warming, 1906, III, p. 150. 



Material from Finland (flowering in the Botanic Garden in 

 Copenhagen). 



A low, erect shrub. The coriaceous leaves remain for 

 more than a year on the branches, and turn reddish in colour 

 in the autumn. The buds, which are protected by scale-leaves 

 are still small even in autumn. 



The flowers, whjch are white, occur singly in the axils of 

 the upper leaves, and are drooping. Towards the apex of the 

 shoots they rather cluster together, and the subtending leaves 

 becoming smaller they approximately form a racemose inflores- 

 cence. Two ovate-acute bracteoles occur immediately below 

 the calyx of the flower (Fig. 22 C). 



After flowering, the whole of the floral portion of the shoot, 

 i. e. about one third to one half of the whole of the year's 

 shoot, dies, and then just below it long shoots, from one to 

 several, all similar in appearance, are developed while the lower 

 part of the shoot remains branchless. 



The corolla is cylindrical-urceolate, about 7 mm. long; and 



