128 



Segerstedt, p. 20. О. G. Petersen, 1901, p. 80. Madry, 1887, 

 p. 105. Woodhead, 1904— 06, pp. 387-391. 



I have had specimens for investigation from the following 

 localities: — Norway: (Finmark) Tromsö (June 6,1884, E. W.); 

 (Dovre) Vaarstien (July 15, 1887, E.W.); (Dovre) Kongsvold (July, 

 1887, E.W.). Sweden: Stockholm (1888, E. W.). Denmark: 

 diff. localities. 



Fig. 39. Vaccinium Myrtillus. 



Transverse section of stem. (Denmark: Ruder Hegn (л\ооа).) X 180. (Phot.) 



The leaf is of jthe same type, both morphologically and 

 anatomically, as that of the preceding and that of Arct. alpina. 

 No special protective hairs occur, nor is a wax-layer present. 



The upper and lower epidermis have very thin outer walls 

 and no thick cuticle nor cuticularised layer. The lateral walls 

 are undulating. At the margin of the leaf and along its larger 

 veins the leaf-tissue appears to be prolonged into characteristic 



