118 
Vaccinium Oxycoccos L. et var. microcarpum (Figs. 29—31.) 
Syn. Oxycoccos palustris Pers. 
SEGERSTEDT, p. 27. O.G. PETERSEN, p. 81. Hesserman, 1900, p. 27. 
The specimens I have had for investigation are from the 
following localities: — West Greenland: Godthaab (1895). Fin- 
mark: Alten (July 7, 1885). Norway: (Finmark) Bosekop; (Dovre) 
Vaarstien (July 13, 1887). Denmark: bog at Lyngby and Farum; 
(Jutland) Bjærget in Thy. 
Fig. 29. Vaccinium Oxycoccos. 
The leaf. Cf. note, p.81. (Denmark: Lyngby bog.) (E. Warming.) 
The leaf has no special protective devices as, for example, 
hairs; a wax-layer occurs only upon the lower surface. 
Both the upper and lower epidermis are very much thickened 
with cuticle and beneath that a cuticularized layer; their cells 
have wavy lateral walls and contain chlorophyll grains. The 
stomata, which are confined to the lower surface, are on a level 
with the epidermis and occur in considerable numbers relatively 
to the size of the leaf. This should probably be connected 
