92 
Warmine, 1887, p.109; idem., 1885, pp. 39—42. BörGEsEN, 
1895, pp.236— 237. Liprorss, 1907, p.75. SEGERSTEDT, 1894, p. 22. 
Ampronn, 1890, p.71. O. G. Perersen, 1901, p. 78. AÄBROMEIT, 
1899, p. 54. 
I have had specimens for investigation from the following 
localities: — West Greenland: Sukkertoppen (Aug. 16, 1884, E.W.); 
Amarortalik (July 30, 1884, E. W.); loc. ign. (July 11, 1884 and 
July 28, 1885, S. Hansen). Finmark: Bosekop (E. W.). 
Fig. 9. Ledum palustre var. decumbens. 
1,2, Transverse sections through different parts of the leaf. x, Transparent cells. 3, Stoma. 
4, Spongy parenchyma shewing the transparent cells. 5, 6, Glandular hairs seen laterally 
and from above. (E. Warming.) 
The leaf. The epidermis of the upper surface has much 
thickened outer walls with cuticle, and beneath that a cuticularized 
layer; the lateral walls are polygonal and have pores; afew glandular 
hairs occur. The outer walls of the lower epidermis are less 
thickened on account of the dense hairiness of this surface. 
According to Livrorss, chlorophyll grains occur in the upper 
