LoEw, е., 1894, Blutenbiologische Floristik der mittleren und nördlichen 



Europa sowie Grönland. Stuttgart. 

 Schröter, C, 1904—1908, Das Pflanzenleben der Alpen, eine Schilderung 



der Hochgebirgsflora. Zürich. 



Lange, Joh., 1880, Conspectus Florae Groenlandicæ. (Meddelelser om Grøn- 

 land, Vol. 3.) 

 — 1887, Tillæg til Grønlands Fanerogamer og Karsporeplanter. (Ib.) 



KoLDERUP Rosenvinge, L., 1892, Andet Tillæg til Grønlands Fanerogamer 

 og Karsporeplanter. (Meddelelser om Grønland, Vol. 3, pp. 647 — 749.) 



Ord. Ericaceæ. 



Ledum palustre L. 



with f. decumbens Ait. and f. groenlandica (Oed.). Lange, Con- 

 spectus, p. 89. 



Kjellman, 1883, p. 505. Warming, 1884, pp. 45, 47, 101. 1885, 

 p. 189, fig. 12, 13; p. 205. 1886b, pp. 118, 125; 1886—87, p. 110. 

 Poppius, 1903, p. 43. Haglund, 1905, p. 28. Sylvén, 1906, p. 133, 

 tab. IX. 



Material from West Greenland and Finmark. 



A low shrub, in favourable localities attaining a height of 

 as much as 1 m. ; in the Arctic regions often found as a dwarf 

 shrub (usually forma decumbens) with prostrate branches, and 

 almost hidden by moss and lichens. The lower part of the stem 

 is prostrate and curving, forming many, usually very slender 

 roots; offshoots may be produced, but propagation by seed 

 appears to be its normal mode of reproduction. 



I have not observed runners or stolons with scale-leaves; 

 the growth of the primary root appears to be very strong, and 

 according to Haglund a great number of branches arise more 

 or less irregularly from the base of the primary shoot. 



The foliage-leaves remain green two (or three) years; the 

 under sides are densely covered by woolly hairs of a rusty 

 colour. The margins are more or less revolute (Fig. 1). The 

 size of the leaves, both as regards breadth and length varies 



