266 



Commonly distributed in all formations as well on the coast 

 as in the interior. 5 — 250 ctm. long, up to 5 ctm, thick stems, as 

 a rule adpressed, but in copses they may arise to 105 ctm. above 

 the earth. The shoots distinctly separated in long-shoots, upright, 

 stretched and straight with most often large oval leaves, and crooked 

 knotty lateral short-shoots with oval lanceolate leaves. The hairiness 

 of the leaves is much varying from thickly lanate or silkhairy to 

 almost glabrous; the former are the most common on the short 

 shoots, in heath and table-land, the latter in copses and on herby 

 slopes (var. subarctica Lundstr.); but are not rarely found together 

 in the same specimen; especially where a stem with hairy narrow 

 leaves is broken, broad, obtuse glabrous leaves are seen on the 

 rank long-shoots, shooting ont from the stub. The hairiness varies 

 also much according to the season. The styles, the hairiness of 

 the ovary and the form of the nectary are varying very much, but 

 not in a parallel way (as stated by Lundstrøm: Die Weiden Novaja 

 Zemljas) so that no certain systematic separations can be built on 

 these circumstances. The limit between S. glauca, var. subarctica 

 and S. groenlandica is as stated by Lundström and Rosenvinge 

 incertain and these two species ought certainly to be united to one 

 single; I have not done it here because of biological differences 

 between them as to habits and habitat making one hardly never 

 doubt in nature which of the two plants one is before. 



Faffl. 30. Betulaeeae. 



115. Betula nana L. 



Lge. Gonsp. Fl. Groenl. p. 1 12 & 280, Berlin Kärlväxter p. 64, 

 Hartz Fanerog. p. 392. 



Not common and only in the interior, in heath and table-land, 

 most as espalier, but appearing often gregariously in the habitat, 

 so that it is a considerable constituent part of the vegetation. Up 

 to 20 ctm. raised above the earth, the stem up to 2 m. long, but 

 as a rule but 40 — 60 ctm. b'lowers from the 20*^ of June till the 

 15'^ of July, sets ripe fruit. 



Kangerdlugsuatsiak, Kingorsuak, common, Akiliarisek, Amagâ in 

 Sermilik, Ikerasausak, Tunok, Sierak, Kordlortok So, Amakà (numerous), 

 Sarfakajik, Amagâ, Udkigsfjæld, Elvbakker, Kong Oscars Havn (Berlin)!, 

 Tasiusak (Bay)!, Tasiusarsik and Orsuluiak (Knutsen)!. 



