173 



The species of Saxifragaceæ mentioned in the following are: 



Saxifraga aizoides 173 



— Aizoon 176 



— cernua 178 



— flagellaris 184 



— groenlandica 187 



— hieraciifolia 194 



— Hirculus 196 



— nivalis 198 



— ojypositifoUa 203 



— rivularis 210 



— stellaris 216 



— tricuspidata 222 



Chrysosplenium alternifoUum et var. 



tetrandrum 226 



* Saxifraga aizoides L. 



Warming, 1886 a, p. 26. Lindman, 1887, p. 61. Ekstam, 1894 b, 

 p. 426; 1897, p. 129; 1898, p. 15. Jcngner, p. 237. Abromeit, p. 37. 

 G. Andersson och Hesselman, p. 28. Düsen p. 34. A. Cleve, p. 48. 

 LiNDMARK, p. 27, pi. 1, figs. 22—23; pi. II, figs. 1—3. Günthart, 

 p. 75, pi. II, fig. I. Sylvén, p. 230. 



Material in alcohol from South Greenland (Kornerup, 

 A. Berlin, Mrs. Lundholm); from Norway: Tromsø, Finmark 

 (Warming); Sweden; Siberia (Kjellman); Nova Zembla and Spitz- 

 bergen (Nathorst). 



A creeping herb, the primary root of which dies in the 

 course of a few years. By means of the creeping stems, which 

 are furnished with many slender, adventitious roots, it may 

 spread rather thickly over fairly large areas, by preference over 

 those which are watered by a stream, or by melted snow. Many 

 lateral shoots may be developed from a single stem, and there 

 is no regularity as regards the situation and strength of the 

 lateral shoots. Vegetative propagation takes place abundantly 

 by the lateral shoots becoming independent, the connecting 

 stems gradually dying away at the hinder end. 



