201 



styles which is usually sinuate along its margin (Figs. 21, 22). 

 After rain a large collection of water, evidently containing 

 nectar, can be seen at the bottom of the flower. Scent is 

 absent (Ekstam). 



According to field-notes made by me, the Greenland spe- 



Fig. 21. Saxifraga nivalis. 

 A, A flower from West Greenland (July 6, 1884). The antisepalous stamen to thejleft, 

 has its open anther just above the stigma, which has germinating pollen-grains. The 

 anthers of the antipetalous stamens are closed. B, A younger flower which is proto- 

 gjTious (north of Norway: Tromsö; June 27, 1885); all the anthers are closed, but the 

 stigmas are ripe. C, D, Anthers from the ventral and the dorsal side. £, Unripe fruit 



(West Greenland). (E. W., 1886.) 



Fig. 22. Saxifraga nivalis. 



A, Young flower of /S. nivalis var. trnuis from Spitzbergen (July 11, 1882; A. G. Nathort); 

 the anthers are still closed; the stigmas appear to be ripe. B, Style and stigma from A. 

 C, An unusually small flower (magnified as A and E); all the anthers are open; the styles 

 are spreading so that the stigmas touch the anthers ; self-pollination will take place (Norway ; 

 Aug. 20). D, A stigma with pollen-grains; the antipetalous stamens in this flower were 

 still closed, the antisepalous were open, but still contained some pollen. Gathered by 



Kjellman in Siberia: Cape Tscheljuskin. 



E—J, Flower from West Greenland (July 28, 1885; S. Hansen); some of the anthers (B.J) 



are barren ; others (F) are open, but the pollen-grains (G) do not appear to be quite 



normal. (E. W., 1886.) 



