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 ûeld-notes made by me, the Greenland spe- 



Fig. 21. Saxifraga nivalis. 

 A, A flower from West Greenland (July 6, 188i). The antisepalous stamen to the left, 

 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- 

 gynous (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. E, unripe fruit 



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



Fig. 22. Saxifraga nivalis. 

 A, Young flower of S. nivalis var. tenuis 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 



KjELLMA.v in Siberia: Cape Tscheljuskin. 



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



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



normal. (E. W., 1886.) 



