182 



loped small laminae, was gathered by Porsild along a stream 

 on Disko). 



It can scarcely be said to be the rule for the leaves to 

 pass the winter fully developed and in a green condition; but 

 yet there is some possibility of this occurring — the leaves 

 being sometimes very large and fresh during the flowering 

 period. 



The flowers are snow-white, large and fairly conspicuous. 

 According to LiNDMARK 6- or 7-merous flowers are often found. 



Fig. 9. Saxifraga cernua. (From Greenland.) 



A, The upper part of an inflorescence (the hairs are omitted). B, Longitudinal section of 

 the terminal flower; two antisepalous stamens have their anthers open. C, A proto- 

 gynous flower (perhaps a transitional form to pistillate flowers). /), Anther. E, Petal; the 

 venation may be less profuse. F, A decidedly protandrous flower; the anthers of the 

 antipetalous stamens have been emptied, an open anther of a antipetalous stamen may be 

 seen situated over the stigmas, but the latter are still unripe. (E. W., 1886.) 



At first, when the petals are fairly erect, the diameter is small, 

 12 — 15 mm.; but as the petals gradually bend further out, and 

 the corolla becomes more funnel-shaped, the diameter increases, 

 almost to 20 mm. 



The terminal flower is usually more or less irregular, as 

 the petals of the one side are smaller than those of the other 

 {¥\g.9 Ä, B, C). The petals may be emarginate, or rounded-off 

 at the apex (Fig. 9 E). 



