72 



Knud Jessen. 



figures). The stigmas are not very conspicuous or delimited 

 from the rest of the smooth upper part of the style (Fig. 

 28, i^)." LiNDMAN has investigated D.octopetala on'the Dovre 

 (Scandinavia) (1. c. Tab. IIJ, Fig. 30). Axell^ mentions 

 polygamy, writes Lindman, but he himself found hermaphro- 



Fig. 28. 



Dryas integrifolia. A, B, C, D, See text. E, l^istil. F, Apex of style with germinating 



pollen, в. Anther (Warming, 1886 a). — Dryas octopeUda. H, Rudimentary carpel of a 



male flower from Bosekop (Arctic Norway ; "/i)- 



dite flowers only. In the flowers he investigated he found 

 proterogyny to be more decidedly pronounced than is the 

 case in Central Europe according to Ricca (Att., XIV, p. 253) 

 and Müller (Alpenbl., p. 227), Lindman does not mention 

 proterandry. Ekstam (1897) records D. octopetala from Nova 

 Zembla; the diameter of the flower was 10 — 25 mm., the 



Om Anordningarna for de fanerog. växternas befrugtning, 1869. 



