Caryophyllaceæ. 



319 



rent, thin and devoid of fibrous cells, but may however 

 attain a length of 2—3 mm (Fig. E, F) ; or they may be 

 fairly normal, have fibrous cells, and well-developed, but 

 useless pollen-grains, as in the intermediate forms (Fig. c^). 





Fig. 38. Viscaria alpina. 

 A—H, from Greenland; / — K, from Norway (Altenfjord; about 70° 

 N. lat.). — ^, ^ in its second stage; a^ normal pollen-grains. B, ^ 

 with protogyny; cal.-st. have become outspread, but only one anther 

 has opened. C, ^, with only one normal anther; in all the others the 

 pollen-grains are small and abnormal (c^). Z), $, with fairly normal 

 anthers, but the pollen is worthless. The styles are withered ; the ovary 

 is evidently swollen. E and F, $ with transparent anthers. G, $ in 

 a bud; the styles are already protruding. Я, Stigmatic papillae of ^. 

 J, i^, i^ (ovules) and i^ from $. K, k^, k^ (ovules) and A-^ from ^. (E. W.) 



21* 



