10 ARKIV FOR BOTANIK. BAND 12. N:0 14. 



8. Flower-stalk. The length of the flower-stalk was mea- 

 sured for 311 samples. 



Length of the Flower-stalk. 

 N = 311, iü = 3 mm. 



The class-breadth was taken to 3 mm. The numerical 

 computation gave: 



M = 34^^76 ± 0°^^34 

 (7=6 ,09 ± ,24 



•.* g: 31 = 0,175 



The frequency curve is in this case, as in most of the 

 others, of type A. 



The thickyiess of the flower-stalk was measured only in 

 28 samples. 



Thickness of the Flower-stalk. 



,05. 



The calculation of the characteristics gave: 



M = 0™°^,359 ± 0'°'^,042 

 (7 = ,042 ± ,029 



'.• o'.M = 0,12 



