c. V. L. CHARLIER, TRIENTALIS EUROP^A. 15 



6 leaves in the rosule. 

 I II III IV v 



h\l 0,36 0,40 0,41 0,43 0,48 



h:l 



We find that the »roundness» of the leaves increases a 

 little, when the length of the leaves is decreasing. 



10. Petals. Only a few samples were examined regarding 

 the length (I) and the breadth (b) of the petals. As, however, 

 the variability of these characters seems to be much smaller, 

 than that of the characters measured above, ^ the resulting 

 values of the means are tolerably well determined. 



The individual values obtained were: 



From which we deduce 



Length of petals 



M = 7,55 ± 0,25 

 O = 0,84 ± 0,18 



G : 31 = 0,11. 



^ The coefficient of variability (= 100 -^) amounts indeed only to 11 "/o 



for the petals whereas for the characters before considered this coefficient 

 amounts to some 20 7« or 30 ^/o. 



