c. V. L. CHARLIER, TRIENTALTS EUROP^A. 5 



Taking into account the values of the mean errors we 

 find that there is no indication of a correlation between the 

 number of stamens and the number of flower-stalks. 



3. Number of petals. This number was found to agree 

 with the corresponding number of stamens, in the same 

 flower, with the following exceptions. 



1 sample had 8 petals and 7 stamens 

 1 » »7 » >> 6 » 



1 » 56» »5 » 



1 3) » 6 » »7 5 



Hence the probabilities for finding 5, 6, 7, 8 or 9 petals 

 is, practically, the same as the probabilities for the correspond- 

 ing number of stamens determined in the preceding §. 



4. Number of sepals. This number agrees with the 

 corresponding number of petals with the following exceptions 



7 samples had 7 petals and 6 sepals 



1 ;> »8 » » 6 » 



1 » » 6 » » 7 » 



The seven first named cases are, however, uncertain, as 

 I found — having then already counted some hundred samp- 

 les — that 2 sepals often hold together giving the appear- 

 ance of a single sepal. Having taken note of that, I after- 

 wards did not find any sample with 7 petals and 6 sepals. 



5. Number of leaves in the rosule. There were 321 samples 

 examined in regard to this character, the result being: 



p 



Number of samples with 5 leaves = 125 0,3894 ± 0,0272 



» » » » 6 ;> = 155 0,4829 ± 0,0279 



» » » »7 » = 28 0,0872 ± 0,0158 



» » » » 8 » = 11 0,0343 ± 0,0102 



» » » » 9 » = 2 0,0062 it 0,0044 



321 1,0000 



The typical form has 6 leaves in the rosule, occurring 

 in about 50 % of all cases. We find, however, that cases 

 with 5 leaves occur nearly equally often (39 °o). 



There is a rather strong correlation between the number 

 of leaves in the rosule and the number of flower-stalks, as 

 will be found from the following table: 



