1898J VABIA TION IN JiA NUNC UL US REPENS (Z. 



185 



Correlation of Variation 

 Calyx 

 lu every case of calyx variation, whether above or below the 

 mean, all the other whorls are al)ove the average. As there are, 

 however, only 41 specimens out of the 1000 to prove this, I do 

 not think that much importance should be attached to the results. 

 Formulae obtained from specimens having variation in calyx — 



Minus variation 



Calyx and Corolla 

 Analysis of variation in calyx and corolla — 



The calyx having practically no variation, it appears from the 

 above that if there is any superabundant calyx- or corolla-material 

 in the embryonic flower, rather than increase the two whorls alike, 

 the sepals are left unaffected, and the superabundant matter goes to 

 form more petals — third line of above table. Actually, the calyx 

 and corolla whorls of the specimens represented in that line have a 



