VARIATION IN DIFFERENT PORTIONS OF PLANT. 



27 



VARIATION IN DIFFERENT PORTIONS OF THE PLANT. 

 In this section of the paper the material will be treated according 

 to the following scheme: 



Variation in whorls on the main stem. 



Variation in whorls on primary branches. 



Variation in whorls on secondary branches. 



Variation in whorls on tertiary and quaternary branches. 



Relative size of the different divisions of the plant and variation in this character. 



It will be understood throughout that when the whorls on a particular 

 division of the plant are referred to, all unmutilated whorls on that 

 division are included. 



Table 5. — Frequency distributions for variation in leaf-number in main-stem whorls. 



