46 



The Journal of Heredity 



A SIMPLE-LEAVED VARIATION 



P'"iGURE 20. This plant represents the second vegetative generation of a simple-leaved 

 strain discovered in the White Mountain variety in 1920. A tuber of this plant gave 

 rise to the plant shown in Figure 21, the leaves of which were partly of the normal form, 

 but the vegetative progeny of the latter were all simple leaved. 



