1923] 



Eau: Morphological Characters in Crepis Capillaris 



233 



TABLE 5 

 Showing Results of Crossing for Diameter of Capituliim 



DISCUSSION OF RESULTS 



1. The leaves of Crepis capillaris vary in outline from a simplex 

 through a scalaris to a bipinnate type of lobing. In the first ease, as 

 evidenced by one of the parents used in the cross (fig. 1) the outline 

 is more or less entire, while the other parent in this cross represents 

 the scalaris type. The F^ progeny obtained exhibited considerable 

 variation but were always intermediate between the two extreme types. 

 In the F, there was decided segregation and since only one plant out 

 of over 250 showed characters almost similar to one grandparent, 

 there must be more than one factor responsible for the occurrence of 

 lobes as well as for the number of lobes. The cross 20.1 X 20.13 has 



