258 



ANDERSON 



PR-M 



Ear row 



number 



1416 = 

 18-20 = 



Condensation 

 of tassel 



1.6-2.2 = 

 23-29 = 



=o 



Tassel branch 

 number 



17-22 =b 

 23-28 = 



• = PR 

 = PR-M 



4.1-5.0 5.1-6.0 6.1-7.0 7.1-8.0 8.1-9.0 



Leaf width at right angles to sheath midrib attachment 



Fig. 5-6. — Fig. 5. Comparable leaves from two plants of Lindstrom's mutant 

 inbred PR-M compared with two from plants of the inbred PR. From greatly re- 

 duced tracings of herbarium specimens collected from Lindstrom's experimental 

 plot. — Fig. 6. The four specimen leaves of fig. 5 analyzed efficiently by a pictorial- 

 ized scatter diagram. The leaf measurements used on the X and Y axes were de- 



