iQiSl 



BARTLETT— MUTATION IN OENOTHERA 



103 





/O CfT' 



Fig. 10. — Fi progeny of Oenothera p-ralincola mut. nnmmiihiria, Lexington C-21; 

 the 2 upper plants, Lexington C-21-8 and C-21-15, are mut. lorluosa; the 2 in the 

 middle row, C-21-13 and C-21-16, are mut. rubricentra; the 2 below are mut. num- 

 miilaria; the plants shown in this cvit are three weeks older than those shown in fig. g. 



