MUTATIONS, VARIATIONS, AND RELATIONSHIPS OF THE OENOTHERAS. 55 



FIG. 68. Correlation in the buds of Oenothera 

 lata. Length of bud-cone subject, thickness 

 of bud-cone relative. Coefficient of correlation, 

 0.83660.0171. 



FIG. 69. Correlation in the buds of Oen- 

 othera lata. Thickness of ovary sub- 

 ject, thickness of hypanthium rela- 

 tive. Coefficient of correlation, . 6400 

 0.0336 



FIG. 70. Correlation in the buds of Oenothera 

 lata. Thickness of ovary subject, thickness 

 of bud-cone relative. Coefficient of corre- 

 lation, . 5839 . 0376. 



FlG. 71. Correlation in the buds of Oenothera. 

 lata. Thickness of hypanthium subject, 

 thickness of bud-cone relative. Coefficient 

 of correlation, 0.5549 0.0394. 



