MUTATIONS, VARIATIONS, AND REI.ATIONSHIPS OF THE OENOTHERAS. 55 



Fig. 68. — Correlation in the buds of Oenottiera 

 lata. Length of bud-cone subject, thickness 

 of bud-cone relative. CoefiBcient of correlation, 

 0.8366 ±0.0171. 



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, 0.5839 ±0.0376. 



Fig. 71. — Correlation in the buds of Oenothera 

 lata. Thickness of hypanthium subject, 

 thickness of bud-cone relative. Coefficient 

 of Icorrelation, 0.5549 ± 0.0394. 



