MUTATIONS, VARIATIONS, AND RELATIONSHIPS OF THE) OENOTHERAS. 49 



Fxo. 52. — Correlation in buds of O. rubri- 

 nei~iis,^o. 04113. Thickness of hypan- 

 thium subject, thickness of bud-cone 

 relative. Coefficient of correlation, 

 0.7170 ±0.0259. 



Fig. 53. — Correlation in the buds of 

 O. rtibrin-ertis. No. 04137. Thickness 

 of hypanthium subject, thickness of 

 bud-cone relative. Coefficient of cor- 

 relation, .5397 ± 0.0354. 



Fig. 54. — Correlation in the buds of Oenothera gigas. Length of ovary subject, length 

 of hypanthium relative. Coefficient of correlation, 0.6237 i 3.0432. 



Fig. 55. — Correlation in the buds of O. gigas. Length of ovary subject, length 

 of bud-cone relative. Coefficient of correlation, 0.5338 ± 0.0506. 



