MUTATIONS, VARIATIONS, AND RELATIONSHIPS OF THE OENOTHERAS. 45 



Fig. 40. — Correlation in the buds of Oenothera ru- 

 brinenis, No. 04113. Length of ovary subject, 

 thickness of ovary relative. Coefficient of correla- 

 tion, . 5957 ± . 0344. 



Fig. 41. — Correlation in the buds of O. ruhrinervis , 

 Xo. 04137. Length of ovary subject, thickness 

 of ovary relative. Coefficient of correlation, 

 0.3357 ±0.0495. 



Fig. 42. — Correlation in the buds of Oenothera rubrinervis.tio. 0-i\\3. Length 

 of hypanthium subject, length of bud-cone relative. Coefficient of correla- 

 tion, 0.3752 ±0.0458. 



