38 MUTATIONS, VARIATIONS, AND RELATIONSHIPS OF THE OENOTHERAS. 



Fig. 17. — Correlation in the buds oV Oeno- 

 thera lamarckiana. No. 04113. Length 

 of ovary subject, thickness of ovary rel- 

 ative. Coefficient of correlation, 0.2724 

 ±0.0492. 



Fig. 16. — Correlation in the buds of Oenothera la- 

 marckiana, 'i^o. 04129. Length of ovary subject, 

 thickness of ovary relative. CoeiBcient of cor- 

 relation, 0.4766 ±0.0522. 



Fig. 18. — Correlation in buds of Oenothera lamarckiana from Hilversutn. 

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

 correlation, 0.5797 ± 0.0354. 



