38 MUTATIONS, VARIATIONS, AND RELATIONSHIPS OF THE OENOTHERAS. 



FIG. 16. Correlation in the buds of Oenothera la- 

 marckiana, No. 04129. Length of ovary subject, 

 thickness of ovary relative. Coefficient of cor- 

 relation, 0.4766 0.0522. 



FIG. 17. Correlation in the buds of'Oeno- 

 thera lamarckiana, No. 04113. Length 

 of ovary subject, thickness of ovary rel- 

 ative. Coefficient of correlation, 0.2724 

 0.0492. i 



FIG. 18. Correlation in buds of Oenothera lamarckiana from Hilversum. 

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

 correlation, 0.5797 0.0354. 



