Genetical Studies on Oenothera. V. 



177 



the younger tapering to relatively short 

 petioles, crinkled (Fig. 10). 



Rosettes resembling more closely those 

 of biennis and therefore patroclinous 

 (compare Fig. 10 with Fig. 3). 



tapering to relatively long petioles, plane 

 (Fig. 11). 



Rosettes similar to those of muricata 

 and therefore patroclinous (compare Fig. 

 11 with Fig. 4). 



Fig. 7. Mature plant of muricata. Showing branches from the rosette 

 less numerous and relatively shorter than in bierinis; a foliage of narrow- 

 elliptical, revolute or keeled leaves; tips of branches frequently nutant. 

 Contrast with Fig. 6, biennis. 



Evidence of a blend in the varied forms 

 of the leaves, relatively not so broad as 

 in biennis. 



Rosettes markedly smaller than those 

 of the parents. 



Evidence of a blend in leaves, less 

 clearly toothed and somewhat broader 

 than those of muricata. 



Rosettes markedly smaller than those 

 of the parents. 



