Oenothera Lata. 411 



If there had been evident signs of the existence of 

 pollen in individual flowers among the numerous mutants 

 and their offspring which I. have artificially fertilized 

 during the course of the last six years, I must certainly 

 have seen it. But" this has never been my lot.^ 



The stigmas have also been figured and described 

 by PoHL.^ They differ from those of 0. Lamarckiana 

 by their tendency to be confluent with one another and 

 with the style. Their number is variable, as in the parent 

 species, where 4 is the normal ; but numbers up to 8 are 



Fig. 91. Oenothera lata. Young seedlings. A, showing 

 the cotyledons and the two first leaves. A', natural size. 

 B, with 7-8 leaves (Vs) two months old, seen from 

 above. The tear in the leaf to the right was caused by 

 trying to bend the leaf flat. 



not rare. As result of the concrescence just mentioned, 

 there arise in O. lata curious hand-shaped deformities. 

 The individual fingers of these hands are sometimes free 

 but sometimes fused to their tips. This deformity goes 

 hand in hand with a shortening and thickening and also 

 with a crumpling of the individual stigmata. The capa- 

 city for taking pollen and for permitting the normal 

 development of the pollen tube, doe§ not, however, seem 

 to have been impaired by these malformations. 



^ As already stated. I have lately raised a hybrid of 0. lata which 

 produces some fertile pollen, which I have now in cultivation. See 

 Section I, §3. (Note of 1908.) 



^ Julius Pohl, /. c. p. 8 and Fig. 27. 



