320 Origin of Each Species Considered Separately. 



The petals now stand out in the form of a cross; their 

 inner halves being still rolled up together. But it is not 



Fig. 60. Oenothera gigas. Top of a stem just beginning to 

 flower. A petal has been removed from the flower a. 

 h, a withering flower. 



long before these unfold and set the anthers and the 

 style free. 



My new species agree in all these points with the 



