Fig. 67. Twig from Flower-Cluster of Yncca Whipplei 



I, Bud; 2, flower open; 3 flower open previous night, but now closed; 4, the little white moth 

 Fronubayuccasella flying to the flower; 5, the moth pushing down bail of pollen into the 

 funnel of stigma; 6, stigma enlarged. (After Kerner) 



