There are several things that could be causing the loss of flowers from Linda's night-booming jasmine (Cestrum nocturnum).    From Wordnik.com.  [TCPalm Stories] Reference

Cestrum nocturnum?.    From Wordnik.com.  [Night Blooming House Plant] Reference

Cestrum nocturnum.    From Wordnik.com.  [Chapter 11] Reference

Cestrum, 110.    From Wordnik.com.  [Prodromus stirpium in horto ad Chapel Allerton vigentium] Reference

The secondary vegetation in the area includes Cecropia, Cestrum, Crton, Inga, Isertia, Trema, and Vismia \).    From Wordnik.com.  [Cauca Valley dry forests] Reference