I have finally got an ID on this flower:
BORAGINACEAE Heliotropium indicum

This wild flower has haunted me for over two years. Just couldn't put a name on it. The flower
showed up when I had a load of river sand from the Mississippi river delivered to my yard. It grew from that sand and I allowed it to grow wild in my wild flower gardens.

Common names: white clary,crista de galo,heliotropo silvestre,largatillo,borraja de la tierra,herba de alacrán,pico de zope,scorpion weed,erisipelas plant,turnsoles,wild clary,cola de alacrán,flor de alacrán,cotorrera,heliotropo,clary.

Leaves lightly hairy, entire, and opposite. (length 4.2 cm) Small (0.21 cm) white flowers turn yellow in throat and are arraigned on a curled-up structre in two rows, unfurling as flowers open. Stem hairy.