Brugmansia, it would seem.
I could be wrong, of course....
I think that is the right Latin name. It has common names. Angel's trumpet, Devil's trumpet. All parts are poisonous. Wash your hands and pruners after handling. It was a big thing for awhile the kids were eating or smoking parts of the plant because it is supposed to be hallucinagenic. They landed up in the hospital or dead from doing it. Some people call it Datura, but I think that is the purple low growing one.
I know it as Josh put it too. Common name "Angels Trumpet"
I grow Datura, and as far as I know it's only grows as a bush, but could be wrong. And it's know as the "Devils Trumpet"