Yup, dragon plant. must be seven years old and really big to bloom. Blooms maybe twice a year, HUGE flowers that are not frgrant. Flowers open way after dark, and are spent, wilted by 9 am the next morning.
I am trying to get some different varieties so they'll pollinate, I want fruit!! Seems to be only one type on this island, needs cross pollination. There's a yellow fruited kind I might buy off ebay----