WOW!
I made a Google-image search and found Clerodendrum speciosum to be the most similar. You are right Fleur, your image shows the red bracts, from which the real flower emerges.
https://www.google.cl/search?h...
I have only seen a white Clerodendrum species here and I'm impressed by the diversity of species, each prettier than the other!
What have you done, girl? Now I NEED a Clerodendrum, despite the draught
Now I will have to find out if they produce seeds.