Annonaceae, Artabotrys hexapetalus, Ylang-Ylang vine
I got seed from a good friend of mine, the only other person I know who has this species. He mentioned something about it being the true Ylang-Ylang. I have found it identified as Artabotrys hexapetalus, originating in India. The plant grows like a sprawling shrub that will turn in to a vine if it is given a support structure. I planted this one next to an Orchid tree (Bauhinia) and a grafted Rambutan and it has effectively grown up into each of them. Although not apparent in the photos, the branches have hook-like protrusions (like Una de Gato (Unicaria), less sharp). These aid the sprawling branches in climbing.
I currently have a large batch of seeds germinating.