Is this Artabotrys hexapetalus (Annonaceae)?

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I photographed this great vine last week growing on a project site in S. Vietnam. Not sure if it was wild or cultivated there, although I didn’t see it elsewhere on the property. Looks like Artabotrys hexapetalus, the Ylang-Ylang vine, but perusing around a Google Image search for “Artabotrys hexapetalus” I’m seeing some differences in leaf and flower. Any input from readers would be greatly appreciated.

Click photos below to enlarge…