This is a Passion flower (Passiflora edulis), growing from a vine trailing into my garden. I have picked one to photograph indoors. All are stacked images.
BTW, these are the passion fruits which develop from this flower. They are green initially, but turn yellow when ripe.
Equipment used: Olympus EM-5, Coastal Optics 60mm F4, Baader U filter, Baader UV-IR cut filter, IDS1 & 2 filters, Quantum X2D flash, Nightsearcher UV torches