This one's known as Thai Lotus, but I've no idea what its Latin name might be

oh, thank you bamboo, the latin name is not so important, my son took the photo and wanted to know what it was called.

Not a true Lotus flower (Nelumbo) as the seed head is prominent at all stages in Lotus flowers and is not visible here. The petals should be broader too generally.

So my bid is Nymphaea, probably (based on colour alone) N.caerulea. Easy to remember, as the second part is the same as the common Passiflora!

I think that one of the common names is Egyptian Water Lily...................

Thanks meanie, it reminded me of a passion flower, i love the way it glows.