Hi...
Have you seen this flower before?
In Sri Lanka, this flower is called "Madhu". A little hard to find. The circumference of this flower is about 20 inches. Here the petals are not separated from each other. And the petals of this flower are very weak in terms of strength. This is a night-blooming flower. This plant grows as a vine and grows large. More than one flower blooms here at a time. This flower is single-white in color.
Thank you..
@hive.rana