This beautiful flower is a sweet potato. I did not realise that the plant is a vine, related to bindweed and morning glories. Like morning glories each flower lasts only a day.
That's pretty. It's similar to the white flowers of Japanese knot weed. I do love sweet potatoes 😋. Are you growing them?
I just have this one plant that I bought from curiosity but now I see the beauty of the flower I will leave the tubers in the ground and it will sprout again next year.