Nice one ! I was going to pick up a exact same looking one last week called 'Cool Wind' - Click here and chose white color
I may have to go back and see if there are any left! ...
Is that one the perennial hibiscus? The ones that die off in the winter and reseed themselves for the spring? Their stems are usually more lanky and their blooms can become the size of saucers. It looks like it by the spadix.
Reminds me of a Rose of Shannon