Are you ready? It's time for our 14th annual photo contest! Enter your best pictures of the year, for a chance to win a calendar and annual subscription here. Hurry! Deadline for entries is October 21.
Gosh it looks like trying to ID a water lily is as hard as trying to ID a daylily or iris. I'll probably never be sure. From looking at the pictures on your link I'd say the Lemon Chiffon is the closest only because it has the speckled leaves.
I've had terrible luck this year with plants not being what their supposed to be! ~ And they haven't been trades but plants and seeds purchased from supposedly reliable sources.