The old "foliage only" thread wasn't generating a whole lot of responses, so here's what came out when my recent acquisition bloomed. Any guesses on an ID?
As Des already said, it is difficult (if not impossible) to correctly identify Hybrids only based on a picture. Your plant look like one of the Lc. Orglade's Grand clones. However, there many other "semi-alba" hybrids with similar flowers...