It looks like my Rhine Nixe, but then I'm not that positive mine is RN :) Rhine is supposed to have a purple blush at the bottom of the foliage, if that helps. But then, when you say purple & white, mine isn't really white, just a blush of lavender. I don't have a good close up picture of it. I don't think the blooms on mine are quite 3" either, it is rather a small bloom, but I didn't measure & I don't think I have any left in bloom. 25" & M to ML season is about right though.
{{gwi:45882}}

Yours looks identical to my Rhein Nixe.

Annette

Thanks!

I'll check the base of the foliage - it may be too late in the season to see it clearly.

Penny

Great picture, ngraham.

Yes, It does have PBF!

Thanks,
Penny