starsplitter , This is a picture of my Elsa Spath taken today, it bloomed 2 days ago, the older blooms look the color of yours, and of course they do not get a lot of sun, so color can vary. I did notice after your post, I went out to look at mine, and some blooms have 8 petals and some have 6. I had never noticed before. I don't know of anything more distinguishing other than the red anthers. I hope this helps a bit.
Debra

Thanks, Debra. Interesting about the variation in petal number.

It's a good thing we don't need IDs to enjoy these beauties ;)