Hi Kenneth,
I haven't seen this particular variegation before, so it is very interesting. I have the formosana form that has the white variegation just around the edge of the leaf and I wasn't aware of any others, so thanks for sharing this. I have one of my own hybrids that has produced variegated leaves, and I know Ian Butterfield also has had an occasional hybrid that produced variegation, but overall it seems to happen very rarely with pleiones
Cheers
Paul