Japanese Maples: Why do variegated leaves curl?, 1 by doss

doss wrote:
Interesting suggestion. Isn't this new foliage? This is just some musing about it.

This is a photo of my Butterfly foliage and it doesn't curl even when it's burnt.

There are also trees that genetically curl.

See 'Green Trompengerg'
http://www.japanesemaples.com/catalog/index.php?id=2&page=2 (not variegated)

Also
'Kurui Jishi' (not variegated)
‘Higasa yama’ (variegated)
Ogon sarasa (not variegated)

But if it's just one leaf and such a new one then it may just be a fluke. It will be interesting to find out what it looks like later in the season.