I'm trying to identify this tree (it is in my neighbors yard.) This is a small offshoot of it, so it's a picture of one of the leaves. The bark is a smooth, greyish color (no pics of the bark though.) The interesting thing is that the leaves have an almost pure white underside, and the full grown trees look like silver leaves flowing in the breeze. Pretty cool looking... ;-) Anyone have any idea what kinds of trees these are?