Ginkgo biloba 'Variegata'

Refers to a group of specimens and cannot be tied to a specific specimen.
Many variations in the extent of varigation. Usually running parallel to leaf structure. Coloration may be yellow or white on green and vary in the amount of coloration. Nortorously known for instability and will almost always revert to all green. New cultivars are being introduced that may be better. Only time will tell.

It has been reported that the specimens with yellow coloration seen to be more stable.

Leaves with variegation
Photo by Bill Barger
A variegated form known as Ginkgo biloba 'Rainbow' in the Kral garden in Rochester, NY.
Photo by Larry Nau