Ginkgo biloba 'Kristina' is a dwarf cultivar originating from Illinois in the U.S.A discovered by Dax Herb. At the present time the sex is not known. There are currently no estimates of eventual height and spread. The leaves are thick, often larger than the species. It has an upright, but irregular habit. I the autumn the leaves turn a rich butter yellow. 

Ginkgo biloba 'Kristina'