I marked that side of the pot so that eventually I could collect tubers derived from the area where that sector occurred. The second year I grew it in a mostly sunny spot and the white regions burned badly. Since then I have grown it in dappled shade where it does just fine. This plant produced a leaf 2 feet in diameter in its 3rd year. The variegation is unusual.
Some regions are nearly white with green flecking.
In other leaves a beautiful silver white edge pattern sometimes appears. The plant was grown pot bound to encourage tubers to form. To date I have recovered about a two dozen tubers. Others have some green but may be too weak to grow a big tuber. Some were unevenly variegated and may eventually produce good offspring but time will tell.