In my opinion this plant is DIOSPYROS LOTUS, the "Date Plum", which is often used as a rootstock for grafting Diospyros kaki.
In MY opinion DIOSPYROS WILSONII does NOT exist at all, as a really species: I cultivate both: Plants, that I received named as D. lotus and plants, named D. wilsonii, and I could NOT find any differences yet in the phenotype of these "different" species, both are dioecious (male an female flowers on different individuals), both are completely hardy here in Austria, both bear small fruit with seeds, if polinated, and seedless, parthenocarpic, if not pollinated...
So, maybe there is someone here out, who can tell me the difference and can convince me of the existence of D. wilsonii as a species...? I would be glad about this...
