Peaches in Hainan. The big tree with black fruit in Hainan is called Hainan Grape, and it is called Black Mozi in Hainan dialect. Its scientific names are Zidong Tree, Ebony Tree, Wukou Tree, Ebony Tree, Ebony Tree and Black Mozi Tree. It belongs to Myrtaceae grape and is suitable for growing in tropical or subtropical regions. Now it has been artificially cultivated for viewing and its fruit can be eaten raw.