Lithocarpus edulis (Makino) Nakai

Family: Fagaceae
English: Japanese Stone Oak
Japanese: マテバシイ (馬刀葉椎) [Matabashī]

Large beautiful evergreen tree, often seen near the coasts. The nuts, which are edible raw, mature a year after the flowers bloom.

References:
九州野山の花 片野田逸朗,2004：南方新社
米倉浩司・梶田忠 (2003-)　「BG Plants 和名－学名インデックス」（YList），http://ylist.info（ 2019年8月14日）