Leaves are decussately opposite, thin chartaceous, ovate oblong, acuminate at the apex, shallowly serrate on the margin.

small purple flowers open densely in June to July.

Fruits ripen to purple in autumn.

This tree is rather common on sunny mesic sites in the warm temperate zone.

The wood is used for handles of instruments, sticks, chopsticks.

Distribution ; Honshu, Shikoku, Kyushu, Korea