Eugenia boninensis Hayata ex Koidz.

Metrosideros boninensis is a species of flowering plant in the family Myrtaceae.

[1][2] M. boninensis is classified as 'endangered' in the Japanese Red Data Book and, although there were 326 plants recorded in 2004, genetic diversity of M. boninensis is extremely low.

The species was first formally described by botanist Bunzo Hayata in 1918, as Eugenia boninensis.

This was corrected to M. boninensis in 1938 by Takasi Tuyama.