[1] It is a tree endemic to Mount Tabwemasana on the island of Espiritu Santo in Vanuatu.

It has an irregular flat-topped crown and is sympodially branched, and occasionally has a coppiced form.

Young leaves and twigs are covered in fine silky grey hair.

[2] Metrosideros tabwemasanaensis is known only from Mount Tabwemasana, the highest peak on the island of Espiritu Santo and in Vanuatu.

It grows on ridges in upper montane forests from 1500 to 1870 meters elevation, in association with Pterophylla spp., Syzygium spp., Geissois denhamii, Quintinia spp., and Ascarina spp.