It has fibrous, rough grey or yellowish grey-brown or orange-brown-grey coloured bark throughout.

It flowers between July and October producing axillary unbranched inflorescences but can appear to be arranged in clusters toward the end of the branch.

[3] The species was first formally described by the botanists Lawrence Alexander Sidney Johnson and Ken Hill in 1992 as part of the work "A taxonomic revision of the White Mahogonies, Eucalyptus series Acmenoideae (Myrtaceae)" as published in the journal Telopea.

[4][5] The specific epithet is taken from the Latin word mediocris meaning "middling" in reference to medium-sized habit of the tree.

[5][7] The tree is native to an area of inland Queensland from around the Carnarvon Range in the north east extending south to the Atherton Tableland.