[3]Eucalyptus imlayensis is a mallee that typically grows to a height of 7 m (23 ft) and forms a lignotuber.

Young plants and coppice regrowth have stems that are more or less square in cross-section with wings on the corners.

[2][4][5][6] Eucalyptus imlayensis was first formally described in 1980 by Michael Crisp and Ian Brooker from a specimen collected on Mount Imlay in 1978 and the description was published in the journal Telopea.

Other nearby species include the rare Imlay boronia, devil's twine, digger's speedwell, Tasmanian flax-lily, rasp fern, spiny-head mat-rush, scented paperbark, common shaggy pea and blotchy mint-bush.

The main threats to the species are its small population size in a single location, damage by gall-forming psyllids and lack of seedling recruitment.