|Similar Eucalyptus dura, Eucalyptus olsenii, Eucalyptus triflora, Eucalyptus notabilis, Eucalyptus cretata|
Eucalyptus doratoxylon, commonly known as the spearwood mallee, is a eucalypt that is native to Western Australia.
The Noongar peoples know the tree as Geitch-Gmunt.
The mallee typically grows to a height of 1.4 to 6 metres (5 to 20 ft) and has powdery white, smooth bark. Adult leaves are opposite, glossy, green, thin and discolorous. The leaf blade has anarrow lanceolate shape and is basally tapered. It blooms between August and March producing white-cream flowers. The simple axillary conflorescence has three to seven flowered umbellasters with terete peduncles. Buds are rostrate with a calyptrate calyx that sheds early. Fruits form later that are globose with a depressed disc.
It is found on hills and among granite outcrops along the south coast in the Great Southern and Goldfields-Esperance regions of western Australia where it grows in sandy loam or white-grey sandy soils.
The species was first formally described by the botanist Ferdinand von Mueller in 1880 in the journal Fragmenta Phytographiae Australiae from samples collected by G. Maxwell in the Kojoneerup district.