Eucalyptus acies, commonly known as the Woolbernup mallee is a straggly shrub that is endemic to a restricted part of the south-west of Western Australia. It has smooth bark, lance-shaped leaves, club-shaped flower buds with prominent ridges on their sides, creamy white flowers and hemispherical to bell-shaped fruit.
Eucalyptus acies is a straggly mallee shrub that typically grows to a height of 1.5to and has smooth grey bark. It usually has several main stems and its young branches are more or less square in cross section. Leaves on young plants are arranged in opposite pairs, elliptic, NaNsigfig=1NaNsigfig=1 long and NaNsigfig=1NaNsigfig=1 wide with the lower surface a slighter paler green.The adult leaves are thick and coarse, 8to in length with a lanceolate blade. Starting as a blue dullish green the leaves mature to a glossy green. Adult leaves are a similar green on both sides, lance-shaped and NaNsigfig=1NaNsigfig=1 long and NaNsigfig=1NaNsigfig=1 wide on a flattened petiole NaNsigfig=2NaNsigfig=2 long. The flowers are borne in groups of up to seven in leaf axils on a flattened peduncle NaNsigfig=2NaNsigfig=2 long. The unopened buds are club-shaped, NaNsigfig=1NaNsigfig=1 long and NaNsigfig=1NaNsigfig=1 wide including the pedicel. The flower cup has prominent ridges and is NaNsigfig=1NaNsigfig=1 long and usually much longer than the operculum. The stamens are creamy white and all are fertile. Flowering occurs from September to November and the fruit is hemispherical to bell-shaped, NaNsigfig=1NaNsigfig=1 long and NaNsigfig=1NaNsigfig=1 wide.[1] [2]
Eucalyptus acies was first formally described in 1972 by Ian Brooker and the description was published in the journal Nuytsia from a specimen he collected on a hill known as Woolbernup in the Fitzgerald River National Park.[3] The specific epithet (acies) is a Latin word meaning "the point or edge of a weapon", referring to the angled branchlets of this species.[4]
The Woolbernup mallee grows in low shrubland and heath on quartzite hills and granite boulders in near-coastal areas between Bremer Bay and Hopetoun.
This mallee is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.