Eucalyptus acies also known as the Woolbernup mallee is a straggly shrub that is endemic to the Great Southern region of Western Australia. The shrub typically grows to a height of 1.5 to 3 metres (5 to 10 ft). It has grey bark with a smooth surface and pith glands present. The plant produces creamy-white flowers between September and November The adult leaves are thick and coarse 8 to 13 centimetres (3 to 5 in) in length with a lanceolate blade. Starting as a blue dullish green the leaves mature to a glossy green.