Eucalyptus websteriana is a mallee that typically grows to a height of 4–5 m (13–16 ft) with a spreading habit, and forms a lignotuber.

The adult leaves have a distinctive heart shape and the tree has a compact crown, providing lightly dappled shade that benefits plants in the undergrowth.

[3][4][5] Eucalyptus websteriana was first formally described in 1916 by Joseph Maiden in the Journal and Proceedings of the Royal Society of New South Wales from specimens collected by Leonard Clarke Webster, a pharmacist and doctor who lived in Kalgoorlie and sold botanical specimens to the British Museum of Natural History.

[2] This mallee is found on rocky rises in the Goldfields-Esperance region of Western Australia in an area centred around Kalgoorlie.

[3] Its range extends to the western fringe of the Great Victoria Desert to the east of Cosmo Newberry down to around Kambalda and Norseman in the south west where it grows in rocky soils.