Eucalyptus lucasii Blakely

Tree to 12 m, or mallee to 8 m. Bark usually smooth throughout, copper-brown to white or grey, but occasionally with rough bark to c. 0.3 m. Adult leaves: lamina 6–11.5 cm long, 1.3–2 cm wide, grey-green or subglaucous; lateral veins faint, at 25°–40°; intramarginal vein up to 2 mm from margin; petiole terete, 20–30 mm long. Peduncle terete, 5–8 mm long; pedicels 2–4 mm long. Operculum hemispherical, 1–2 mm long, 2–3 mm wide; hypanthium obovoid, 3–4 mm long, c. 3 mm wide. Fruits 5–8 mm long, 4–5 mm wide.

Grows in sandy soil on plains in shrubland and open shrubland.