Dorrigo White Gum

Eucalyptus dorrigoensis is a tree that typically grows to a height of 30 m (98 ft) and forms a lignotuber. It has smooth, slightly powdery white, grey or pink bark, sometimes with slabs of rough bark near the base. Young plants and coppice regrowth have warty stems, the leaves arranged in opposite pairs and egg-shaped to broadly lance-shaped, 35–80 mm (1.4–3.1 in) long and 13–40 mm (0.51–1.57 in) wide. Adult leaves are the same colour on both sides, lance-shaped to curved, 60–220 mm (2.4–8.7 in) long and 12–27 mm (0.47–1.06 in) wide on a petiole 5–25 mm (0.20–0.98 in) long. The flower buds are arranged in groups of seven in leaf axils on an unbranched peduncle 4–10 mm (0.16–0.39 in) long, the individual buds on a pedicel 1–3 mm (0.039–0.118 in) long. Mature buds are oval, 4–5 mm (0.16–0.20 in) long and 2–3 mm (0.079–0.118 in) wide with a conical operculum. Flowering occurs in May and the flowers are white. The fruit is a woody conical or hemispherical capsule 3–4 mm (0.12–0.16 in) long and 4–5 mm (0.16–0.20 in) wide with the valves extended beyond the rim.

Eucalyptus dorrigoensis grows in deep soils in valley forests from near the upper Macleay River to east of Tenterfield and mainly near Dorrigo.