Eucalyptus hawkeri

Mallee or slender tree to 15 m tall; bark rough, dark grey-brown, box-type, extending to mid-trunk, smooth above. Juvenile leaves petiolate, alternate, narrowly lanceolate to narrowly elliptic, to 12 cm long, 1.8 cm wide, slightly discolorous, dull, blue-green or somewhat glaucous; adult leaves petiolate, alternate, narrowly lanceolate or lanceolate, sometimes falcate, 7–12 cm long, 0.8–1.7 cm wide, glossy, olive-green, sometimes slightly bluish; side veins acute; reticulation dense with numerous, large, irregular island and intersectional oil glands. Inflorescences axillary, simple; peduncles to 1.1 cm long, 7–11-flowered; buds pedicellate, ovoid or fusiform, to 0.7 cm long, 0.4 cm diam., often glossy, no scar; operculum conical; stamens irregularly inflexed; anthers adnate, globoid; ovules in 4 vertical rows; flowers white. Fruit pedicellate, subcylindrical or barrel-shaped, to 0.7 cm long, 0.4(–0.5) cm diam.; disc descending; valves 3 or 4, below rim; seed dark brown, ovoid and slightly flattened, surface finely reticulate, helium ventral. Flowers autumn.