Mallet to 10 m tall, stems fluted. Non-lignotuberous.Bark smooth throughout, shiny, greyish green over coppery to red-brown.Branchlets copiously white waxy; oil glands present in the pith.Juvenile growth (coppice or field seedlings to 50 cm): stems rounded in cross-section, glaucous except for the very base which will have started to develop adult bark; juvenile leaves always petiolate, opposite for ca 5 nodes then alternate, lanceolate, 5.5–9 cm long, 1.5–2.5 cm wide, dull, blue-green to gklaucous. Adult leaves alternate, petioles 1–2.5 cm long; blade lanceolate to narrowly so, 5.8–13 cm long, 0.8–2.3 cm wide, base tapering to petiole, margin entire, apex acute, concolorous, dull, glaucous, but weathering glossy, green, side-veins at ca 45° to midrib, reticulation moderate, intramarginal vein more or less remote from margin, oil glands very irregular in outline, island. Inflorescence axillary unbranched, peduncles flattened, 0.5–1.4 cm long, buds 7, usually shortly pedicellate (pedicels 0–0.2 cm long). Mature buds ovoid (0.8–1.3 cm long, 0.5–0.6 cm wide), glaucous at least on the pedicel and often on the hypanthium, scar present, operculum bluntly to acutely conical, all stamens inflexed but to varying degrees, anthers narrowly oblong, versatile, sub-basifixed, dehiscing by longitudinal slits, style long and straight, stigma blunt, locules 4, the placentae each with 6 vertical rows of ovules. Flowers white. Fruit pedicellate or sessile (pedicels 0–0.1 cm long), obconical to hemispherical, 0.4–0.7 cm long, 0.6–1 cm wide, disc level to descending, valves 4, exserted prominently. Seeds pale to dark brown, 1–2 mm long, ovoid or flattened-ovoid sometimes polygonal in outline, dorsal surface deeply, narrowly and closely fissured, margin ragged, hilum ventral. (Seedcoat often referred to as being honey-combed.)Cultivated seedlings (measured at ca node 10): cotyledons Y-shaped (bisected); stems squared to rounded in cross-section, slightly warty, slightly waxy; leaves always petiolate, opposite for ca 5 to 7 nodes then alternate, lanceolate, 5.5–7.5 cm long, 1.3–2.5 cm wide, grey-green with a slight waxy bloom..
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Adult leaves glaucous. Peduncle glaucous; pedicels absent. Buds glaucous. Fruits sessile.