Tree to 8 m tall. Forming a lignotuber.Bark rough and moderately thick over trunk and branches to ca 2–4 cm diameter then flaking off, tessellated, grey to grey-brown.Branchlets smooth (glabrous); long oil ducts sometimes visible in the pith.Juvenile growth (coppice or field seedlings to 50 cm): stems rounded in cross-section, smooth; juvenile leaves always shortly petiolate, opposite to sub-opposite becoming alternate, narrowly lanceolate, 5.5–10.5 cm long, 0.8–1.6 cm wide, base tapering to petiole, apex rounded or pointed, green, discolorous, glabrous, slightly glossy.Adult leaves opposite, sub-opposite or alternate, petioles 0.8–1.6 cm long; blade lanceolate, 7.3–12 cm long, 1–2 cm wide, base tapering to petiole, margin entire, apex finely pointed, strongly discolorous, glossy, darker green above, paler below, smooth, side-veins greater than 45° to midrib, reticulation dense to very dense, intramarginal vein present but very close to margin and more easily seen from underside, oil glands obscure or sparse and island.Inflorescence terminal compound, peduncles slender 0.5–1.4 cm long, buds 7 per umbel, pedicels 0.5–0.8 cm long. Mature buds obovoid to pyriform (ca 0.8 cm long, 0.5 cm wide), smooth and shiny, scar absent (both opercula shed together at flowering), operculum shallowly rounded to conical, stamens inflexed, all fertile, anthers oblong, dorsifixed, versatile, dehiscing by longitudinal slits, style long and straight, stigma blunt, locules 3, the ovules arrangement unknown. Flower colour not known.Fruit pedicellate (pedicels 0.2–0.8 cm long), urceolate to ± barrel-shaped, with obvious neck but not flared at the rim, 0.9–1.4 cm long, 0.7–1 cm wide, smooth, disc descending vertically, valves 3, enclosed.Seeds brown, 5–8 mm long, ellipsoidal with terminal wing, hilum ventral.Cultivated seedlings (measured at ca node 10): cotyledons reniform; stems rounded in cross-section, setose with short bristle-glands only at lowest nodes, smooth after node 4–7; leaves sessile to very shortly petiolate, opposite, linear to elliptic-oblong or narrowly lanceolate, 7–13.5 cm long, 0.8–1.4 cm wide, base tapering to petiole, green, discolorous, glossy by node 10; only sparsely setose on lower leaves, becoming free of setae after node ca 7.
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