Tree to 10 m tall, occasionally smaller and mallee-like. Forming a lignotuber. Bark rough and tessellated to the small branches, pale grey-brown to brown to orange-brown. Branchlets pendulous. Juvenile growth (coppice or field seedlings to 50 cm): stems round in cross-section, smooth (losing scabridity very early in the field); juvenile leaves always shortly petiolate, opposite for a few nodes then alternate, narrowly lanceolate to linear, 4–10 cm long, 0.3–0.8 cm wide, base tapering to the petiole, green to yellowy green. Adult leaves alternate, petioles 0.4–1.5 cm long; blade narrowly lanceolate to linear, 6.5–12 cm long, 0.5–1.5 cm wide, flat, concolorous, dull green, base tapering to the petiole, margin entire, apex acute, side-veins penniveined, reticulation very dense, intramarginal vein absent, oil glands obscure or absent. Inflorescence terminal compound, peduncles 0.5–1.3 cm long, buds 7 per umbel, pedicels 0.2–0.7 cm long. Mature buds obovoid to pyriform, 0.6–0.8 cm long, 0.4–0.5 cm wide, surface smooth and glossy (not scurfy), scar absent (both opercula shed together at flowering), operculum rounded to patelliform, stamens inflexed, anthers oblong, versatile, dorsifixed, dehiscing by longitudinal slits, style long and straight, stigma papillate (mop-like), locules commonly 3–4(5), ovules not in regular rows. Flowers white. Fruit pedicellate (pedicels 0.2–0.7 cm long), truncate-globose to slightly urceolate, 1.2–1.9 cm long, 1–1.7 cm wide, neck absent or scarcely developed, disc vertically descending, valves 3–4(5), deeply enclosed. Seeds brown, 6–14 mm long, ellipsoidal with terminal wing, hilum ventral. Cultivated seedlings (measured at node 10): cotyledons reniform; stems round in cross-section, smooth to slightly scabrid, leaves subsessile to very shortly petiolate, opposite to sub-opposite, lower leaves ovate to shortly lanceolate becoming narrowly lanceolate by node 6, 4–8 (10.3) cm long, 0.5–1.5 (1.8) cm wide, dull grey to grey-green, base of lower leaves truncate to rounded but soon tapering to the petiole as leaves narrow.
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Tree or mallee to 7 m. Bark tessellated, red-brown and grey-brown on trunk, smooth and white above. Juvenile leaves lanceolate, grey-green. Adult leaves lanceolate to narrowly lanceolate, apiculate; lamina 5–12 cm long, 1–1.5 cm wide, grey-green, concolorous; lateral veins faint, at 50°–65°; intramarginal vein almost confluent with or up to 1 mm from margin; petiole terete, 8–20 mm long. Umbels 7-flowered; peduncle terete. Mature buds not seen. Fruits ovoid or subglobular to urceolate, 14–20 mm long, 13–17 mm wide. Seeds not seen.
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