Tree to 10 m tall, but usually smaller and mallee-like. Forming a lignotuber.Bark rough and evenly tessellated, pale grey-brown to red-brown to orange-brown, in trees usually persisting on the small branches; however, when a dwarf mallee the bark may be entirely smooth.Branchlets lacking oil glands in the pith.Juvenile growth (coppice or field seedlings to 50 cm): stems round in cross-section, leaves opposite to sub-opposite, shortly petiolate, linear to narrowly lanceolate, dull grey-green to green.Adult leaves alternate, petioles 0.6–2 cm long; blade narrowly lanceolate to lanceolate, (6)7.5–12(15)cm long, (0.8)1–2.1 cm wide, flat, concolorous, dull to slightly glossy, green, base tapering to the petiole, margin entire, apex acuminate to acute, side-veins penniveined, reticulation very dense, intramarginal vein absent, oil glands obscure or absent.Inflorescence terminal compound, peduncles 0.8–1.4 cm long, buds 7 per umbel, pedicels 0.3–0.8 cm long. Mature buds obovoid to ovoid to rarely pyriform, 0.6–0.8 cm long, 0.4–0.5 cm wide, red, surface smooth and glossy, scar absent (both opercula shed together at flowering), operculum rounded to conical, stamens inflexed, anthers oblong, versatile, dorsifixed, dehiscing by longitudinal slits, style long and straight, stigma papillate (mop-like), locules commonly 4 (occasionally 3 or 5), ovules not in regular rows. Flowers white.Fruit pedicellate (pedicels 0.2–0.7 cm long), usually urceolate with a well developed narrowed neck at the apex, 1.1–2.2 cm long, 0.9–1.8(2) cm wide, disc vertically descending, valves 3–4(5), deeply enclosed.Seeds brown, ellipsoidal with terminal wing, 7–12 mm long (including wing), dorsal surface smooth.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 subopposite, lower leaves ovate to shortly lanceolate and slightly scabrid becoming lanceolate and glabrous by node 6, 4.8–12 cm long, 0.9–2 cm wide, dull grey-green, base of lower leaves truncate to rounded but soon tapering to the petiole as leaves narrow, apex acute to apiculate.
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Mallee to 5 m. Bark tessellated, grey-brown on all but smallest branchlets. Juvenile leaves not seen. Adult leaves alternate, narrowly lanceolate, acuminate, moderately thick; lamina 5–9 cm long, 0.6–1.5 cm wide, yellow-green, slightly discolorous or concolorous; lateral veins faint, at 45°–60°; intramarginal vein confluent with margin; petiole channelled, 8–15 mm long. Umbels 7-flowered; peduncle terete, 5–7 mm long; pedicels 3–4 mm long. Buds globular to obpyriform; operculum depressed hemispherical, shortly umbonate, 2–3 mm long, 5–7 mm wide; hypanthium truncate-ovoid, 6–8 mm long, 7–8 mm wide. Fruits globular, ovoid or urceolate, 10–16 mm long, 7–15 mm wide. Seeds winged, yellow-brown.
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