Corymbia polysciada (F.Muell.) K.D.Hill & L.A.S.Johnson

Species

Angiosperms > Myrtales > Myrtaceae > Corymbia

Characteristics

Tree to 15 m tall. Forming a lignotuber. Deciduous in mid dry season.Bark a rough stocking extending over part of or, less commonly, all of the trunk, with a clear demarcation at change to smooth bark. Rough bark dark grey, tessellated, smooth bark creamy white to pale grey shedding in thin scales, the surface sometimes powdery.Branchlets lack oil glands in the pith; smooth.Juvenile growth (coppice or field seedlings to 50 cm): stems rounded in cross-section, sparsely scabrid to virtually smooth; leaves opposite or a few pairs sub-opposite, petiolate, lowest leaves sub-orbicular, soon becoming cordate to ovate-elliptic then tending to lanceolate at upper nodes, 5.5–24 cm long, 3.5–14 cm wide, ± undulate, the base lobed to rounded, apex rounded to pointed, slightly blue-green to green, at best sparsely setose with the bristle-glands confined mainly to the petiole and midrib with few on the lamina.Crown leaves opposite toalternate, petiolate, petioles 0.7–3.3 cm long; blade ovate to elliptic to broadly lanceolate, 6–21(25.5) cm long, 1–7.5(11.5) cm wide, undulate, base tapering to petiole, apex pointed, margin entire, concolorous, glossy or dull, green, smooth, side-veins at more than 45° to midrib, reticulation dense to very dense, intramarginal vein present, oil glands obscure. New growth flushed with pink-purple, rapidly turning green.Inflorescence axillary compound, condensed, the rhachis with a short stout basal internode 0.1–0.5 cm long, and a second internode 0.3–1 cm long or sometimes absent, peduncles variable, ca 0.2–4 cm long, buds 7 per umbel, pedicels (0.8)1.2–3.2 cm long. Mature buds pyriform, 0.6–0.8 cm long, 0.4–0.7 cm wide, surface smooth and glossy, scar present (outer operculum shed during bud development), operculum rounded to flattened, stamens inflexed, all fertile, anthers oblong, dorsifixed, versatile, dehiscing by longitudinal slits, style long and straight, stigma ± tapering, locules 3, the placentae each with ovules arranged in 3 or 5 vertical rows. Flowers creamy white.Fruit pedicellate (pedicels 0.8–3.1 cm long), cupular to cylindrical or barrel-shaped, 0.9–1.5 cm long, 0.8–1.1 cm wide, thin-walled, smooth, disc descending vertically, valves 3, enclosed.Seeds brown, 4–6.5 mm long, flattened to saucer-shaped, dorsal surface smooth, hilum ventral. Cultivated seedlings (measured at ca node 10): cotyledons orbicular; stems rounded in cross-section, densely setose with long bristle-glands; leaves always shortly petiolate (petioles to 0.3 cm long), opposite for at least 13 pairs, ± orbicular to ovate-lanceolate, 4.5–12 cm long, 2.3–5.5 cm wide, base rounded or tapering to petiole, apex rounded or pointed, green, discolorous, setose but only sparsely so above and below by node 13.
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Growth form tree
Growth support free-standing
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Sexuality hermaphrodite
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Mature height (meter) 15.0
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Cultivation

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Distribution

Corymbia polysciada world distribution map, present in Australia

Conservation status

Corymbia polysciada threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:986347-1
WFO ID wfo-0000925573
COL ID YQB7
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Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Corymbia polysciada Eucalyptus polysciada