Eucalyptus regnans F.Muell.

Tasmanian oak (en), Eucalyptus royal (fr)

Species

Angiosperms > Myrtales > Myrtaceae > Eucalyptus l'hér.

Characteristics

Large tree; bark fibrous, forming a stocking extending to c. 1/2 way up trunk or rarely further; upper trunk and branches smooth, whitish, with bark peeling in long strips. Juvenile lvs similar to adult but opposite for 2-3 pairs, ± ovate-falcate and conspicuously asymmetric. Adult lvs with petiole 7-20 mm long; lamina 7-20 × 2-6 cm, lanceolate, falcate, bright green, coriaceous, with lateral veins diverging from midrib at 30-40°; base ± oblique; apex acuminate. Umbels in axillary pairs, each of 7 or more fls; peduncles often angular and somewhat flattened, to c. 1.5 cm long; pedicels very short. Buds to c. 10 mm long, conic to clavate, green, acute; operculum slightly < hypanthium, hemispheric, acute. Stamens white; anthers reniform. Fr. pedicellate, 6-8 × 5-7 mm, obconic or turbinate, valves 3, ± included; disc flat, level with rim of capsule or slightly sunken.
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Tree to 75(–100) m with rough fibrous bark to about halfway up the trunk, then with white or grey-green smooth bark above.. Juvenile leaves ovate to broadly lanceolate, oblique; adult lanceolate, 9–14 cm long, 1.6–2.7 cm wide with nervation very oblique; petiole channelled, 1.2–2.2 cm long.. Umbels paired in leaf axils, 9–15-flowered; peduncle angular, 0.5–1.3 cm long; pedicels 2–4[5] mm long.. Buds clavate; operculum conical, 2–3 mm long, 3–4 mm wide.. Calyx-tube obconical, ± 3 mm long, 3–4 mm wide.. Fruits obconical to pyriform, 5–9 mm long, 4–7 mm wide, with broad level or slightly descending disc and 3 flush or slightly exserted valves.. Fig. 9/33, p. 45.
Tree usually to 75 m, recorded to 100 m. Bark rough up to 15 m on trunk, smooth, white or grey-green above, often shedding in strips. Adult leaves lanceolate or broadly lanceolate; lamina 9–14 cm long, 1.6–2.7 cm wide; petiole channelled, 12–22 mm long. Peduncle angular, 5–13 mm long; pedicels 2–4 mm long. Operculum conical, 2–3 mm long, 3–4 mm wide; hypanthium obconical, c. 3 mm long, 3–4 mm wide. Fruits 5–9 mm long, 4–7 mm wide.
Tree usually to 75 m, recorded to 100 m. Bark rough up to 15 m on trunk, smooth, white or grey-green above, often shedding in strips. Adult leaves lanceolate or broadly lanceolate; lamina 9-14 cm long, 1.6-2.7 cm wide; petiole channelled, 12-22 mm long. Peduncle angular, 5-13 mm long; pedicels 2-4 mm long. Operculum conical, 2-3 mm long, 3-4 mm wide; hypanthium obconical, c. 3 mm long, 3-4 mm wide. Fruits 5-9 mm long, 4-7 mm wide.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 75.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Sheltered aspects in mountains and valleys, especially in deep rich soils, experiencing snow in parts of its range; at elevations up to 900 metres. Often forms pure stands.
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Grows in tall open forest, often inpure stands.
Light 7-9
Soil humidity 1-7
Soil texture 2-6
Soil acidity 3-8
Soil nutriment -
Hardiness (USDA) 9-10

Usage

Uses environmental use fuel material medicinal timber wood
Edible -
Therapeutic use Anti-bacterial agents (leaf)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -7
Optimum temperature (C°) 12 - 25
Size -
Vigor -
Productivity -

Images

Eucalyptus regnans unspecified picture

Distribution

Eucalyptus regnans world distribution map, present in Australia, Brazil, China, New Zealand, Taiwan, Province of China, and South Africa

Conservation status

Eucalyptus regnans threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:593303-1
WFO ID wfo-0000955775
COL ID 3BQF9
BDTFX ID 101381
INPN ID 611721
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Eucalyptus regnans Eucalyptus regnans var. fastigata