Eucalyptus gunnii Hook.F.

Cider gum (en), Gommier à cidre (fr), Eucalyptus de Gunn (fr)

Species

Angiosperms > Myrtales > Myrtaceae > Eucalyptus l'hér.

Characteristics

Tree to 25 m. Bark smooth throughout, white, grey or grey-green, or sometimes c. 1 m of persistent or undecorticated, flaky bark at trunk base. Juvenile leaves opposite, sessile, ovate to orbicular, amplexicaul, crenulate, emarginate, grey-green, slightly discolorous. Adult leaves alternate, elliptic or ovate to broadly lanceolate, acuminate or apiculate; lamina 5–8 cm long, 1.2–3 cm wide, grey-green, concolorous; lateral veins faint, at 30°–45°; intramarginal vein up to 1 mm from margin; petiole terete, 11–20 mm long. Umbels 3-flowered; peduncle slightly angular, 5–9 mm long; pedicels absent or 1–2 mm long. Buds clavate to subcylindrical, usually glaucous; operculum hemispherical, slightly umbonate, 2–3 mm long, 3–5 mm wide; hypanthium obconical, 4-5 mm long, 3–5 mm wide. Fruits cylindrical or suburceolate, usually glaucous, 6–9 mm long, 4–7 mm wide; disc broad, level or slightly descending; valves 3 or 4, included.
More
Tree to c. 10 m high; bark rough and sometimes persistent at base, otherwise trunk smooth and grey. Juvenile lvs opposite for many pairs, sessile, very glaucous, suborbicular to broad-ovate; base cordate; apex obtuse or acute. Adult lvs with petioles 1-2.5 cm long; lamina 4-10 × 1-2.5 cm, oblong-lanceolate or oblong-elliptic, subcoriaceous, green or ± glaucous, concolorous; lateral veins diverging at c. 45° to midrib; base symmetric; apex usually acute or mucronate. Fls axillary, in clusters of 3; peduncles 5-10 mm long, flattened; pedicels short. Buds 7-8 mm long, ± clavate, glaucous; operculum hemispheric, much < hypanthium. Stamens white; anthers oblong. Fr. shortly pedicellate, 5-9 × c. 6 mm, cylindric-urceolate, with truncate apex, glaucous; valves 4, deeply sunken; disc narrow, descending.
A tree which grows to 18-25 m high. It spreads to 6-12 m across. It keeps its leaves year round. The bark is thin and smooth and reddish. It peels off in flakes. The young leaves occur in pairs and almost circle the stem. The young leaves are rounded and blue and these are replaced by sickle shaped grey-green leaves. The leaves are 7.5-10 cm long. The bark becomes green-white and this is shed to reveal new grey-green bark. The flowers are cream-white and occur in clusters or three. They have a hinged lid which opens to allow insect pollination. The fruit are small and urn shaped.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination
Spread barochory
Mature width (meter) 5.25 - 7.0
Mature height (meter) 18.0 - 25.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is native to Tasmania in Australia. It grows in temperate regions but can grow in the subtropics. It needs well drained soils but can grow in wet soils. It can grow in full sun or light shade. It can stand heavy frosts. It grows near the edge of the tree line at high altitudes on dolerite mountains in Tasmania. It does not suit chalk soils. It suits hardiness zones 7-9. Tasmania Herbarium. Arboretum Tasmania.
More
Grows on poorly drained flats, valleys and plateaus, in alpine humus soil amongrocks, in woodlands and open woodland.
Alpine areas on rocky well-drained soils, sometimes also found on marshy soils.
Light 7-9
Soil humidity 1-8
Soil texture 2-6
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 8-9

Usage

A cool refreshing liquid from wounds in the bark in spring is used as a drink. It is a substitute for maple syrup. The tree also produces an edible manna.
Uses animal food environmental use essential oil food material medicinal oil wood
Edible barks saps stems
Therapeutic use Anti-bacterial agents (leaf), Antifungal agents (leaf)
Human toxicity -
Animal toxicity -

Cultivation

Plants are grown from seed. Trees can be cut back and regrow. Trees should be 3-4 m apart.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -12
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Eucalyptus gunnii unspecified picture

Distribution

Eucalyptus gunnii world distribution map, present in Australia, Brazil, France, and New Zealand

Conservation status

Eucalyptus gunnii threat status: Endangered

Identifiers

LSID urn:lsid:ipni.org:names:592987-1
WFO ID wfo-0000955055
COL ID 3BPZX
BDTFX ID 25709
INPN ID 97402
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Eucalyptus perriniana Eucalyptus gunnii

Lower taxons

Eucalyptus gunnii subsp. divaricata