Eucalyptus johnstonii Maiden

Johnston's gum (en), Eucalyptus de Johnston (fr)

Species

Angiosperms > Myrtales > Myrtaceae > Eucalyptus l'hér.

Characteristics

Tree to 40 m. Bark smooth throughout, orange-red or yellow-green to grey or yellow-bronze. Juvenile leaves opposite, elliptic, sessile, becoming alternate, petiolate, orbicular, shining, dark green, slightly discolorous or concolorous. Adult leaves alternate, lanceolate to broadly lanceolate, subcrenulate, acuminate; lamina 8–12 cm long, 2–3 cm wide, shining, dark green, concolorous; lateral veins at 25°–30°; intramarginal vein up to 4 mm from margin; petiole terete, 15–30 mm long. Umbels 3-flowered; peduncle flattened or angular, 3–9 mm long; pedicels absent or to 2 mm long. Buds ovoid, slightly wrinkled; operculum low-hemispherical, shortly umbonate, 4–6 mm long, 6–9 mm wide; hypanthium obconical, angular or 2-ribbed, 5–6 mm long, 6–9 mm wide. Fruits obconical to hemispherical, wrinkled, 2-or 3-ribbed, 7–8 mm long, 9–13 mm wide; disc broad, level or slightly ascending; valves 3 or 4, exserted.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 55.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Usually found on badly drained sandstone; at elevationss from 600-2,600 metres. Montane forests on sites subject to some waterlogging on peaty, sandy soils.
More
Grows on mountains andplateaus in mountain podsolic soils, in tall forest and tall open forest.
Light 7-9
Soil humidity 1-7
Soil texture 2-6
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 8-9

Usage

Uses essential oil material timber wood
Edible -
Therapeutic use -
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°) -12
Optimum temperature (C°) 12 - 18
Size -
Vigor -
Productivity -

Images

Eucalyptus johnstonii unspecified picture

Distribution

Eucalyptus johnstonii world distribution map, present in Australia

Conservation status

Eucalyptus johnstonii threat status: Near Threatened

Identifiers

LSID urn:lsid:ipni.org:names:593027-1
WFO ID wfo-0000955159
COL ID 3BQ3W
BDTFX ID 101374
INPN ID 611713
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Eucalyptus johnstonii Eucalyptus muelleri