Eucalyptus botryoides Sm.

Southern mahogany (en), Eucalyptus mahogany (fr)

Species

Angiosperms > Myrtales > Myrtaceae > Eucalyptus l'hér.

Characteristics

Trees, 16-18 m tall. Bark on trunk and larger branches brown to grayish brown, fibrous or flaky fibrous, persistent; bark on smaller branches white or grayish white, smooth, exfoliating. Branchlets ridged. Young leaves opposite, petiolate; leaf blade ovate, apex rounded. Mature leaves with a ca. 1.5 cm petiole; leaf blade ovate to long ovate, 8-12 × 4-6 cm, thinly leathery, secondary veins 3-6 mm apart and at an angle of ca. 60° from midvein, intramarginal veins ca. 1 mm from margin, base rounded, apex sharp. Inflorescences axillary, simple, umbels 6-10-flowered; peduncle 6-10 mm, compressed. Flower buds long obovate, ca. 7 mm. Hypanthium narrowly obconic, ca. 5 mm, 2-ridged; stipe usually absent but sometimes to 3 mm; calyptra obtusely pyramidal, 2-2.5 mm, apex obtuse. Stamens 4-5 mm; anthers long elliptic, dehiscing longitudinally. Capsule campanulate to obconic, 6-8 × 5-6 mm; disk moderately broad; valves 4 or 5, equaling hypanthium rim or included. Fl. Aug-Oct.
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Large tree; bark thick, soft, persistent sometimes to the branches or otherwise to c. 1/2 the trunk. Juvenile lvs opposite for 5-6 pairs, petiolate, ± lanceolate-ovate. Adult lvs with petioles 2-3 cm long; lamina 8-18 × 1.5-4 cm, lanceolate or broad-lanceolate, coriaceous, with conspicuous marginal vein and many fine parallel lateral veins diverging at 50-70° from midrib, discolorous with lower surface paler; base somewhat asymmetric; apex long-attenuate. Umbels axillary, of 7-11 sessile fls (central fl. sometimes pedicellate); peduncles 1-1.5 cm long, strongly flattened. Buds to c. 1 cm long, green; hypanthium c. 1/2 operculum, acutely ribbed; operculum ± conic. Stamens white; anthers oblong. Fr. 7-10 × 5-8 mm, ± oblong-cylindric or urceolate; valves 4, deeply sunken; disc narrow or very narrow, convex or descending.
Tree to 40 m. Bark fibrous or flaky-fibrous, brown to grey-brown, on trunk and larger branches, then smooth, white or grey-white on smaller branches. Juvenile leaves ovate. Adult leaves broadly lanceolate; lamina 10–16 cm long, 2.5–4 cm wide; lateral veins usually visible, at 40°–60°; intramarginal vein up to 2 mm from margin; petiole 20–30 mm long. Umbels 7–11-flowered; peduncle broadly flattened, 7–15 mm long; pedicels usually absent, sometimes up to 3 mm long. Buds subcylindrical, clavate or ovoid; operculum conical or hemispherical, 3–5 mm long, 4–5 mm wide; hypanthium cylindrical or obconical, often ribbed, 4–6 mm long, 4–5 mm wide. Fruits cylindrical, 7–12 mm long, 5–9 mm wide; disc moderately broad, descending; valves 3 or 4, level or included.
Tree to 40 m with fibrous or flaky-fibrous bark on trunk and main branches but smooth on smaller branches.. Juvenile leaves ovate; adult discolorous, broadly lanceolate, 10–16 cm long, 2.5–4 cm wide; petiole 2–3 cm long.. Umbels 7–11-flowered; [very young inflorescences enclosed in bracts looking like one flower]; peduncle broadly flattened, 0.7–1.5 cm long; pedicels usually absent, less often up to 3 mm long.. Buds subcylindrical, clavate or ovoid; operculum conical or hemispherical, 3–5 mm long, 4–5 mm wide.. Calyx-tube cylindrical or obconical, 4–6 mm long, 4–5 mm wide, often ribbed.. Fruits cylindrical, 7–12 mm long, 5–9 mm wide with moderately broad descending disc and 3–4 flush or included valves.. Fig. 5/5.
Medium-sized or large tree. Bark subfibrous and persistent on trunk and main branches. Leaves up to 12 x 4 cm lanceolate, filiform-acuminate, green on both surfaces. Umbels axillary and also borne laterally on the internodes, 6-10-flowered; peduncles 1-1.5 x 0.25 cm, compressed; buds c. 1.2 x 0.4 cm, subsessile, ± fusiform, conspicuously glandular; operculum conoidal, slightly apiculate, J the length of the receptacle-tube. Fruit up to 0.9 x 0.8 cm, barrel-shaped, sessile; valves distinctly included.
Umbels axillary and also borne laterally on the internodes, 6–10-flowered; peduncles 1–1·5 x 0·25 cm., compressed; buds c. 1·2 x 0·4 cm., subsessile, ± fusiform, conspicuously glandular; operculum conoidal, slightly apiculate, 4 the length of the receptacle-tube.
Leaves up to 12 x 4 cm., lanceolate, filiform-acuminate, green on both surfaces.
Fruit up to 0·9 x 0·8 cm., barrel-shaped, sessile; valves distinctly included.
Bark subfibrous and persistent on trunk and main branches.
Medium-sized or large tree.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 30.0 - 40.0
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

Sheltered lowland valleys with fertile soils, and also as a smaller tree on exposed coastal hills; at elevations up to 300 metres..
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Grows on coastal sandy flats, in open forest.
Light 7-9
Soil humidity 1-5
Soil texture 3-6
Soil acidity 2-6
Soil nutriment -
Hardiness (USDA) 10-11

Usage

Uses afforestation environmental use essential oil invertebrate food material medicinal 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°) 1
Optimum temperature (C°) 22 - 29
Size -
Vigor -
Productivity -

Images

Flower

Eucalyptus botryoides flower picture by Elaine F (cc-by-sa)

Fruit

Eucalyptus botryoides fruit picture by Elaine F (cc-by-sa)

Distribution

Eucalyptus botryoides world distribution map, present in Australia, Brazil, China, Honduras, India, Italy, Sri Lanka, New Zealand, Pakistan, Peru, Puerto Rico, Taiwan, Province of China, United States of America, Viet Nam, and South Africa

Conservation status

Eucalyptus botryoides threat status: Near Threatened

Identifiers

LSID urn:lsid:ipni.org:names:592741-1
WFO ID wfo-0000954529
COL ID 3BPPD
BDTFX ID 119948
INPN ID 445823
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Eucalyptus botryoides Eucalyptus platypodos Eucalyptus botryoides var. platycarpa Eucalyptus saligna var. botryoides Eucalyptus saligna subsp. botryoides