Acacia aulacocarpa A.Cunn. ex Benth.

Species

Angiosperms > Fabales > Fabaceae > Acacia

Characteristics

Slender tree 15-35(-39) m high, bole 12-21 m, d.b.h. 25-90 cm. Branchlets angular, rarely glutinous. Phyllodes straight or falcate, acute or subacute, 7-15 by 0.6-3.5 cm, 4-12 times as long as wide, gradually narrowing into the pulvinus, glaucous green, major veins and margins most often not yellowish; pulvinus 4-7 mm, with a basal gland, elliptic in outline, swollen, with a narrow orifice, c. 1.5 mm in diameter; prominent longitudinal veins 3-7, somewhat crowded towards the basiscopic margin, with numerous ± parallel secondary veins which do not anastomose. Spikes dense or moderately dense, 2-5.5 by c. 0.4 cm, on scurfy peduncles 2-8 mm, solitary or 2 or 3 together at the base of rudimentary axillary shoots in the axils of the upper phyllodes. Flowers (pale) yellow or light greenish cream, pentamerous, bisexual. Calyx broadly cupular, 0.5-1 mm, membranous, glabrous; lobes 0.2-0.3 mm. Corolla 1.2-1.9 mm, lobes 0.6-0.9 mm. Stamens 2.5-3 mm. Ovary 0.5 mm, scurfy or puberulous. Pod light brown with dark brown veins, with a whitish bloom when young, oblong, straight, often twisted when old, up to 8 by c. (l-)2 cm; valves coriaceous or subwoody, glabrous, with transverse, slightly oblique, anastomosing veins. Seeds transverse, in separate compartments, elliptic-oblong, c. 5-5.5 by 2.5 mm; areole open; funicle folded about five times beneath the seed.
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Shrub or tree 2–8 (–15) m high; canopy blue-green. Bark smooth, or shallowly rimose on largest trees. Branchlets acutely angled for 10–25 cm (occasionally more) below apex, orange or green, glabrous. Phyllodes dimidiate (sometimes recurved at apex) to subfalcate, (3–) 5–12.5 cm long, 7–35 mm wide, thinly coriaceous, glaucous to subglaucous, glabrous; longitudinal veins numerous, 3 or 4 (–5) per mm, parallel and not anastomosing, with 3 main veins slightly raised (when dry), broader and more prominent than the rest, 3 or 4 less prominent secondary veins also present, with minor veins not raised; main nerves commonly confluent with lower margin for a short distance above pulvinus; pulvinus 4–8 (–10) mm long. Inflorescences simple, 1 or 2 (–4) per axil; peduncles (3–) 4–8 (–10) mm long; spikes 2–5 (–6) cm long, bright golden. Flowers 5‑merous; calyx gamosepalous, c. 0.5 mm long, shallowly dissected, ±glabrous; ovary glabrous. Pods narrowly oblong, sometimes twisted, straight to shallowly curved, 1.5–8 cm long, usually 0.8–1.5 cm wide, woody, resinous, glabrous, reddish brown, dehiscing along dorsal suture, strongly obliquely to ±longitudinally reticulately veined. Seeds oblique, ovate to oblong or elliptic, 3.5–5 mm long, brown to black; aril greyish cream.
A wattle. It is a shrub or low tree. It grows 2-8 m tall. The leaves are 6-7 cm long by 1-1.5 cm wide. They are covered with a white wax. They flowers are yellow and have a strong perfume. They are in spikes 15-20 mm long. The pods are 5 cm long by 1 cm wide. The seeds are 5 mm long by 2 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) 15.0 - 20.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer rhizobia
Photosynthetic pathway c3

Environment

Found in a range of habitats, mainly open forest, it is one of the few acacia species found in rainforest. Grows on undulating highlands, ridges, steep rocky slopes, as well as flat and gently undulating terrain of coastal plains and foothills.
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Grows in clay or loam along watercourses or in sandy soil on rocky outcrops (slopes, escarpment) in open forest and shrubland.
It is a tropical plant.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

Uses Wood reputed for its durability; used for building posts.
Uses animal food bee plant charcoal environmental use fiber fuel invertebrate food material medicinal ornamental timber wood
Edible seeds
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

It can be grown from treated seeds.
Mode cuttings seedlings
Germination duration (days) 21
Germination temperacture (C°) 21 - 26
Germination luminosity -
Germination treatment soaking
Minimum temperature (C°) -
Optimum temperature (C°) 18 - 32
Size -
Vigor -
Productivity -

Images

Acacia aulacocarpa unspecified picture

Distribution

Acacia aulacocarpa world distribution map, present in Australia, Philippines, and Papua New Guinea

Conservation status

Acacia aulacocarpa threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:469779-1
WFO ID wfo-0000202547
COL ID 64C7X
BDTFX ID -
INPN ID 844639
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Acacia aulacocarpa Racosperma aulacocarpum Acacia leucodendron Racosperma aulacocarpum var. fruticosum Acacia aulacocarpa var. fruticosa