Acacia umbellata A.Cunn. ex Benth.

Species

Angiosperms > Fabales > Fabaceae > Acacia

Characteristics

Shrub to 3 m high, multistemmed, ±semiprostrate, or rarely tree 3–6 m (N.T.), resinous. Bark stringy, brown or blackish grey. Branchlets terete, grey-brown to dark red-brown, ± glabrous or scurfy. Young shoots compressed or angular. Phyllodes erect or upcurved, oblique, narrowly lanceolate to lanceolate or narrowly elliptic to broadly elliptic, 5.6–14.5 cm long, 11–43 mm wide, obtuse, glabrous, with 1–3 prominent and 3 or 4 subprominent veins often confluent with lower margin near base; minor veins 8–10 per mm, longitudinal, non-anastomosing; marginal nerve slightly thickened, similar to main nerves; gland 1, small, basal. Spikes 0.7–2 (–3.4) cm long, golden. Flowers 5 (or 6)-merous; calyx 0.7–1.3 mm long, sinuate or dissected to 1/3–1/4, pubescent to subglabrous, with margins fimbriolate; corolla 1.2–2 mm long, dissected to ± 1/2, glabrous; ovary papillose. Pods in erect clusters, linear, ± straight-sided, subterete, mostly 1.7–6.2 cm long, 2.5–4 (–5) mm wide, thinly crustaceous, longitudinally furrowed. Seeds longitudinal, elliptic-oblong, 3.5–5 mm long, black.
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A medium sized shrub with a bushy growth habit. It grows 3-4 m tall and 1-3 m across. The young branches are silky hairy. They are reddish. The bark is rough, grey and fibrous. The leaves (phyllodes) are 3-13 cm long by 1.5-3 cm wide. They are oblong with a blunt tip and shiny green. They are straight and very thick and have veins which run along the length. The flower heads are like yellow rods and 2.5-3 cm long. They can occur either singly or in clusters. There are many flowers. The flower stalks are 0.3-0.5 cm long. The pods are 5 cm long and round in cross section and woody. They can be curved or straight. Pods are pale brown when ripe. The seeds are black and attached lengthwise along the pod.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 3.0 - 3.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer rhizobia
Photosynthetic pathway c3

Environment

It is a tropical plant. It grows in northern Australia in open forest. It must have good drainage. It often occurs on poorer gravely loams and sandstone country.
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Grows in dry stony or sandy soil, on creek banks, often in eucalypt woodland on rocky slopes and ridges, on sandstone, quartzite, granite, schist or siltstones.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

The seeds are eaten. The hard black seeds are crushed into flour and water added before cooking as flat cakes.
Uses -
Edible seeds
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

It is grown from seed. The seed need treatment to break the hard seed coat. Normally this is by putting the seeds in very hot water and letting the water cool down overnight then planting the seeds immediately.
Mode seedlings
Germination duration (days) 21
Germination temperacture (C°) 21 - 26
Germination luminosity -
Germination treatment soaking
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Acacia umbellata world distribution map, present in Australia

Identifiers

LSID urn:lsid:ipni.org:names:471707-1
WFO ID wfo-0000202830
COL ID 8Q86
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Acacia umbellata Racosperma umbellatum