Acacia kempeana F.Muell.

Species

Angiosperms > Fabales > Fabaceae > Acacia

Characteristics

Shrub or tree to 5 m high, spreading. Bark furrowed, usually grey or brown. Branchlets terete except at apices, grey or brownish, slightly scurfy, glabrous. Phyllodes narrowly elliptic to very narrowly elliptic, sometimes ±oblanceolate to narrowly oblanceolate, flat, straight or very slightly curved, 3–7.5 (–9) cm long, 4–15 (–25) mm wide, with obtuse and often mucronulate apices, coriaceous, grey-or blue-green, glabrous, resinous when young, very finely multistriate, non-anastomosing, sometimes with 1–3 veins slightly more prominent; gland ±basal. Peduncles 5–12 mm long, glabrous. Spikes 1 or 2 per upper axil, 1–2.5 cm long, dense, bright golden. Flowers 5-merous; calyx cupular, dissected to ⅓ of length, hairy mostly at base; corolla 1.3–2 mm long, 2–2.5 times as long as calyx. Pods oblong to narrowly oblong, flat, 2–7 cm long, 1–1.6 (–2) cm wide, chartaceous, finely transversely reticulate, glabrous, often slightly resinous. Seeds transverse to slightly oblique.
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An evergreen spreading shrub. It grows to 3-4 m high and 2-3 m across. The stem is smooth, slender and bends easily. It is upright and with many branches. The bark is grey and becomes rough. The leaves (phyllodes) are stiff and broad. They are grey green. They are 5-10 cm long and 0.5-1.5 cm across. They have a blunt end and are slightly curved. There are 3 clear veins running along the leaf. The young growth is sticky. The flowers are golden rods. They are 2-4 cm long. They occur singly. The pods are 3-6 cm long and 1-1.5 cm across. They are flat, brown and sticky. There are 7-11 seeds per pod and they are 3-4 mm long. They are dark brown when ripe.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 3.5 - 3.75
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 widespread in central Australia. It requires well drained soil. It can grow in part or full sunlight. It can withstand some drought and frost and grows in semi arid areas. It is often in limestone areas. Hot fires can kill it but it can re-shoot after cool fires in winter. It can grow in arid places.
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Widely distributed in arid areas, where it occurs usually on stony hillsides or in coarse textured alluvial soils; often abundant in mulga woodlands on red sandy loam plains. Often found along seasonal watercourses.
Widely distributed in arid areas, where it occurs usually on stony hillsides or in coarse textured alluvial soils; often abundant in mulga woodlands on red sandy loam plains. Often found along seasonal watercourses.
Widely distributed in arid areas, where it occurs usually on stony hillsides or in coarse textured alluvial soils; often abundant in mulga woodlands on red sandy loam plains.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

The seed are eaten. The tree harbours a large tasty grub which is eaten. Grubs can be 11.5 g weight. The grubs can be eaten raw or lightly roasted. They are good protein. The Red Lerp scale produces a honey dew which is eaten. It also has edible gum.
Uses animal food bee plant environmental use food fuel gum invertebrate food medicinal
Edible gums leaves pods seeds
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

It is grown from seed. The seed needs 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 -

Images

Acacia kempeana unspecified picture

Distribution

Acacia kempeana world distribution map, present in Australia

Conservation status

Acacia kempeana threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:470650-1
WFO ID wfo-0000202890
COL ID 8PGJ
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Acacia kempeana Racosperma kempeanum