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Useful Tropical Plants

Acacia adsurgens

Maiden & Blakeley

Fabaceae


Classification of the genus Acacia (in the wider sense) has been subject to considerable debate. It is generally agreed that there are valid reasons for breaking it up into several distinct genera, but there has been disagreement over the way this should be done. As of 2017, it is widely (but not completely) accepted that the section that includes the majority of the Australian species (including this one) should retain the name Acacia, whilst other sections of the genus should be transferred to the genera Acaciella, Mariosousa, Senegalia and Vachellia[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].

+ Synonyms

Racosperma adsurgens (Maiden & Blakeley) Pedley

Common Name:

No Image.

General Information

Acacia adsurgens is a spreading, multi-stemmed shrub or a small tree that can grow up to 4 metres tall and up to 8 metres across[
286
Title
Flora of Australia
Publication
 
Author
 
Website
http://www.anbg.gov.au/abrs/abif/flora/
Publisher
 
Year
0
ISBN
 
Description
The full information from the Flora of Australia - on-line. An excellent resource.
,
1300
Title
Australian Trees and Shrubs: Species for Land Rehabilitation and Farm Planting in the Tropics
Publication
 
Author
Doran J.C.; Turnbull J.W. (Editors)
Publisher
Australian Centre for International Agricultural Research; Canbe
Year
1997
ISBN
1-86320-127-0
Description
A very informative book, rich in information about the uses, cultivation needs and very much more for over 160 species of Australian trees and shrubs.
]. Young plants are often bushy and rounded but become openly branched, sometimes spindly and with an untidy aspect with age. The stems can be up to 10 - 15cm in diameter[
1298
Title
Wattles of the Pilbara
Publication
 
Author
 
Website
http://worldwidewattle.com/speciesgallery/descriptions/pilbara/html/default.htm
Publisher
 
Year
0
ISBN
 
Description
A website with factsheets for the various Acacia species that grow in the Pilbara region of northwestern Western Australia
]. Although it produces true leaves as a seedling, llike most members of this section of the genus, the mature plant does not have true leaves but has leaf-like flattened stems called phyllodes[
397
Title
Australian Native Plants Society
Publication
 
Author
 
Website
http://anpsa.org.au/index.html
Publisher
 
Year
0
ISBN
 
Description
A series of fact sheets on Australian plants. Good photographs, brief description and information on uses, habitat, range, cultivation etc.
].
The plant is traditionally harvested from the wild for local use as a food and also has medicinal applications. It has potential for wider use as a food source, is a good fuel crop and can be used for soil stabilization.

Known Hazards

The seed of many Acacia species, including this one, is edible and highly nutritious, and can be eaten safely as a fairly major part of the diet. Not all species are edible, however, and some can contain moderate levels of toxins[
1295
Title
Acacia in Australia: Ethnobotany and Potential Food Crop
Publication
Janick (ed.), Progress in new crops pp 228-236, (1996) ASHS Press, Alexandria, VA.
Author
Lister P.R.; Holford P.; Haigh T.; Morrison D.A.
Website
https://hort.purdue.edu/newcrop/proceedings1996/v3-toc.html
Publisher
ASHS Press, Alexandria, VA.
Year
1996
ISBN
0-9615027-3-8
Description
 
]. Especially when harvesting from the wild, especial care should be taken to ensure correct identification of any plants harvested for food[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].
Especially in times of drought, many Acacia species can concentrate high levels of the toxin Hydrogen cyanide in their foliage, making them dangerous for herbivores to eat.

Botanical References

286
Title
Flora of Australia
Publication
 
Author
 
Website
http://www.anbg.gov.au/abrs/abif/flora/
Publisher
 
Year
0
ISBN
 
Description
The full information from the Flora of Australia - on-line. An excellent resource.

Range

Australia - Western Australia, Northern Territories, Queensland

Habitat

Reddish sandy and gravelly soils, on flat plains and hillsides, commonly in spinifex grassland communities, sometimes with eucalypts; at elevations up to 700 metres[
286
Title
Flora of Australia
Publication
 
Author
 
Website
http://www.anbg.gov.au/abrs/abif/flora/
Publisher
 
Year
0
ISBN
 
Description
The full information from the Flora of Australia - on-line. An excellent resource.
,
1300
Title
Australian Trees and Shrubs: Species for Land Rehabilitation and Farm Planting in the Tropics
Publication
 
Author
Doran J.C.; Turnbull J.W. (Editors)
Publisher
Australian Centre for International Agricultural Research; Canbe
Year
1997
ISBN
1-86320-127-0
Description
A very informative book, rich in information about the uses, cultivation needs and very much more for over 160 species of Australian trees and shrubs.
].

Properties

Edibility Rating *  *
Medicinal Rating *  *
Other Uses Rating *  *
HabitTree
Height3.00 m
Growth RateMedium
PollinatorsInsects
Cultivation StatusWild

Cultivation Details

Acacia adsurgens is a plant of the warm to hot, semi-arid and arid zones of northern Australia, where it can be found at elevations up to 700 metres. Summers are hot with the mean maximum temperature of the hottest month 36 - 39°c and the mean temperature of the coldest month 5 - 11°c. There is an average of 1 - 11 frosts per year over much of the range. Mean annual rainfall is in the range 65 - 500 mm[
1300
Title
Australian Trees and Shrubs: Species for Land Rehabilitation and Farm Planting in the Tropics
Publication
 
Author
Doran J.C.; Turnbull J.W. (Editors)
Publisher
Australian Centre for International Agricultural Research; Canbe
Year
1997
ISBN
1-86320-127-0
Description
A very informative book, rich in information about the uses, cultivation needs and very much more for over 160 species of Australian trees and shrubs.
].
Requires a sunny position in a well-drained soil[
1300
Title
Australian Trees and Shrubs: Species for Land Rehabilitation and Farm Planting in the Tropics
Publication
 
Author
Doran J.C.; Turnbull J.W. (Editors)
Publisher
Australian Centre for International Agricultural Research; Canbe
Year
1997
ISBN
1-86320-127-0
Description
A very informative book, rich in information about the uses, cultivation needs and very much more for over 160 species of Australian trees and shrubs.
]. The plant grows in the wild mainly in deep, well-drained, infertile, acidic, red sand and sandy loam soils, though it may also occur in skeletal soil in rocky habitats such as gravelly scree slopes[
1298
Title
Wattles of the Pilbara
Publication
 
Author
 
Website
http://worldwidewattle.com/speciesgallery/descriptions/pilbara/html/default.htm
Publisher
 
Year
0
ISBN
 
Description
A website with factsheets for the various Acacia species that grow in the Pilbara region of northwestern Western Australia
].
Acacia adsurgens appears to be a moderately fast-growing but relatively short-lived species. Plants can grow to 100cm tall and commence flowering within 22 months from seed, producing heavy seed crops in good seasons. However, they usually become senescent when about 8 - 20 years old[
1298
Title
Wattles of the Pilbara
Publication
 
Author
 
Website
http://worldwidewattle.com/speciesgallery/descriptions/pilbara/html/default.htm
Publisher
 
Year
0
ISBN
 
Description
A website with factsheets for the various Acacia species that grow in the Pilbara region of northwestern Western Australia
,
1300
Title
Australian Trees and Shrubs: Species for Land Rehabilitation and Farm Planting in the Tropics
Publication
 
Author
Doran J.C.; Turnbull J.W. (Editors)
Publisher
Australian Centre for International Agricultural Research; Canbe
Year
1997
ISBN
1-86320-127-0
Description
A very informative book, rich in information about the uses, cultivation needs and very much more for over 160 species of Australian trees and shrubs.
].
Plants have a moderate coppicing ability[
1298
Title
Wattles of the Pilbara
Publication
 
Author
 
Website
http://worldwidewattle.com/speciesgallery/descriptions/pilbara/html/default.htm
Publisher
 
Year
0
ISBN
 
Description
A website with factsheets for the various Acacia species that grow in the Pilbara region of northwestern Western Australia
].
The seeds are usually produced in moderate quantities, with heavy crops produced in good seasons[
1298
Title
Wattles of the Pilbara
Publication
 
Author
 
Website
http://worldwidewattle.com/speciesgallery/descriptions/pilbara/html/default.htm
Publisher
 
Year
0
ISBN
 
Description
A website with factsheets for the various Acacia species that grow in the Pilbara region of northwestern Western Australia
].
The seeds of most acacia species can be quickly and efficiently harvested at full maturity without the need for any specialised equipment. Small seed-bearing branches can be cut and beaten on sheets, or bushes can be beaten or shaken directly onto large sheets[
1294
Title
Potential of Australian Acacias in combating hunger in semi-arid lands
Publication
Conservation Science W. Aust. 4 (3):161-169 (2002)
Author
Rinaudo A.; Patel P.; Thomson L.A.J.
Publisher
 
Year
2002
ISBN
 
Description
 
].
This species has a symbiotic relationship with certain soil bacteria; these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[
1300
Title
Australian Trees and Shrubs: Species for Land Rehabilitation and Farm Planting in the Tropics
Publication
 
Author
Doran J.C.; Turnbull J.W. (Editors)
Publisher
Australian Centre for International Agricultural Research; Canbe
Year
1997
ISBN
1-86320-127-0
Description
A very informative book, rich in information about the uses, cultivation needs and very much more for over 160 species of Australian trees and shrubs.
].

Edible Uses

Seed - cooked[
1295
Title
Acacia in Australia: Ethnobotany and Potential Food Crop
Publication
Janick (ed.), Progress in new crops pp 228-236, (1996) ASHS Press, Alexandria, VA.
Author
Lister P.R.; Holford P.; Haigh T.; Morrison D.A.
Website
https://hort.purdue.edu/newcrop/proceedings1996/v3-toc.html
Publisher
ASHS Press, Alexandria, VA.
Year
1996
ISBN
0-9615027-3-8
Description
 
,
1300
Title
Australian Trees and Shrubs: Species for Land Rehabilitation and Farm Planting in the Tropics
Publication
 
Author
Doran J.C.; Turnbull J.W. (Editors)
Publisher
Australian Centre for International Agricultural Research; Canbe
Year
1997
ISBN
1-86320-127-0
Description
A very informative book, rich in information about the uses, cultivation needs and very much more for over 160 species of Australian trees and shrubs.
]. It can be eaten in the same ways as other small legume seeds and is also ground into a powder then used as a flavouring in desserts or as a nutritious supplement to pastries and breads[
1295
Title
Acacia in Australia: Ethnobotany and Potential Food Crop
Publication
Janick (ed.), Progress in new crops pp 228-236, (1996) ASHS Press, Alexandria, VA.
Author
Lister P.R.; Holford P.; Haigh T.; Morrison D.A.
Website
https://hort.purdue.edu/newcrop/proceedings1996/v3-toc.html
Publisher
ASHS Press, Alexandria, VA.
Year
1996
ISBN
0-9615027-3-8
Description
 
]. A traditional food for the native Australians who roasted and ground the seeds to a paste prior to consumption[
1298
Title
Wattles of the Pilbara
Publication
 
Author
 
Website
http://worldwidewattle.com/speciesgallery/descriptions/pilbara/html/default.htm
Publisher
 
Year
0
ISBN
 
Description
A website with factsheets for the various Acacia species that grow in the Pilbara region of northwestern Western Australia
]. The sweetly-scented pods are 4-12 cm long, 2-3 mm wide, containing very dark brown to blackish, narrowly obloid to obloid-ellipsoid seeds 3.5 - 4.5mm long and about 2mm wide[
1298
Title
Wattles of the Pilbara
Publication
 
Author
 
Website
http://worldwidewattle.com/speciesgallery/descriptions/pilbara/html/default.htm
Publisher
 
Year
0
ISBN
 
Description
A website with factsheets for the various Acacia species that grow in the Pilbara region of northwestern Western Australia
].
Acacia seeds are highly nutritious and contain around 26% protein, 26% available carbohydrate, 32% fibre and 9% fat. The fat content is higher than most legumes with the aril providing the bulk of fatty acids present. These fatty acids are largely unsaturated. The energy content is high in all species tested, averaging 1480 ±270 kJ per 100g. The seeds are low glycaemic index foods - the starch is digested and absorbed very slowly, producing a small, but sustained rise in blood glucose and so delaying the onset of exhaustion in prolonged exercise[
1295
Title
Acacia in Australia: Ethnobotany and Potential Food Crop
Publication
Janick (ed.), Progress in new crops pp 228-236, (1996) ASHS Press, Alexandria, VA.
Author
Lister P.R.; Holford P.; Haigh T.; Morrison D.A.
Website
https://hort.purdue.edu/newcrop/proceedings1996/v3-toc.html
Publisher
ASHS Press, Alexandria, VA.
Year
1996
ISBN
0-9615027-3-8
Description
 
].

The ground seed can be used to produce a high quality, caffeine-free coffee-like beverage[
1295
Title
Acacia in Australia: Ethnobotany and Potential Food Crop
Publication
Janick (ed.), Progress in new crops pp 228-236, (1996) ASHS Press, Alexandria, VA.
Author
Lister P.R.; Holford P.; Haigh T.; Morrison D.A.
Website
https://hort.purdue.edu/newcrop/proceedings1996/v3-toc.html
Publisher
ASHS Press, Alexandria, VA.
Year
1996
ISBN
0-9615027-3-8
Description
 
].

Medicinal

The Warlpiri people of Central Australia have used the foliage of this species for medicinal purposes: the phyllodes are boiled and used as a wash for general complaints, or used to smoke babies as a treatment for diarrhoea[
1298
Title
Wattles of the Pilbara
Publication
 
Author
 
Website
http://worldwidewattle.com/speciesgallery/descriptions/pilbara/html/default.htm
Publisher
 
Year
0
ISBN
 
Description
A website with factsheets for the various Acacia species that grow in the Pilbara region of northwestern Western Australia
].

The bark of all Acacia species contains greater or lesser quantities of tannins and are astringent. Astringents are often used medicinally - taken internally, for example. they are used in the treatment of diarrhoea and dysentery, and can also be helpful in cases of internal bleeding. Applied externally, often as a wash, they are used to treat wounds and other skin problems, haemorrhoids, perspiring feet, some eye problems, as a mouth wash etc[
601
Title
The Useful Native Plants of Australia.
Publication
 
Author
Maiden J.H.
Website
http://www.biodiversitylibrary.org
Publisher
Turner & Co.; London.
Year
1889
ISBN
 
Description
Terse details of the uses of many Australian plants and other species naturalised, or at least growing, in Australia. It can be downloaded from the Internet.
,
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].
Many Acacia trees also yield greater or lesser quantities of a gum from the trunk and stems. This is sometimes taken internally in the treatment of diarrhoea and haemorrhoids[
601
Title
The Useful Native Plants of Australia.
Publication
 
Author
Maiden J.H.
Website
http://www.biodiversitylibrary.org
Publisher
Turner & Co.; London.
Year
1889
ISBN
 
Description
Terse details of the uses of many Australian plants and other species naturalised, or at least growing, in Australia. It can be downloaded from the Internet.
].

Agroforestry Uses:

This species has excellent potential for planting as low shelter belts and for sand stabilization[
1298
Title
Wattles of the Pilbara
Publication
 
Author
 
Website
http://worldwidewattle.com/speciesgallery/descriptions/pilbara/html/default.htm
Publisher
 
Year
0
ISBN
 
Description
A website with factsheets for the various Acacia species that grow in the Pilbara region of northwestern Western Australia
]

Other Uses

The heartwood is dark brown; it is clearly demarcated from the narrow band of pale sapwood. The wood is very dense, but is generally only available in small dimensions and so is only used for fuel. It makes an excellent fuel and produces one of the best charcoals in Australia's arid belt[
1298
Title
Wattles of the Pilbara
Publication
 
Author
 
Website
http://worldwidewattle.com/speciesgallery/descriptions/pilbara/html/default.htm
Publisher
 
Year
0
ISBN
 
Description
A website with factsheets for the various Acacia species that grow in the Pilbara region of northwestern Western Australia
,
1300
Title
Australian Trees and Shrubs: Species for Land Rehabilitation and Farm Planting in the Tropics
Publication
 
Author
Doran J.C.; Turnbull J.W. (Editors)
Publisher
Australian Centre for International Agricultural Research; Canbe
Year
1997
ISBN
1-86320-127-0
Description
A very informative book, rich in information about the uses, cultivation needs and very much more for over 160 species of Australian trees and shrubs.
].

Propagation

The seed of most, if not all, members of this genus has a hard seedcoat and may benefit from scarification before sowing to speed up germination. This can usually be done by pouring a small amount of nearly boiling water on the seeds (being careful not to cook them!) and then soaking them for 12 - 24 hours in warm water. By this time they should have imbibed moisture and swollen - if they have not, then carefully make a nick in the seedcoat (being careful not to damage the embryo) and soak for a further 12 hours before sowing.
Acacia seeds that have matured fully on the bush and have been properly dried have a hard seed coat and can be stored in closed containers without deterioration for 5 - 10 years or more in dry conditions at ambient temperatures. It is best to remove the aril, which attracts weevils and can lead to moulds forming. The arils are easilyremoved by placing the seeds in water and rubbing them between the hands, then drying the seeds and winnowing them[
1294
Title
Potential of Australian Acacias in combating hunger in semi-arid lands
Publication
Conservation Science W. Aust. 4 (3):161-169 (2002)
Author
Rinaudo A.; Patel P.; Thomson L.A.J.
Publisher
 
Year
2002
ISBN
 
Description
 
].
Cite as: Tropical Plants Database, Ken Fern. tropical.theferns.info. 2018-09-22. <tropical.theferns.info/viewtropical.php?id=Acacia+adsurgens>

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