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Useful Temperate Plants

Acacia paradoxa

DC.

Fabaceae


A very polymorphic species[
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.
]. It hybridises with several other members of this genus, especially with species in the Acacia verniciflua complex[
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.
].
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

Acacia armata R.Br.

Acacia microcantha A.Dietr.

Acacia ornithophora Sweet

Acacia tristis Graham

Acacia undulata Willd.

Mimosa armata (R.Br.) Poir.

Mimosa paradoxa (DC.) Poir.

Phyllodoce armata (R.Br.) Link

Phyllodoce undulata Willd. ex Link

Racosperma armata (R.Br.) Mart.

Common Name: Kangaroo Thorn

Acacia paradoxa
Flowering plants in Victoria, Australia
Photograph by: Richardson R.G.
Creative Commons License
Acacia paradoxa Acacia paradoxa Acacia paradoxa Acacia paradoxa Acacia paradoxa Acacia paradoxa

General Information

Acacia paradoxa is an erect or spreading, thorny, evergreen shrub that can grow 1 - 4 metres tall[
365
Title
Flora of New South Wales
Publication
 
Author
 
Website
http://plantnet.rbgsyd.nsw.gov.au/floraonline.htm
Publisher
 
Year
0
ISBN
 
Description
An on-line resource giving a brief botanical description of all the native plants of New South Wales, their habitat and range, together with diagrams and photographs of the plants.
]. Although it produces leaves as a seedling, llike most members 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 sometimes harvested from the wild for local use as a food and medicine. It is grown as an ornamental, and can be used as a hedge.
The plant is naturalized in the United States and is invasive in South Africa. It invades exposed erosion slopes, valleys, pine plantations, agricultural lands and fynbos. Its dense growth may potentially reduce the abundance of native species. The seeds are dispersed by ants, they tolerate diverse environmental conditions and have the potential to colonise the land[
1049
Title
SANBI Invasive Alien Plant Alert
Publication
 
Author
South African National Biodiversity Institute
Website
http://www.sanbi.org/information-resources/infobases/invasive-alien-plant-alert
Publisher
 
Year
0
ISBN
 
Description
A series of leaflets on invasive plant species produced on the Internet and available for download
].

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

200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
,
265
Title
Flora of the Sydney Region
Publication
 
Author
Carolin. R. & Tindale. M.
Publisher
Reed. Australia.
Year
1993
ISBN
0730104001
Description
Concise flora with little beyond an extensive key, species descriptions, very brief habitat description.
,
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 - Southern Australia, New South Wales, Victoria and Queensland.

Habitat

Grows in dry sclerophyl forests[
265
Title
Flora of the Sydney Region
Publication
 
Author
Carolin. R. & Tindale. M.
Publisher
Reed. Australia.
Year
1993
ISBN
0730104001
Description
Concise flora with little beyond an extensive key, species descriptions, very brief habitat description.
]. Usually grows in woodland or open forest[
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.
]. Found in a wide range of habitats, growing in various soil types[
365
Title
Flora of New South Wales
Publication
 
Author
 
Website
http://plantnet.rbgsyd.nsw.gov.au/floraonline.htm
Publisher
 
Year
0
ISBN
 
Description
An on-line resource giving a brief botanical description of all the native plants of New South Wales, their habitat and range, together with diagrams and photographs of the plants.
].

Properties

Weed PotentialYes
Edibility Rating *  *
Other Uses Rating *  *
HabitEvergreen Shrub
Height5.00 m
PollinatorsInsects
Cultivation StatusOrnamental, Wild

Cultivation Details

Acacia paradoxa is found in the temperate and subtropical areas of Australia. It is able to withstand occasional and short-lived frosts, tolerating temperatures occasionally falling to between -5 and -10°c so long as the weather is fairly dry[
11
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
].
Apart from its sensitivity to cold, this is a very tough plant that stands both wet and drought well, it is lime-tolerant and also withstands salt-laden winds[
260
Title
Conservatory and Indoor Plants Volumes 1 & 2
Publication
 
Author
Phillips. R. & Rix. M.
Publisher
Pan Books, London.
Year
1998
ISBN
0-330-37376-5
Description
Excellent photos of over 1,100 species and cultivars with habits and cultivation details plus a few plant uses. Many species are too tender for outdoors in Britain though there are many that can be grown outside.
]. Prefers a sandy loam and a very sunny position[
1
Title
RHS Dictionary of Plants plus Supplement. 1956
Publication
 
Author
F. Chittendon.
Publisher
Oxford University Press
Year
1951
ISBN
-
Description
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [200]).
]. Succeeds in dry soils. Succeeds in any good garden soil that is not excessively limey[
11
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
]. Most members of this genus become chlorotic when grown on limey soils[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
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[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].

Edible Uses

Flowers - cooked[
144
Title
Wild Food in Australia.
Publication
 
Author
Cribb. A. B. and J. W.
Publisher
Fontana
Year
1976
ISBN
0-00-634436-4
Description
A very good pocket guide.
]. Rich in pollen, they are often used in fritters.

Medicinal

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:

Plants are heavily armed with thorns and make a good screen or hedge in warm temperate areas, though they can be difficult to manage[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
,
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.
]. It is used for covering coastal sands with an unapproachable, prickly vegetation[
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.
].

Other Uses

A yellow dye is obtained from the flowers[
168
Title
Nature's Colors - Dyes from Plants.
Publication
 
Author
Grae. I.
Publisher
MacMillan Publishing Co. New York.
Year
1974
ISBN
0-02-544950-8
Description
A very good and readable book on dyeing.
].
A green dye is obtained from the seed pods[
168
Title
Nature's Colors - Dyes from Plants.
Publication
 
Author
Grae. I.
Publisher
MacMillan Publishing Co. New York.
Year
1974
ISBN
0-02-544950-8
Description
A very good and readable book on dyeing.
].

The wood is small but beautifully grained, hard and durable[
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.
]. Light in weight and tough, but seldom used.

Propagation

Seed - best sown as soon as it is ripe in a sunny position in a warm greenhouse[
1
Title
RHS Dictionary of Plants plus Supplement. 1956
Publication
 
Author
F. Chittendon.
Publisher
Oxford University Press
Year
1951
ISBN
-
Description
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [200]).
].The dried 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. Sow the seed in Spring in a greenhouse. As soon as the seedlings are large enough to handle, prick them out into individual pots and grow them on in a sunny position in the greenhouse for their first winter. Plant them out in late spring or early summer, after the last expected frosts, and consider giving them some protection from the cold for their first winter outdoors.
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
 
].
Cuttings of half-ripe wood with a heel, mid summer in individual pots in a frame[
78
Title
Propagation of Trees, Shrubs and Conifers.
Publication
 
Author
Sheat. W. G.
Publisher
MacMillan and Co
Year
1948
ISBN
-
Description
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
]. Overwinter in a greenhouse for the first winter and plant out in their permanent positions in late spring or early summer. Fair percentage[
78
Title
Propagation of Trees, Shrubs and Conifers.
Publication
 
Author
Sheat. W. G.
Publisher
MacMillan and Co
Year
1948
ISBN
-
Description
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
].
Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2018-10-20. <temperate.theferns.info/plant/Acacia+paradoxa>

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