Acacia peuce

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Acacia peuce
Acacia peuce adult.jpg
Adult A. peuce
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Clade: Mimosoid clade
Genus: Acacia
Species:
A. peuce
Binomial name
Acacia peuce
Acacia peuceDistMap687.png
Occurrence data from AVH
Synonyms

Racosperma peuce(F.Muell.) Pedley

Acacia peuce juvenile foliage Acacia peuce juvenile foliage.jpg
Acacia peuce juvenile foliage
Acacia peuce bark Acacia peuce bark.jpg
Acacia peuce bark
Acacia peuce stand Acacia peuce stand.jpg
Acacia peuce stand

Acacia peuce, commonly known as Birdsville wattle, waddy, waddi, or waddy-wood, is a tree species that is endemic to central Australia. The Arunda peoples know the tree as Aratara, the Pitta Pitta know it as Kurriyapiri and Red Ochre Father while the lower Arrernte know it as Arripar. [3]

Contents

Description

The glabrous tree grows up to 15 to 18 metres (49 to 59 ft) high, with short horizontal branches and pendulous branchlets covered in needle-like phyllodes adapted for the arid dry climate. It has a distinctive habit more similar to a sheoak or a conifer . [4]

The wood is extremely hard and dense with dark purple coloured heartwood. The trunk and branches are covered with a fibrous grey-brown bark. [5]

The dull green phyllodes are sometimes continuous with the branchlet but are more often articulate,. They are quadrangular with a length of approximately 8 to 12 centimetres (3.1 to 4.7 in) sometimes as long as 40 cm (16 in) with a width of about 1 millimetre (0.04 in). [3]

It is a very slow growing species and can live up to 200 years. Sapling and juvenile trees have a conifer like habit and can take 3 years to reach a height of 1 metre (3 ft). [6] Some individuals are estimated to live over 500 years. [4]

Inflorescences are simple and axillary supported on peduncles 12 to 15 millimetres (0.47 to 0.59 in) long. The inflorescence heads are globular and sparse with 5-merous flowers. [3] The flowers are a pale-yellow colour [5] and appear in autumn and spring usually following heavy rain events. [4]

Following flowering the species will form long, flat, pods with a papery texture containing large, flat seeds. [4]

Taxonomy

The species was originally described by the botanist Ferdinand von Mueller in 1863 that was published in the work Fragmenta Phytographiae Australiae . The only synonym is Racosperma peuce as described by Leslie Pedley in 1986 in the work Derivation and dispersal of Acacia (Leguminosae), with particular reference to Australia, and the recognition of Senegalia and Racosperma. published in the Botanical Journal of the Linnean Society . [7]

Acacia peuce is most closely related to A. crombiei and A. carneorum . [3]

Distribution

Although speculated to have been widespread across central Australia during wetter climates 400,000 years ago, [8] the population is now mostly restricted to three sites, [3] separated by the encroaching Simpson Desert. In the Northern Territory, the species is restricted to the Mac Clark (Acacia peuce) Conservation Reserve which is surrounded by a pastoral lease, Andado Station. The other two sites are near Boulia and Birdsville in Queensland. [6] The tree is found in open arid plains that usually receive less than 150 millimetres (5.9 in) of rain per annum. [6] They grow on shallow sand aprons overlaying gibber or clay slopes and plains and between longitudinal dunes or on alluvial flats between ephemeral watercourses. [4] The soils can be saline or contain high levels of gypsum. [9] The total population is approximately 76,000 individuals spread over a total area of 74,000 square kilometres (28,572 sq mi) but with a total area of occupancy of only 400 square kilometres (154 sq mi). [4]

Ecology

The tree usually occurs in pure stands in low open woodlands. Associated species include shrubs such as Rhagodia , Atriplex , Grevillea stricta , Atlaya hemiglauca and Hakea leucoptera . It is more often found with associated grass species such as Astrebla and Eragrostis . Along drainage lines it can also be found along with Eucalyptus coolabah . [9]

See also Evolutionary anachronism#Australasian realm.

Uses

Indigenous Australians used the hard and heavy wood of the tree to produce clubs or waddy . [3]

The tree is host to various butterflies and their larvae and also provides protective habitat for birds from grey falcons to desert finches. The foliage is often chewed by insects, but saplings were eaten by grazers such as cattle and diprotodon. [8] Pastoralists used the tree to make highly durable and termite resistant fenceposts and stockyards from the timber. [4] [9] Stumps coppice vigorously after being cut for posts.[ citation needed ]

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References

  1. "National recovery plan for threatened Acacias and Ricinocarpos gloria-media in central Australia" (PDF). Alice Springs, NT: Northern Territory Department of Natural Resources, Environment and the Arts. Retrieved 22 February 2014.
  2. "Acacia peuce". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 22 February 2014.
  3. 1 2 3 4 5 6 "World Wide Wattle" . Retrieved 22 February 2014.
  4. 1 2 3 4 5 6 7 "Acacia peuce — Waddy, Waddi, Waddy-wood, Birdsville Wattle". Species Profile and Threats Database. Department of the Environment and Energy. 15 July 2015. Retrieved 12 June 2017.
  5. 1 2 "Waddy-wood Acacia peuce F.Muell" (PDF). Threatened Species of the Northern Territory. Northern Territory Government . Retrieved 12 June 2017.
  6. 1 2 3 Caddie Brain (7 June 2013). "Australia's loneliest tree finds some friends". Australian Broadcasting Corporation . Retrieved 12 June 2017.
  7. "Acacia peuce F.Muell. Birdsville Wattle". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 12 June 2017.
  8. 1 2 "The curious case of Acacia peuce". A Question Of Balance. 2017. Archived from the original on 30 March 2017. Retrieved 12 June 2017.
  9. 1 2 3 Douglas J. Boland; Maurice William McDonald (2006). Forest Trees of Australia. CSIRO Publishing. ISBN   9780643069695.