Acacia acradenia

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Acacia acradenia
Acacia acradenia phyllodes and flowers.jpg
Between Prairie and Torrens Creek.
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. acradenia
Binomial name
Acacia acradenia
Acacia acradeniaDistMap10.png
Occurrence data from Australasian Virtual Herbarium
Synonyms [1]
  • Acacia acradenaA.D.Chapm. orth. var.
  • Acacia curvicarpa W.Fitzg.
  • Racosperma acradenium(F.Muell.) Pedley
Habit Acacia acradenia habit.jpg
Habit

Acacia acradenia, commonly known as Velvet Hill wattle and silky wattle, [2] is a species of flowering plant in the family Fabaceae and is native to northern and central Australia. It is a spindly shrub or tree with elliptic or narrowly elliptic phyllodes, spikes of orange or golden flowers and linear, crustaceous pods. The Nyangumarta peoples know it as walypuna [2] the Alyawarr call it ampwey, the Jaminjung and Ngaliwurru know it as mindiwirri, the Jaru as binbali or gundalyji, the Kaytetye as ampweye or arwele and the Warlpiri as ngardurrkura. [3]

Description

Acacia acradenia is spindly shrub that typically grows to a height of 0.9–4 m (2 ft 11 in – 13 ft 1 in) [4] but sometimes a tree asx high as 7.5 m (25 ft). It is generally V-shaped with an open and usually spindly form. It usually divides above ground level to form some main stems that are straight, diagonally spreading to erect and covered in smooth light grey bark except toward the base where it can become longitudinally fissured. The phyllodes are usually obliquely elliptic to narrowly elliptic in shape that becomes narrowed at both ends, 40–160 mm (1.6–6.3 in) long and 10–40 mm (0.39–1.57 in) wide with 3 or more prominent veins. [2] [5] It can bloom at any time of year [6] with a peak between March and July or October and November. [4] The flowers are orange or golden and borne in spikes mostly 20–60 mm (0.79–2.36 in) long on a peduncle 1–3 mm (0.039–0.118 in) long in pairs at the axil of the phyllodes. The fruit is a linear, crustaceous pod mostly 40–130 mm (1.6–5.1 in) long. The seeds are dark brown, 3–6 mm (0.12–0.24 in) long and 1.5–3 mm (0.059–0.118 in) wide with a pure white aril. [2] [5]

The species is relatively short lived, is easily killed by fire but sprouts readily from seeds. [2]

Taxonomy

Acacia acradenia was first formally described in 1888 by the botanist Ferdinand von Mueller in 1888 in his Iconography of Australian Species of Acacia and Cognate Genera Decas. [7] [8] The specific epithet (acradenia) means "a gland at the end", referring to the callus at the end of the phyllode. [9]

In tropical parts of the Northern Territory and Queensland A. acradenia is often mistaken for Acacia umbellata . [2]

The type specimen was collected by von Mueller near Depot Creek in the Northern Territory. [6]

Distribution

Velvet Hill wattle is found throughout the Northern Territory extending east into Queensland as far as Prairie [6] and Western Australia. [4] In Western Australia it has a scattered distribution through the Kimberley, Pilbara and northern Goldfields regions. [4] It is found on rocky plains or rocky hills, and along watercourses or damp areas. It grows well in stony soils, skeletal loams or clay pans [2] [4] as part of spinifex and Eucalypt [6] communities. Localized colonies form in areas following disturbance such as fire. [2]

Uses

Indigenous Australians use the species as a food source, water source, shade or shelter and to make weapons and implements. [3]

See also

Related Research Articles

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References

  1. 1 2 "Acacia acradenia". Australian Plant Census. Retrieved 30 April 2024.
  2. 1 2 3 4 5 6 7 8 "Acacia acradenia". Wattles of the Pilbara. Department of Environment and Conservation. 2010. Retrieved 12 October 2018.
  3. 1 2 "Acacia acradenia F.Muell". NT Flora. Northern Territory Government . Retrieved 12 October 2018.
  4. 1 2 3 4 5 "Acacia acradenia". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  5. 1 2 Tindale, Mary D.; Kodela, Philip G. Kodela, Philip G. (ed.). "Acacia acradenia". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 30 April 2024.
  6. 1 2 3 4 "Acacia acradenia". World Wide Wattle. Western Australian Herbarium . Retrieved 12 October 2018.
  7. ↑ "Acacia acradenia". APNI. Retrieved 30 April 2024.
  8. ↑ von Mueller, Ferdinand (1888). Iconography of Australian species of Acacia and cognate genera. Melbourne: J. Ferres, Government Printer. Retrieved 1 May 2024.
  9. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 126. ISBN   9780958034180.
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