Acacia macdonnelliensis

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Acacia macdonnelliensis
Acacia macdonnellensis subsp. teretifolia.jpg
Acacia macdonnellensis subsp. teretifolia
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Clade: Mimosoideae
Genus: Acacia
Species:
A. macdonnelliensis
Binomial name
Acacia macdonnelliensis
Maconochie
Acacia macdonnellensisDistMap565.png
Occurrence data from Australasian Virtual Herbarium
Synonyms [1] [2]
  • Acacia macdonnellensisMaconochie, orthographic variant
  • Racosperma macdonnelliense(Maconochie) Pedley

Acacia macdonnelliensis, commonly known as the MacDonnell mulga [3] or the Hill mulga, [4] is a species of Acacia native to central Australia. [5] The Indigenous Australians the Alyawarr peoples know the plant as irrar, the Kaytetye know it as arleth-arlethe or arwele arleth-arlethe and the Western Arrernte peoples know it as irrkwarteke. [6]

Contents

Taxonomy

There are two subspecies: [1]

Description

This bushy shrub or tree typically grows 3 to 6 metres (10 to 20 ft) tall and has deeply fissured grey bark. [2] It has sparsely hoary to glabrous branchlets with obscure, resinous ridges. It has erect, glabrous to hoary, grey-green phyllodes with a narrow elliptic to linear shape that are 4 to 15 centimetres (2 to 6 in) in length and 0.8 to 5 millimetres (0.031 to 0.197 in) wide. [5] It produces yellow flowers in July. [2] The dense golden flower spikes are 0.6 to 3 cm (0.24 to 1.18 in) in length and have a width of 3 to 6 mm (0.118 to 0.236 in). After flowering linear pale brown seed pods form that are constricted between each seed. Each pod has a length of 3 to 9.5 cm (1.2 to 3.7 in) and is 2 to 4 mm (0.08 to 0.16 in) wide. The dark brown seeds within are arranged longitudinally and are 2.5 to 5 mm (0.1 to 0.2 in) long. [5]

Distribution and habitat

Acacia macdonelliensis is found in southern parts of the Northern Territory around Alice Springs and in far eastern Pilbara and north eastern Goldfields regions of Western Australia. It grows in areas of sandstone and quartzite along rocky ridges and creeklines. [2] A. macdonnelliensis is drought and frost tolerant. [4]

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References

  1. 1 2 "Acacia macdonnelliensis Maconochie". Plants of the World Online. Royal Botanic Gardens, Kew . Retrieved 29 November 2020.
  2. 1 2 3 4 "Acacia macdonnelliensis". FloraBase . Western Australian Government Department of Parks and Wildlife . Retrieved 28 November 2020.
  3. International Legume Database and Information Service (ILDIS) V10.39 Nov 2011
  4. 1 2 "Acacia macdonnelliensis". Alice Springs Town Council. 2016. Retrieved 13 September 2016.
  5. 1 2 3 "Acacia macdonnelliensis Maconochie, J. Adelaide Bot. Gard. 1: 183; 184, fig. 3 (1978)". World Wide Wattle. 12 July 2016. Retrieved 12 September 2016.
  6. "Acacia macdonnellensis Maconochie subsp. macdonnellensis". NT Flora. Northern Territory Government . Retrieved 24 September 2018.