Acacia tumida

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Acacia tumida
CSIRO ScienceImage 1519 Acacia tumida Seed Pod.jpg
Acacia tumida seed pods
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. tumida
Binomial name
Acacia tumida
Acacia tumidaDistMap918.png
Occurrence data from AVH
Synonyms

Racosperma tumidum (F.Muell. ex Benth.) Pedley

Acacia tumida, known colloquially as pindan wattle, spear wattle or wongai, [1] is a species of Acacia native to northern and western Australia. [2]

Contents

Description

The openly branched spreading tree or shrub typically grows to a height of 5 to 15 metres (16 to 49 ft) with a well developed canopy. It has hard grey glossy bark that is occasionally fissured [3] with pruinose orange to yellow branchlets. It has falcate to subfalcate glaucous green phyllodes that are 6 to 25 centimetres (2 to 10 in) long and 0.7 to 6 cm (0.3 to 2.4 in) wide. [4]

It produces between April and October and produces yellow [2] inflorescences, usually racemose or axillary or terminal panicles 20 cm (7.9 in) long. These eventually develop into narrow oblong woody glabrous seed pods that are 3 to 12 cm (1.2 to 4.7 in) in length containing glossy black seeds. [4]

A. tumida grows quickly but has a short lifespan, usually less than 10 years. [3]

Range

A. tumida has a range that extends from the Kimberley, Pilbara and north eastern Goldfields regions of Western Australia including much of the Great Sandy Desert. It also extends into the Victoria River district of the Northern Territory. [4] It grows well in sandplain areas in red sandy or pindan soils over sandstone. [2] They often form dense thickets with spinifex.

It is also cultivated in Yemen, Vietnam, [4] Senegal and Niger. [3]

Varieties

There are four recognised varieties of Acacia tumida:

Uses

Indigenous Australians used the trunk of young trees to fashion spears and boomerangs. The green seed pods were cooked over coals and the seeds then eaten. Fully ripened black seeds were ground into flour mixed with water and consumed as a paste or cooked and eaten as a damper. [1] Other traditional uses include making string from the bark and using the gum exudate as a food source. [4]

It is cultivated in Senegal and Niger, where it is used as good quality firewood and to create low windbreaks. It is also used with slower growing plants for binding soil. [3]

See also

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References

  1. 1 2 "Acacia tumida (Spear Wattle)". Society for Kimberley Indigenous Plants and Animals. 2011-11-07. Retrieved 17 September 2016.
  2. 1 2 3 "Acacia tumida F.Muell. ex Benth". FloraBase . Western Australian Government Department of Parks and Wildlife.
  3. 1 2 3 4 "Acacia tumida F. Muell. ex Benth". Food and Agriculture Organization . Retrieved 17 September 2016.
  4. 1 2 3 4 5 "Acacia tumida F. Muell. ex Benth., Fl. Austral. 2: 409 (1864)". World Wide Wattle. 12 July 2016. Retrieved 17 September 2016.