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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordo: Fabales

Familia: Fabaceae
Subfamilia: Caesalpinioideae
Tribus: Acacieae
Genus: Acacia
Species: Acacia volubilis

Acacia volubilis F.Muell., 1877

Racosperma volubile (F.Muell.) Pedley

Native distribution areas:
Acacia volubilis

Continental: Australasia
Regional: Australia
Western Australia

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
Primary references

Mueller, F.v. 1876–1877. Fragmenta Phytographiae Australiae Vol. 10. 145 pp. J. Ferres, Melbourne. BHL Reference page. : 10:98.


Govaerts, R. et al. 2020. Acacia volubilis in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2020 Aug 18. Reference page.
International Plant Names Index. 2019. Acacia volubilis. Published online. Accessed: Aug 18 2019. 2019. Acacia volubilis. Missouri Botanical Garden. Published on the internet. Accessed: 2019 Aug 18.
Catalogue of Life: 2020 Annual Checklist
Acacia volubilis – Taxon details on World Wide Wattle.
USDA, ARS, Germplasm Resources Information Network. Acacia volubilis in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names

Acacia volubilis, also known as tangle wattle,[1] is a shrub belonging to the genus Acacia. It is native to a small area in the Wheatbelt region of Western Australia.[2] It has been declared endangered under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999.[3]


The wiry entangled shrub has a dense domed compact habit and typically has a height of 0.3 to 0.4 metres (1.0 to 1.3 ft) and a width of 1 m (3.3 ft).[2] The branchlets have a twisted appearance with parallel ridges running along their length. Each phyllode is widely separated from the next. Phyllodes are around 9 millimetres (0.35 in) in length and 1 mm (0.04 in) long wide and have the same shape as the branchlets.[1] It blooms in June and July and produces bright yellow inflorescences[2] with a globular shape.[1]

The species was first formally described by the botanist Ferdinand von Mueller in 1877 in the work Fragmenta Phytographiae Australiae. It was reclassified as Racosperma volubile by Leslie Pedley in 2003 then back to the current name in 2006.[4]

The species name is taken from the Latin word meaning twining referring to the twisted, tangled and twining habit of the plant.[5]

It is found in a small are between Cunderdin, Quairading and Tammin in gravelly sand or sandy clay soils.[2] It is found along road verges and in shrubland communities over laterite or granite. Associated species include different species of Allocasuarina, Acacia, Grevillea, Actinostrobus and Hakea.[5]

The species was thought to be extinct until botanist Brenden Lepschi found a small population near Cunderdin in 1996. Other populations were also found. Since each population was small and highly threatened, it was declared as Rare Flora in October 1996 and as Critically Endangered in December 1997.[5] In 2003 only 88 plants were known spread over 12 populations.
See also

List of Acacia species


"Tangle Wattle (Acacia Volubilis) Interim Recovery Plan 2003-2008". Commonwealth of Australia. 2003. Retrieved 31 August 2018.
"Acacia volubilis". FloraBase. Western Australian Government Department of Parks and Wildlife.
Acacia volubilis, Species Profile and Threats Database, Department of the Environment and Heritage, Australia.
"Acacia volubilis F.Muell". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 31 August 2018.
Anne Harris; Andrew Brown (October 2003). "Tangle wattle Acacia volubilis Interim recovery plan 2003-2008" (PDF). Department of Conservation and Land Management. Retrieved 31 August 2018.

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