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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 quadrisulcata

Acacia quadrisulcata F.Muell., 1863

Racosperma quadrisulcatum (F.Muell.) Pedley

Native distribution areas:
Acacia quadrisulcata

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. 1862–1863. Fragmenta Phytographiae Australiae. Vol. 3. 177 pp. J. Ferres, Melbourne. BHL Reference page. : 3(22): 127.


Govaerts, R. et al. 2020. Acacia quadrisulcata 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 12. Reference page.
International Plant Names Index. 2019. Acacia quadrisulcata. Published online. Accessed: Aug 12 2019. 2019. Acacia quadrisulcata. Missouri Botanical Garden. Published on the internet. Accessed: 2019 Aug 12.
Catalogue of Life: 2021 Annual Checklist
Acacia quadrisulcata – Taxon details on World Wide Wattle.

Vernacular names

Acacia quadrisulcata is a shrub of the genus Acacia and the subgenus Phyllodineae endemic to Western Australia.


The spreading pungent shrub typically grows to a height of 0.4 to 1 metre (1.3 to 3.3 ft).[1] The branchlets are covered in small curved hairs and have scarious triangular stipules that are around 1 millimetre (0.039 in) in length. The evergreen rigid and pungent phyllodes are quadrangular in section with a length of 7 to 20 mm (0.276 to 0.787 in) and a width of around 1 mm (0.039 in).[2]

It blooms from September to December and produces yellow flowers.[1] The simple inflorescences are arranged with one per axil with spherical flower-heads containing 15 to 20 light golden flowers that turn orange-brown when dry. After flowering linear yellow woodyseed pods form that are around 5 centimetres (2.0 in) in length and around 4 mm (0.157 in) wide. The mottled seeds within the pods have an ovate to oblong shape and are about 3 mm (0.118 in) in length.[2]

The phyllodes resemble those of Acacia tetragonophylla and the acicular phyllode variant of Acacia maitlandii.[3]

The species was first formally described by the botanist Ferdinand von Mueller in 1863 as part of the work Fragmenta Phytographiae Australiae. It was reclassified as Racosperma quadrisulcatum by Leslie Pedley in 2003 then transferred back to the genus Acacia in 2006.[4]

It is native to an area between Northampton and Shark Bay in the Mid West region of Western Australia where it is found on sand plains and sandhills growing in sandy clay soils over limestone or laterite.[1] The shrub is usually part of a heath or shrubland communities.[2]
See also

List of Acacia species


"Acacia quadrisulcata". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"Acacia quadrisulcata". World Wide Wattle. Western Australian Herbarium. Retrieved 4 October 2018.
"Acacia tetragonophylla". World Wide Wattle. Western Australian Herbarium. Retrieved 4 October 2018.
"Acacia quadrisulcata F.Muell". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 4 October 2018.

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