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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 aristulata

Acacia aristulata Maslin, 1999

Racosperma aristulatum (Maslin) Pedley

Native distribution areas:
Acacia aristulata

Continental: Australasia
Regional: Australia
Western Australia

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

Maslin, B.R., 1999. Nuytsia; Bulletin of the Western Australian Herbarium 12(3): 320 (1999).


Govaerts, R. et al. 2020. Acacia aristulata in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2020 Jul 25. Reference page.
International Plant Names Index. 2019. Acacia aristulata. Published online. Accessed: Jul 25 2019. 2019. Acacia aristulata. Missouri Botanical Garden. Published on the internet. Accessed: 2019 Jul 25.
Hassler, M. Jul. Acacia aristulata. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. Jul. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: Jul 25 {{{3}}}. Reference page.

Vernacular names

Acacia aristulata, also known as Watheroo wattle,[1] is a shrub belonging to the genus Acacia and the subgenus Phyllodineae endemic to Western Australia.


The erect or scrambling shrub typically grows to a height of 0.25 to 1 metre (1 to 3 ft)[2] and with a width of up to 1 m (3 ft 3 in).[1] It blooms from September to December and produces lemon- yellow to creamy-white flowers.[2] The spherical flower heads can last until January or February and the seed pods take around a year to become mature.[1]

The species was first formally described by the botanist Bruce Maslin in 199 as part of the work Acacia miscellany. The taxonomy of fifty-five species of Acacia, primarily Western Australian, in section Phyllodineae (Leguminosae: Mimosoideae) as published in the journal Nuytsia. It was reclassified as Racosperma aristulatum in 2003 by Leslie Pedley, then transferred back to the genus Acacia in 2005.[3]

It is native to an area on the Lesueur sandplain in the Wheatbelt region of Western Australia.[2] The shrub is found between Moora and Watheroo and is known in four localities extending within a range of approximately 35 km (22 mi).[1]

It is most often situated among rocky outcrops on top of low rocky ridges and hills growing in sandy-loamy-clay soils over granite and chert. The shrub is often a part of Allocasuarina woodland or low open shrubland communities. Species commonly associated with Acacia aristulata include Allocasuarina huegeliana, Diplolaena angustifolium, Dianella revoluta and Dryandra sessilis.[1]
See also

List of Acacia species


"Acacia aristulata — Watheroo Wattle". Species Profile and Threats Database. Department of the Environment and Energy. Retrieved 21 March 2018.
"Acacia aristulata". FloraBase. Western Australian Government Department of Parks and Wildlife.
"Acacia aristulata Maslin". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 21 March 2019.

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