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Australia, CC BY 2.0 <>, via Wikimedia Commons" href="">Grass Wattle (2889182205)

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 anomala

Acacia anomala C.A.Gardner ex Court, 1978

Racosperma anomalum (Gardner ex Court) Pedley

Native distribution areas:
Acacia anomala

Continental: Australasia
Regional: Australia
Western Australia

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

Gardner, C.A., 1878. Nuytsia; Bulletin of the Western Australian Herbarium 2 (4): 168.


Govaerts, R. et al. 2020. Acacia anomala 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 anomala. Published online. Accessed: Jul 25 2019. 2019. Acacia anomala. Missouri Botanical Garden. Published on the internet. Accessed: 2019 Jul 25.
Hassler, M. Jul. Acacia anomala. 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
English: Chittering Grass Wattle

Acacia anomala, commonly known as grass wattle is a shrub belonging to the genus Acacia. It is native to a small area along the west coast of Western Australia,[4] and is listed as a vulnerable species under the Western Australian Wildlife Conservation Act and the Commonwealth Environmental Protection Act.[1][2]


The shrub has a slender rush-like habit and typically grows to a height of 0.2 to 0.5 metres (0.7 to 1.6 ft).[4] It has a multi-stemmed base with narrowly winged upper stems. There are few to no phyllodes which have a linear to narrowly elliptic shape and are 4 to 10 centimetres (1.6 to 3.9 in) in length and have a width of 2 to 6 millimetres (0.08 to 0.24 in).[5] It produces yellow flowers between August and September.[4] The simple inflorescences are supported on glabrous peduncles that are 1 to 4 mm (0.04 to 0.16 in) long. The flower spikes are usually 1 to 3 cm (0.4 to 1.2 in). Seed pods form later that have a linear shape and are 5 cm (2.0 in) in length and 3 mm (0.12 in). The seeds in the pod are 2.5 mm (0.10 in) in length with an oblong shape.[5]

The species was first formally described by Arthur Bertram Court in 1978 as part of the work Three new species of Acacia (Mimosaceae) from Western Australia published in the journal Nuytsia.[3] It was briefly reclassified by Leslie Pedley in 2003 as Racosperma anomalum,[6] then back to the original name in 2006, with the dispute being finally resolved in 2011.[7][8][9] (See Acacia.)

The type specimen was collected by Charles Austin Gardner and H.H.Kretchmar in 1961 between Muchea and Chittering.[5] It is very similar in appearance to Acacia applanata.[5]

The species has a very small range, confined to an area between Chittering, Swan and Kalamunda where it grows on the slopes of the Darling Range in lateritic soils.[4] It is mostly found as part of Eucalyptus woodland communities.[5]
See also

List of Acacia species


Government Gazette(2018) Wildlife Conservation (Rare Flora) Notice 2017.Government Gazette, 16 January 2018, p.185 Retrieved 13 June 2018.
SPRAT (Species Profile and Threats database): Acacia anomala. Retrieved 16 November 2018.
Court, A.B. (1978) Three new species of Acacia (Mimosaceae) from Western Australia. Nuytsia 2(4) 168-177.
"Acacia anomala". FloraBase. Western Australian Government Department of Parks and Wildlife.
"Acacia anomala". World Wide Wattle. Western Australian Herbarium. Retrieved 31 August 2018.
Pedley, L. (2003). "A synopsis of Racosperma. C.Mart. (Leguminosae: Mimosoideae)". Austrobaileya. 6 (3): 445–496. JSTOR 41738994.
"The Acacia debate" (PDF). IBC2011 Congress News. Retrieved May 5, 2016.
Smith, Gideon F. & Figueiredo, Estrela (2011). "Conserving Acacia Mill. with a conserved type: What happened in Melbourne?". Taxon. 60 (5): 1504–1506. doi:10.1002/tax.605033. hdl:2263/17733.

"Acacia anomala C.A.Gardner ex Court". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 31 August 2018.

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