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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 olgana

Acacia olgana Maconochie, 1978

Racosperma olganum (Maconochie) Pedley

Native distribution areas:
Acacia olgana

Continental: Australasia
Regional: Australia
Northern Territory, South Australia, Western Australia

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

Maconochie, J.R., 1978. Journal of the Adelaide Botanic Gardens 1(3): 183.


Govaerts, R. et al. 2020. Acacia olgana in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 Aug 10. Reference page.
International Plant Names Index. 2019. Acacia olgana. Published online. Accessed: Aug 10 2019. 2019. Acacia olgana. Missouri Botanical Garden. Published online. Accessed: 10 Aug 2019.
Catalogue of Life: 2021 Annual Checklist
Acacia olgana – Taxon details on World Wide Wattle.

Vernacular names
English: Mount Olga Wattle

Acacia olgana, commonly known as Kata Tjuta wattle or Mount Olga wattle, is a shrub or tree in the genus Acacia that is found in central Australia.[1]


The shrub or tree typically grows to a height of 3 to 6 metres (10 to 20 ft)[2] but can be as tall as 15 metres (49 ft). It has rough, slightly fissured bark that is grey or grey-brown in colour with angular branches that are light brown to reddish in colour and mostly glabrous. The evergreen phyllodes sometimes have reddish margins. The blade shape is flat and linear to narrowly elliptic with a length of 6 to 18 centimetres (2 to 7 in) and a width of 2 to 10 millimetres (0.079 to 0.394 in) long with one prominent central nerve.[1]

The species was first formally described by the botanist John Maconochie in 1978 as part of the work Notes on the genus Acacia in the Northern Territory as published in the Journal of the Adelaide Botanic Gardens. It was later reclassified as Racosperma olganum by Leslie Pedley in 1986 but transferred back to the genus Acacia in 2006.[3]

A. olgana has a scattered distribution from the far east of central Western Australia in the Goldfields region[2] into the south of the Northern Territory and north western South Australia.[4][1]
See also

List of Acacia species


"Acacia olgana". World Wide Wattle. Western Australian Herbarium. Retrieved 28 September 2018.
"Acacia olgana". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"Acacia olgana Maconochie". World Wide Wattle. Global Biodiversity Information Facility. Retrieved 28 September 2018.
"Acacia olgana (Leguminosae) Kaltiwarta". Seeds of South Australia. Government of South Australia. Retrieved 28 September 2018.

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