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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 prainii

Acacia prainii Maiden, 1917

Acacia dentifera var. parvifolia S.Moore
Acacia prolifera J.M.Black
Racosperma prainii (Maiden) Pedley

Native distribution areas:
Primary references

Maiden, J.H. , 1917. Journal and proceedings of the Royal Society of New South Wales 51:238.


Govaerts, R. et al. 2020. Acacia prainii in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 Aug 12. Reference page.
International Plant Names Index. 2019. Acacia prainii. Published online. Accessed: Aug 12 2019. 2019. Acacia prainii. Missouri Botanical Garden. Published online. Accessed: 12 Aug 2019.
Catalogue of Life: 2021 Annual Checklist
Acacia prainii – Taxon details on World Wide Wattle.
USDA, ARS, Germplasm Resources Information Network. Acacia prainii in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names
English: Prain's Wattle

Acacia prainii, commonly known as Prain's wattle, is a shrub or tree belonging to the genus Acacia and the subgenus Phyllodineae endemic to Australia.


The erect and bushy shrub or tree typically grows to a height of 1.0 to 3.0 metres (3 to 10 ft).[2] It has angled branchlets with fine yellow ribs. The ascending to erect pungent smooth phyllodes have a linear shape and are flat with a length of 2 to 11 centimetres (0.8 to 4.3 in) and 0.5 to 3 millimetres (0.020 to 0.118 in) wide and have prominent midrib and marginal nerves.[3] It blooms from July to October and produces yellow flowers.[2] The inflorescences appear on three to seven headed racemes, the showy spherical flower heads contain 10 to 24 light golden flowers. After flowering curved seed pods form that are rounded over seeds and have a length of around 8.5 cm (3 in) and a width of 5 to 7 mm (0.197 to 0.276 in) long. The shiny balck seeds within have an oblong-elliptic to ovate shape and are 3.5 to 6 mm (0.138 to 0.236 in) in length.[3]

The species was first formally described by the botanist Joseph Maiden in 1917 as part of the Journal and Proceedings of the Royal Society of New South Wales. It was reclassfieid by Leslie Pedley in 2003 as Racosperma prainii then transferred back to the genus Acacia on 2006. Other synonyms include Acacia prolifera,[1] Acacia prainii var. linearis, Acacia dentifera var. parvifolia and Acacia prainii Maiden var. prainii.[4]

It has a scattered distribution through an area in the northern and eastern Wheatbelt, Pilbara and Goldfields-Esperance regions of Western Australia where it grows in red sandy, loamy and stony soils.[2] Its range extends into western South Australia and the Northern Territory where it is part of open mallee, Eucalyptus woodlands or spinifex communities.[3]
See also

List of Acacia species


"FloraBase Name Currency Search: Acacia prolifera". FloraBase. Retrieved 2018-12-19.
"Acacia prainii". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"Acacia prainii". World Wide Wattle. Western Australian Herbarium. Retrieved 3 October 2018.
"Acacia prainii Maiden". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 3 October 2018.

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