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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 nigricans

Acacia nigricans (Labill.) R.Br., 1813

Acacia ignorata K.Koch
Acacia rutifolia Link
Mimosa nigricans Labill.
Racosperma nigricans (Labill.) Pedley

Native distribution areas:
Acacia nigricans

Continental: Australasia
Regional: Australia
Western Australia

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

Brown, R. in W. T. Aiton, 1813. Hortus Kewensis; or, a Catalogue of the Plants Cultivated in the Royal Botanic Garden at Kew ed. 2, 5:465. 1813


Govaerts, R. et al. 2020. Acacia nigricans 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 nigricans. Published online. Accessed: Aug 10 2019. 2019. Acacia nigricans. Missouri Botanical Garden. Published online. Accessed: 10 Aug 2019.
Catalogue of Life: 2021 Annual Checklist
Acacia nigricans – Taxon details on World Wide Wattle.
USDA, ARS, Germplasm Resources Information Network. Acacia nigricans in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names

Acacia nigricans is a species of wattle which is endemic to an area on the south coast of Western Australia.


The shrub typically grows to a height of 0.4 to 2 m (1 ft 4 in to 6 ft 7 in)[1] and has hairy and ribbed branchlets with persistent and patent stipules. The leaves are composed of two pairs of pinnae with the proximal pinnae having a length of 2 to 4 mm (0.079 to 0.157 in) and the distal pinnae having a length of 5 to 15 mm (0.20 to 0.59 in), these in turn are made up of two pairs of proximal pinnules and three to eight pairs of distal pinnules all of which have an oblong to narrowly oblong with a length of 3 to 8 mm (0.12 to 0.31 in) and a width of 1.5 to 4 mm (0.059 to 0.157 in).[2] It produces yellow, globular flowers between mid-winter and late spring.[1]

The species was formally described in 1807 by French naturalist Jacques Labillardière who gave it the name Mimosa nigricans, based on plant material collected from Esperance.[3] It was transferred to the genus Acacia in 1813 by botanist Robert Brown.[4]

It is often situated on coastal sand dunes, on granite hills and among rocks growing in grey or white sandy soils along the south coast of Western Australia in the Goldfields-Esperance regions.[1] The bulk of the population extends from around Barker Inlet, about 50 km (31 mi) west of Esperance in the west out to around Israelite Bay in the east and extending inland to near Howick Hill, and is also found on several islands in the Recherche Archipelago usually as a part of heath and scrub communities.[2]
See also

List of Acacia species


"Acacia nigricans". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"Acacia nigricans". World Wide Wattle. Western Australian Herbarium. Retrieved 14 February 2021.
"Mimosa nigricans". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 24 June 2012.
"Acacia nigricans". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 24 June 2012.

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