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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 trinervata

Acacia trinervata Sieber ex DC., 1825

Acacia cunninghamii Sweet
Acacia elongata var. angustifolia (Benth.) Maiden
Acacia trinervata var. angustifolia Benth.
Acacia trinervata var. brevifolia Benth.
Racosperma trinervatum (Sieber ex DC.) Pedley

Native distribution areas:
Acacia trinervata

Continental: Australasia
Regional: Australia
New South Wales
Introduced into:
Assam, India

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

Sieber, F.W. in De Candolle, A.P., 1825. Prodromus systematis naturalis regni vegetabilis 2:451.


Govaerts, R. et al. 2020. Acacia trinervata in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2020 Aug 16. Reference page.
International Plant Names Index. 2019. Acacia trinervata. Published online. Accessed: Aug 16 2019. 2019. Acacia trinervata. Missouri Botanical Garden. Published on the internet. Accessed: 2019 Aug 16.
Catalogue of Life: 2020 Annual Checklist
Acacia trinervata – Taxon details on World Wide Wattle.
USDA, ARS, Germplasm Resources Information Network. Acacia trinervata in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10..

Vernacular names
English: Three-nerved Wattle

Acacia trinervata, the three-veined wattle,[4] is a species of flowering plant belonging to the genus Acacia and the subgenus Phyllodineae in the legume family Fabaceae.[5]


It is an erect or spreading shrub growing to a height of 1.5–3 m (4.9–9.8 ft). Its branchlets are smooth and angle towards the apices. The phyllodes are very narrowly elliptic to linear with a pointed sharp tip, and 1.5–5 cm by 1–3 mm wide. The 2 or 3 longitudinal veins are prominent. There is an inconspicuous gland 0–3 mm above the base, and the pulvinus is less than 1 mm long.

The inflorescences are simple, occurring singly in the phyllode axils on peduncles about 10–20 mm long. The 20 to 30 bright yellow flowers are 5 to 7.5 mm in diameter. The pods show slight raising over the seeds and are 6–12 cm by 1–3 mm wide. They are papery to thinly leathery, and sometimes minutely hairy. The seeds are longitudinal with the funicle folded 3 or 4 times.[4]

Acacia trinervata is endemic to New South Wales, and restricted to western Sydney and the lower Blue Mountains.[5]

The species was first described in 1825 by Franz Sieber,[1][2] and the specific epithet trinervata derives from the Latin for "three veined".[4]

"Acacia trinervata". Australian Plant Name Index, IBIS database. Centre for Plant Biodiversity Research, Australian Government.
Candolle, A.P. de in Candolle, A.P. de (ed.) (1825) Leguminosae. Prodromus Systematis Naturalis Regni Vegetabilis 2: 451. Retrieved 8 September 2019.
"Acacia trinervata Sieber ex DC. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2019-09-08.
"PlantNet:Acacia trinervata". Royal Botanic Garden Sydney. Retrieved 8 September 2019.
"Acacia trinervata". World Wide Wattle. Western Australian Herbarium. Retrieved 8 September 2019.

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