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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 bynoeana

Acacia bynoeana Benth., 1855

Racosperma bynoeanum (Benth.) Pedley

Native distribution areas:
Acacia bynoeana

Continental: Australasia
Regional: Australia
New South Wales

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

Bentham, G., 1855. Linnaea; Ein Journal für die Botanik in ihrem ganzen Umfange. Berlin 26:614.


Govaerts, R. et al. 2020. Acacia bynoeana 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 27. Reference page.
International Plant Names Index. 2019. Acacia bynoeana. Published online. Accessed: Jul 27 2019. 2019. Acacia bynoeana. Missouri Botanical Garden. Published on the internet. Accessed: 2019 Jul 27.
Hassler, M. Jul. Acacia bynoeana. 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 27 {{{3}}}. Reference page.
USDA, ARS, Germplasm Resources Information Network. Acacia bynoeana in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names
English: Bynoe's Wattle, Tiny Wattle

Acacia bynoeana, known colloquially as Bynoe's wattle or tiny wattle, is a species of Acacia native to eastern Australia.[4] It is listed as endangered in New South Wales and as vulnerable according to the Environment Protection and Biodiversity Conservation Act 1999.[5]


The small shrub grows to a height of around 0.5 m (1 ft 8 in) and has a decumbent habit. The terete and hairy branchlets have subulate stipules with a length of around 1.5 mm (0.059 in). Like most Acacias it has phyllodes rather than true leaves. The narrowly elliptic to linear shaped phyllodes are straight to slightly curved. They have a length of 1 to 6 cm (0.39 to 2.36 in) and a width of 1 to 3 mm (0.039 to 0.118 in) and are hairy when young but become glabrous with age. The shrub usually blooms in the summertime between December and March producing simple inflorescences that occur singly in the axils with spherical flower-heads that have a diameter of 3 to 4 mm (0.12 to 0.16 in) containing 10 to 25 bright golden flowers. After flowering firmly, papery and brittle seed pods will form that are straight, and raised over the seeds inside. The pods are 1 to 3 cm (0.39 to 1.18 in) in length and 3 to 4 mm (0.12 to 0.16 in) wide.[4]

The plant was first formally described by the botanist George Bentham in 1855 as part of the work Plantae Muellerianae: Mimoseae as published in Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde. It was reclassified as Racosperma bynoeanum by Leslie Pedley in 2003 then transferred back to genus Acacia in 2006. The only other synonym is Acacia pumila.[6]

The specific epithet honours Benjamin Bynoe, the Royal Navy surgeon aboard the Beagle who collected the type specimen.[4]

The shrub is found in New South Wales mostly from around the Morisett area in the north down to Berrima and the Illawarra region and out to the west as far as the Blue Mountains with another population found in the Hunter Valley and Morton National Park. It grows well in sandy soils as a part of heathland and dry sclerophyll forest communities.[4]
See also

List of Acacia species


Acacia bynoeana, Species Profile and Threats Database, Department of the Environment and Heritage, Australia.. Retrieved 16 November 2018.
"Acacia bynoeana". Australian Plant Name Index, IBIS database. Centre for Plant Biodiversity Research, Australian Government. Retrieved 29 July 2019.
Bentham, G. (1855) Plantae Muellerianae: Mimoseae. Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde 26(5): 614
Harden GJ (1990). "Acacia bynoeana Benth". Plantnet - New South Wales Flora Online. Royal Botanic Gardens, Sydney. Retrieved 17 July 2014.
"Bynoe's Wattle - profile". New South Wales Office of Environment and Heritage. 1 December 2017. Retrieved 24 August 2019.
"Acacia bynoeana Benth". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 24 August 2019.

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