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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 hamiltoniana
Name

Acacia hamiltoniana Maiden, 1919
Synonyms

Acacia obtusata var. hamiltonii Maiden
Acacia sieberiana Tausch
Racosperma hamiltonianum (Maiden) Pedley

Distribution
Native distribution areas:
Acacia hamiltoniana

Continental: Australasia
Regional: Australia
New South Wales

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

Maiden, J.H. , 1919. Journal and proceedings of the Royal Society of New South Wales, liii. 199.

Links

Govaerts, R. et al. 2020. Acacia hamiltoniana in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 Aug 04. Reference page.
International Plant Names Index. 2019. Acacia hamiltoniana. Published online. Accessed: Aug 04 2019.
Tropicos.org 2019. Acacia hamiltoniana. Missouri Botanical Garden. Published online. Accessed: 04 Aug 2019.
Hassler, M. Aug. Acacia hamiltoniana. 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. Aug. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: Aug 04 {{{3}}}. Reference page.

Vernacular names
English: Hamilton's Wattle

Acacia hamiltoniana, commonly known as Hamilton's wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is native to parts of eastern Australia.

Description

The shrub typically grows to a height of up to 3 m (9.8 ft) and has a bushy habit with glabrous, finely ribbed, dark red branchlets. It has smooth, green phyllodes that are mostly ascending to erect. The variable phyllodes have a linear to linear-oblanceolate or narrowly elliptic shape with a length of 3 to 8 cm (1.2 to 3.1 in) and a width of 2 to 5 mm (0.079 to 0.197 in) and are narrowed at the base. It usually blooms between August and September[1] producing inflorescences with spherical flower-heads containing 9 to 15 subdensely packed golden flowers. The seed pods that form after flowering are black with a length of up to 5.5 cm (2.2 in) and a width of 1 cm (0.39 in). the pods contain shiny black seeds with an oblong to elliptic to ovate shape and a length of 4 to 5 mm (0.16 to 0.20 in).[2]
Taxonomy

The species was first formally described by the botanist Joseph Maiden in 1920 as part of the work Notes on Acacias with descriptions of new species as published in the Journal and Proceedings of the Royal Society of New South Wales. It was reclassified in 2003 as Racosperma hamiltonianum by Leslie Pedley then transferred back to genus Acacia in 2006.[3] The specific epithet honours Arthur Andrew Hamilton, who collected the type specimen from around Leura in 1907.[1]
Distribution

The shrub has a distribution in the Great Dividing Range and the associated foothills in western New South Wales from around Rylstone in the north down to around the Clyde River in the south where it is growing in sandy or loamy soils as a part of heath and Eucalyptus woodland communities.[2] It is often found on and around sandstone outcrops as a part of dry sclerophyll forest and heathland communities.[1]
See also

List of Acacia species

References

"Acacia hamiltoniana Maiden". PlantNet. Royal Botanic Garden, Sydney. Retrieved 3 July 2019.
"Acacia hamiltoniana". World Wide Wattle. Western Australian Herbarium. Retrieved 6 May 2019.
"Acacia hamiltoniana Maiden". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 3 July 2019.

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