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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 elongata
Name

Acacia elongata Sieber ex DC., 1825
Synonyms

Acacia elongata var. dilatata Maiden & Blakely
Acacia elongata var. hebecephala Benth.
Acacia hebecephala A.Cunn. ex G.Don
Racosperma elongatum (Sieber ex DC.) Pedley

Distribution
Native distribution areas:
Acacia elongata

Continental: Australasia
Regional: Australia
New South Wales
Introduced into:
Dominican Republic

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

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

Links

Govaerts, R. et al. 2020. Acacia elongata in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 Aug 02. Reference page.
International Plant Names Index. 2019. Acacia elongata. Published online. Accessed: Aug 02 2019.
Tropicos.org 2019. Acacia elongata. Missouri Botanical Garden. Published online. Accessed: 02 Aug 2019.
Hassler, M. Aug. Acacia elongata. 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 02 {{{3}}}. Reference page.
USDA, ARS, Germplasm Resources Information Network. Acacia elongata in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names
English: Slender Wattle, Swamp Wattle

Acacia elongata, also known as swamp wattle[1][2] or slender wattle,[3][2] is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to coastal areas of eastern Australia.

Description

The shrub or small tree typically grows to a height of around 1 to 7 m (3 ft 3 in to 23 ft 0 in) and has an upright and open habit with hairy, yellow-ribbed angular branchlets. Like most species of Acacia it has phyllodes rather than true leaves. The glabrous, thinly coriaceous and evergreen phyllodes have a narrowly linear or occasionally linear-oblanceolate shape are usually mostly incurved. The phyllodes are 4 to 17 cm (1.6 to 6.7 in) in length and 1 to 7 mm (0.039 to 0.276 in) wide and have three raised distant nerves.[3] It blooms between July and October producing inflorescences that appear in groups of one to three, or sometimes as many as seven, on an axillary axis that is 1 to 15 mm (0.039 to 0.591 in) in length. Sometimes these will appear in the axils of the phyllodes. The spherical flower-heads have a diameter of 5 to 10 mm (0.20 to 0.39 in) and contain between 20 and 40 lemon yellow to bright yellow coloured flowers.[1] Following flowering it produces straight, thinly leathery to firmly papery, brittle seed pods that are flat but are raised over each of the seeds. The pods are 3 to 11.5 cm (1.2 to 4.5 in) in length and 3 to 5 mm (0.12 to 0.20 in) wide with sparsely distributed hairs.[1]
Taxonomy

The species was first formally described by the botanist Augustin Pyramus de Candolle in 1825 as a part of the work Leguminosae. Prodromus Systematis Naturalis Regni Vegetabilis. It was reclassified by Leslie Pedley in 2003 as Racosperma elongatum then transferred back to genus Acacia in 2006.[4] The type specimen was collected by Franz Sieber in 1823. It is closely related to Acacia ptychoclada and superficially resembles Acacia trinervata, Acacia dawsonii and Acacia viscidula.[2] The specific epithet is taken from the Latin word elongatus meaning lengthened in reference to the long, narrow phyllodes.[5]
Distribution

It is found down the east coast of Australia from around Kingscliff in the north of New South Wales down to around Eden in the south and inland to around Wagga Wagga in the west. Its range also extends into the eastern highlands region of Victoria although it has become naturalized in a few other localities in Victoria.[3] It is usually situated along watercourses and swamps[2] growing in sandy soils as a part of Eucalyptus or heathland communities.[1]
Cultivation

Although it is not a widely cultivated species smaller forms are sometime found in gardens. They grow quickly and flower within one or two years from seed. It is able to grow in a range of soils so long as they are reasonably moist and will manage in either full sun or dappled shade. It can be propagated by seed but requires pretreatment scarification or by soaking in boiling water.[5] The shrub is suitable for poorly drained areas, will tolerate light frosts and salt spray.[6]
See also

List of Acacia species

References

"Acacia elongata Sieber ex DC". PlantNet. Royal Botanic Garden, Sydney. Retrieved 1 October 2020.
"Acacia elongata Sieber ex DC., Prodr. 2: 451 (1825)". World Wide Wattle. Western Australian Herbarium. Retrieved 1 October 2020.
"Acacia elongata Sieber ex DC". Wattle - Acacias of Australia. Lucid Central. Retrieved 30 September 2020.
"Acacia elongata Sieber ex DC". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 1 October 2020.
"Acacia elongata". Australian Native Plant Society. Retrieved 1 October 2020.
"Acacia elongata Swamp Wattle". Wattle - genus Acacia. Australian National Botanic Gardens. Retrieved 1 October 2020.

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