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Acacia glaucoptera

Acacia glaucoptera (Photo: *)

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 glaucoptera

Acacia glaucoptera Benth., 1855

Acacia bossiaeoides Seem.
Acacia sinuata Jacques
Racosperma glaucopterum (Benth.) Pedley

Native distribution areas:
Acacia glaucoptera

Continental: Australasia
Regional: Australia
Western Australia

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

Acacia glaucoptera, commonly known as flat wattle[1] or clay wattle,[1] is a species of Acacia which is endemic to the south-west of Western Australia.[2]


It is a spreading or erect shrub which ranges in height from 0.3 to 1.2 metres (1.0 to 3.9 ft) and up to 2 m (6.6 ft) in width. It produces yellow, globular flowers between late winter and early summer.[2] It has glabrous straight to slightly flexuose branchlets. Phyllodes are continuous with the branchlets, forming opposite wings with each one extending to the one underneath. Each one is mostly 2.5 to 7 centimetres (1.0 to 2.8 in) in length and 0.6 to 2 cm (0.2 to 0.8 in) wide. The free portion of phyllode usually 1 to 4 cm (0.4 to 1.6 in). The rudimentary inflorescences rudimentary with a globular flower heads that have a diameter of 5 to 6 mm (0.2 to 0.2 in) containing 30 to 80 golden flowers. After flowering black, glabrous, twisted and coiled seed pods are formed that are up to 2 cm (0.8 in) long and 2 to 3 mm (0.1 to 0.1 in) wide. The seeds are longitudinally arranged in the pods. They are oblong in shape with a length of 2.5 to 3.5 mm (0.1 to 0.1 in).[3]

The species was first formally described by the botanist George Bentham in 1855 as part of the work Plantae Muellerianae: Mimoseae published in Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde.[4][5]

It was reclassified as Racosperma glaucopterum by Leslie Pedley in 2003 only to be placed back in the genus Acacia in 2006.[4] Other synonyms include Acacia bossiaeoides and Acacia sinuata]].[4]

A. glaucoptera closely resembles Acacia pterocaulon but is closely related to Acacia bifaria, Acacia excentrica and Acacia merrallii even though these species lack the winged branches.[3]

The shrub is found over a large area through the Great Southern, southern Wheatbelt and southern Goldfields-Esperance regions. It is found from Arthur River in the west and north to Esperance in the east and south to the coast. It grows in gravelly clay lateritic soils.[2] The plant is often part of woodland, tall shrubland and mallee communities.[3]

This species is often grown for its unusual "foliage" (its "leaves" are actually cladodes). It requires good drainage and occasional pruning to remove dead wood. It will withstand temperatures down to -7 °C.[6]
See also

List of Acacia species


"Acacia glaucoptera". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
"Acacia glaucoptera". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"Acacia glaucoptera". World Wide Wattle. Western Australian Herbarium. Retrieved 23 August 2018.
"Acacia glaucoptera Benth". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 23 August 2018.
Bentham, G. (1855). "Plantae Muellerianae: Mimoseae". Linnaea: Ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde. 26: 604.
"Acacia glaucoptera". Australian National Botanic Gardens. Retrieved 23 August 2018.

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