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Acacia argyrophylla

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 argyrophylla

Acacia argyrophylla Hook., 1848

Acacia bombycina Benth. ex Paxton
Acacia brachybotrya var. argyrophylla (Hook.) Maiden
Racosperma argyrophyllum (Hook.) Pedley

Native distribution areas:
Acacia argyrophylla

Continental: Australasia
Regional: Australia
South Australia, Victoria

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

Hooker, W.J. 1848. Curtis’s botanical magazine, comprising the plants of the Royal Gardens of Kew, and of other botanical establishments in Great Britain; with suitable descriptions. Vol. LXXIV [= Vol. IV of the third series.] 51 pp. 4345–4416 pl. Lovell Reeve, London. BHL Reference page. : 74: t. 4384.


Govaerts, R. et al. 2020. Acacia argyrophylla 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 25. Reference page. }}:
International Plant Names Index. 2019. Acacia argyrophylla. Published online. Accessed: Jul 25 2019. 2019. Acacia argyrophylla. Missouri Botanical Garden. Published on the internet. Accessed: 2019 Jul 25.
Hassler, M. Jul. Acacia argyrophylla. 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 25 {{{3}}}. Reference page.
USDA, ARS, Germplasm Resources Information Network. Acacia argyrophylla in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service.

Vernacular names
English: Silver Mulga

Acacia argyrophylla, known colloquially as silver mulga, is a species of Acacia native to South Australia.[1]


The erect, compact, dense and spreading shrub[2] typically grows to a height and width of 2 to 3 m (6 ft 7 in to 9 ft 10 in). The branchlets have bright greenish yellow hairs with white hairs on the penultimate branchlets. It has oblanceolate shaped silvery blue-grey phyllodes with a length of 2.5 to 5 cm (0.98 to 1.97 in) and a width of 6 to 15 mm (0.24 to 0.59 in). The shrub produces racemose inflorescences that have a 4 to 10 mm (0.16 to 0.39 in) axis covered in dense, appressed, greenish golden hairs containing 25 to 45 flowers per head .[1] After flowering dark brown seed pods that are linear with a length of 10 cm (3.9 in) and a width of around 15 mm (0.59 in). The pods are often rough and warty and raised over the seeds. The black, elliptical to ovoid shaped seeds within the pods have a length of around 7 mm (0.28 in) and a width of 4.5 mm (0.18 in).[2]

The species was first formally described by the botanist William Jackson Hooker in 1848 as part of the work Botanical Magazine. The species was reclassified as Racosperma argyrophyllum by Leslie Pedley in 2003 and returned to the genus Acacia in 2006. The other synonyms are Acacia bombycina and Acacia brachybotrya var. argyrophylla.[3] The specific epithet is taken from the ancient Greek words argyros (ἄργυρος) meaning silver and phyllon (φύλλον) meaning leaf,[4][5] in reference to the silvery coloured foliage.[2]

It is found only in South Australia from around Hawker in the Flinders Ranges in the north, extending south to around Monarto. Other populations are found on the Yorke Peninsula and around Onkaparinga Gorge. It often situated on slopes and low hills as part of open woodland and mallee communities.[1]
See also

List of Acacia species


"Acacia argyrophylla". World Wide Wattle. Western Australian Herbarium. Retrieved 25 March 2019.
"Acacia argyrophylla (Leguminosae) Silver Mulga". Seeds of South Australia. Government of South Australia. Retrieved 25 March 2019.
"Acacia argyrophylla Hook". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 25 March 2019.
Backer, C.A. (1936). Verklarend woordenboek der wetenschappelijke namen van de in Nederland en Nederlandsch-Indië in het wild groeiende en in tuinen en parken gekweekte varens en hoogere planten (Edition Nicoline van der Sijs).
Stearn, W.T. (2004). Botanical Latin (4th ed). Portland, Oregon: Timber Press. pp. 375, 466. ISBN 9780715316436.

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