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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 pruinosa

Acacia pruinosa A.Cunn. ex Benth.

London Journal of Botany. London 1:383. 1842
USDA, ARS, Germplasm Resources Information Network. Acacia pruinosa in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Acacia pruinosa, commonly known as the frosty wattle, is a species of Acacia native to eastern Australia.[1]


The spreading shrub or tree typically grows to a height of 1 to 6 metres (3 to 20 ft) and has smooth bark with terete branchlets. The glabrous leaves are 2 to 6.5 cm (0.79 to 2.56 in) in length and have one prominent gland near the middle of the lowermost pair of pinnae. There are between one and five pairs of pinnae that have a length of 3 to 9 cm (1.2 to 3.5 in) and 7 to 20 pairs of oblong pinnules that are 8 to 17 mm (0.31 to 0.67 in) in length and 2.5 to 5 mm (0.098 to 0.197 in) wide. The plant flowers between August and October producing 4 to 19 inflorescences in panicles that have an axis with a length of 2 to 15 cm (0.79 to 5.91 in). The spherical flower-heads with a diameter of 5 to 10 mm (0.20 to 0.39 in) contain 40 to 60 yellow to bright yellow flowers. After flowering leathery straight to curved, flat seed pods form with a length of 4 to 14 cm (1.6 to 5.5 in) and a width of 6 to 12 mm (0.24 to 0.47 in).[1]

The type specimen was collected by the botanist Alan Cunningham in 1827 on the Liverpool Plains of New South Wales.[2]

It is found in north eastern New South Wales from around Uralla in the south stretching north into south-eastern Queensland. It is often a part of dry sclerophyll forest and woodland communities and grows in sandy and skeletal soils over and around granite.[1]
See also

List of Acacia species


P.G.Kodela (2006). "Acacia pruinosa A.Cunn. ex Benth". Plantnet - New South Wales Flora Online. Royal Botanic Gardens, Sydney. Retrieved 5 September 2016.
Warren and Gloria Sheather (2017). "Acacia pruinosa Frosty Wattle". The Australian Plants Society - NSW. Retrieved 17 March 2019.

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