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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 insolita
Subspecies: A. i. subsp. insolita – - A. insolita subsp. recurva

Acacia insolita E.Pritz., 1904
Native distribution areas:
Acacia insolita

Continental: Australasia
Regional: Australia
Western Australia

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

Pritzel, E.G.. 1904. Bot. Jahrb. Syst. 35(2-3): 310.

Additional references

Govaerts, R.H.A. 1995. World Checklist of Seed Plants 1(1, 2). 483, 529 pp. MIM, Deurne. ISBN 90-341-0852-X (issue 1) ISBN 90-341-0853-8 (issue 2). Reference page.


Govaerts, R. et al. 2021. Acacia insolita in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2021 Oct 14. Reference page.
International Plant Names Index. 2021. Acacia insolita. Published online. Accessed: Oct 14 2021. 2021. Acacia insolita. Missouri Botanical Garden. Published online. Accessed: 14 Oct 2021.
Hassler, M. 2021. Acacia insolita. 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. 2021. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2021 Oct 14. Reference page.

Vernacular names

Acacia insolita is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.


The shrub typically grows to a height of 0.1 to 1.2 metres (0.3 to 3.9 ft) and has glabrous or hairy stems and foliage. The stems have 1 to 4 mm (0.039 to 0.157 in) long stipules. The leaves have a bipinnate form and are usually persistent on mature plants. Each pinnae normally contain one pair with 2 to 12 pinnules. Each green pinnule has a lanceolate to narrowly oblong or elliptic shape and a length of 5 to 10 mm (0.20 to 0.39 in) and a width 1 to 3 mm (0.039 to 0.118 in). The narrowly linear, flat or quadrangular phyllodes have a length of 1 to 15 cm (0.39 to 5.91 in) and a width of 0.5 to 4 mm (0.020 to 0.157 in).[1] It produces yellow-cream flowers from June to September.[2] The simple inflorescences occur singly in the axils. The spherical flower-heads contain 12 to 19 cream to golden coloured flowers. After flowering linear to narrowly oblong seed pods form with a length of around 8 cm (3.1 in) and a width of 4 to 7 mm (0.16 to 0.28 in). the glossy black to dark brown seeds within the pods are around 3 to 4 mm (0.12 to 0.16 in) in length.[1]

There are three recognised subspecies:

Acacia insolita subsp. efoliolata
Acacia insolita subsp. insolita
Acacia insolita subsp. recurva


It is native to an area in the South West region of Western Australia where it is found on hills and ridges growing in gravelly sandy soils often containing laterite.[2] The plant along the Darling Range from around Marradong in the north to Nannup in the south.[1]
See also

List of Acacia species


"Acacia insolita". World Wide Wattle. Western Australian Herbarium. Retrieved 11 May 2019.
"Acacia insolita". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.

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