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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 caerulescens

Acacia caerulescens Maslin & Court, 1989

Racosperma caerulescens (Maslin & Court) Pedley

Native distribution areas:
Acacia caerulescens

Continental: Australasia
Regional: Australia

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

Maslin, B.R. & Court, A.B., 1989. Muelleria 7(1): 131.


Govaerts, R. et al. 2020. Acacia caerulescens 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 27. Reference page.
International Plant Names Index. 2019. Acacia caerulescens. Published online. Accessed: Jul 27 2019. 2019. Acacia caerulescens. Missouri Botanical Garden. Published on the internet. Accessed: 2019 Jul 27.
Hassler, M. Jul. Acacia caerulescens. 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 27 {{{3}}}. Reference page.

Vernacular names
English: Buchan Blue, Buchan Blue Wattle

Acacia caerulescens, commonly known as limestone blue wattle, Buchan blue or Buchan blue wattle is a tree species that is endemic to south eastern Australia


The tree grows to between 10 to 15 m (33 to 49 ft) in height and has a pyramidal habit with glabrous branchlets that have a fine white powdery coating. Like most species of Acacia it has phyllodes rather than true leaves. The evergreen phyllodes have an obovate to oblanceolate or sometimes narrowly elliptic shape with a length of 4 to 8 cm (1.6 to 3.1 in) and a width of 1.5 to 3 mm (0.059 to 0.118 in). The lemon yellow globular flowerheads appear in racemes from November to December in the species' native range, followed by seed pods that are 5 to 12 cm long and 1.4 to 2.2 cm wide.[3]

The species was formally described in 1989 based on plant material collected near Buchan in Gippsland.[3][4]

It has a limited distribution in Victoria where it is only found in the Lakes Entrance and Buchan areas. It is found as remnant populations mostly in clay soils over limestone as a part of Eucalyptus woodland communities. Its natural habitat is under threat of land clearing.[3]
See also

List of Acacia species


Department of Sustainability, Environment, Water, Population and Communities. "Acacia caerulescens — Limestone Blue Wattle, Buchan Blue, Buchan Blue Wattle". Species Profile and Threats Database. Canberra, Australian Capital Territory: Commonwealth of Australia. Retrieved 28 January 2013.
"Acacia caerulescens ". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 28 January 2013.
"Acacia caerulescens ". Flora of Australia Online. Department of the Environment and Heritage, Australian Government.
Carter, Oberon; Walsh, Neville (November 2006). "National Recovery Plan for Limestone Blue Wattle - Acacia caerulescens" (PDF). State of Victoria Department of Sustainability and Environment. Archived from the original (PDF) on 22 March 2012. Retrieved 28 January 2013.

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