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Species profile—Acacia sp. (Castletower N.Gibson TOI345)


Plantae (plants) → Equisetopsida (land plants) → LeguminosaeAcacia sp. (Castletower N.Gibson TOI345)

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Species details

Plantae (plants)
Equisetopsida (land plants)
Scientific name
Acacia sp. (Castletower N.Gibson TOI345)
WildNet taxon ID
Nature Conservation Act 1992 (NCA) status
Conservation significant
Pest status
Short Notes
Acacia castellana manuscript name
Acacia sp. (Castletower N.Gibson TOI345) is a tree growing to 6 m tall. The bark is rough, fissured and grey in colour. The branchlets are green, sharply angular, tomentose, becoming glabrous and sometimes slightly scurfy. The phyllodes are dull green, very narrowly elliptic, falcate, 16 to 20 cm long and 8 to 12 mm wide. There are 3 prominent longitudinal veins (lower 2 confluent with each other near the base) and minor nerves 1 or 2 per mm which are anastomosing. There is 1 basal gland located 2 to 4 mm above the pulvinus. The pulvinus is reddish in colour and 6 to 8 mm long. The inflorescences occur as cylindrical spikes, with 2 or 3 in the axis. The pods are flattened, linear, slightly constricted between the seeds and are 6 to 7.5 cm long and 8 to 10 mm wide (Halford, 2011).
Acacia sp. (Castletower N.Gibson TOI345) is related to A. julifera. Acacia julifera differs by having 3 or rarely 5 more prominent veins than the rest, which are neither confluent with each other nor with margin at the base. The minor veins are non-anastomosing and 6 to 9 per mm. The inflorescence spikes in A. julifera are arranged in short racemes and the pods are terete or slightly flattened and 2 to 5 mm wide (Halford, 2011).
Endemic to Queensland and restricted to near Mt Castletower, SE of Calliope. The species is known from a single population (Queensland Herbarium, 2011).
Distributional limits
-24.1291666, 151.3275
-24.1291667, 151.3275
Range derivation
Range derived from extent of the taxon's verified records
The habitat is poorly known. The only reports describe the species as growing in riverine community at 45 m altitude (Halford, 2011).
Green unripe fruit and remains of flower spikes have been documented in October (Queensland Herbarium, 2011).
Threatening processes
The species occurs in an area of remnant vegetation, as defined under the Queensland Vegetation Management Act 1999, and is currently protected from broad scale clearing. However, chance stochastic events may reduce the population or eliminate it. There are no data to confirm that fire has had a direct or indirect impact on Acacia sp. (Castletower N.Gibson TOI3450). However, frequent cool burns have been shown to be detrimental to some Acacias and annual cool burns to promote grass for grazing have been a common management practice (House, 1995, Taylor, 1989). An inappropriate fire regime is a potential threat (Halford, 2011).
Status notes
Acacia sp. (Castletower N.Gibson TOI345) is listed as Near Threatened under Queensland's Nature Conservation Act 1992
Management recommendations
The species is poorly known, and it is recommended that field surveys are required to precisely determine the number of individuals and area of occupancy of the currently known population and search for more populations (DERM, 2010; Halford, 2011).
Occurs in the following Queensland pastoral district: Port Curtis (Queensland Herbarium 2011).
Halford, D. (2011). Species nomination form and guidelines for adding or changing the category of a native species listing under the Queensland Nature Conservation Act 1992 (NCA). Rare and Threatened Species Technical Committee March 2011.
House, A. (1995). Fire ecology research in Queensland native forest - current status and new directions. In: 6th Queensland Fire Research Workshop, Darling Downs Institute of Advanced Education, Toowoomba.
Queensland Department of Environment and Resource Management (DERM) (2010). Fitzroy Natural Resource Management Region Back on Track Actions for Biodiversity. Department of Environment and Resource Management, Brisbane.
Queensland Herbarium (2011). Specimen label information. Queensland Herbarium. Accessed 4/11/2011.
Taylor, M.T. (1989). Fire in subtropical forest management. In 4th Queensland Fire Research Workshop, Darling Downs Institute of advanced Education, Toowoomba.
Profile author
Lynise Wearne (10/07/2012)

Other resources

Data source

This profile data is sourced from the QLD Wildlife Data API using the Get species by ID function used under CC-By 4.0.

This information is sourced from the WildNet database managed by the Queensland Department of Environment and Science.

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Last updated
8 March 2022