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Species profile—Acacia pubicosta

Classification

Plantae (plants) → Equisetopsida (land plants) → MimosaceaeAcacia pubicosta

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Species details

Kingdom
Plantae (plants)
Class
Equisetopsida (land plants)
Family
Mimosaceae
Scientific name
Acacia pubicosta C.T.White
WildNet taxon ID
15742
Nature Conservation Act 1992 (NCA) status
Least concern
Back on Track (BoT) status
Low
Conservation significant
No
Confidential
No
Endemicity
Native
Pest status
Nil
Short Notes
BRI 008137, status annotated by author
Description
Acacia pubicosta is a shrub 1.5 to 3 m high. The branchlets are angular with an indumentum varying from dense silvery-white appressed hairs to almost glabrous with only patches of appressed hairs. The new shoots have densely appressed-puberulous hairs which are cream-coloured. The phyllodes are linear, 5 to 8.5 cm long and 2 to 3 mm wide, acute, subunciate, thin and maybe glabrous or commonly appressed-puberulous on the midribs, with a few hairs on the rest of the lamina. The midrib on the phyllodes is not prominent and the lateral nerves are inconspicuous. The gland is not prominent and is located 5 to 10 mm above the pulvinus (Pedley, 1979; Maslin, 2001).
The inflorescences are racemose, with the peduncle approximately 4 cm long with silvery white appressed-puberulous hairs. The inflorescence heads are globular with 15 to 20 flowers which are white or cream in colour. The immature seed pods are 10 cm long and 1 cm wide, thinly coriaceous, blackish in colour, and glabrous. The immature seeds are longitudinal, with a clavate aril (Pedley, 1979).
A. pubicosta and A. polifolia are closely related and both have some affinity with A. hamiltoniana. A. polifolia differs from A. pubicosta by having light, golden, appressed-pubescence on new shoots, raceme axes and commonly peduncles, and bright lemon yellow to golden coloured flower-heads (Pedley, 1979; Maslin, 2001).
Distribution
Acacia pubicosta is restricted to the Mt Walsh area, near Biggenden in south east Queensland (Queensland Herbarium, 2013).
Distributional limits
-25.5706353, 152.0188404
-25.6379739, 152.0898728
Range derivation
Range derived from extent of the taxon's verified records
Habitat
A. pubicosta is found on steep slopes in hilly terrain on stony and sandy soils. It occurs in woodlands, shrublands or heath often in rocky areas or pavements. Associated tree species include Eucalyptus acmenoides, Corymbia citriodora and E. crebra.).
Reproduction
Flowering has been recorded February- March and May-August. Fruiting has documented in October, November and February (Queensland Herbarium, 2013).
Threatening processes
The majority of A. pubicosta populations are protected within National Parks (Mt Walsh National Park The populations in the conservation estate are probably reasonably secure (Halford, 2011).
Possible threats listed by Barker (1996) are inappropriate fire and grazing regimes. Other threats included altered fire regimes, and the effects of introduced species (e.g. lantana) (Condamine Alliance NRM, 2009).
Status notes
Acacia pubicosta is listed as Near Threatened under Queensland's Nature Conservation Act 1992
Management documents
Barker (1996) Acacia pubicosta, Species Management Profile (in part)
Management recommendations
Barker (1996) lists the following management measures: the maintenance of appropriate fire regimes; and monitoring the impact of grazing (Barker, 1996).
Notes
Occurs in the following Queensland pastoral district: Wide Bay
The species has been recircumscribed (Queensland Herbarium 2013) to include only collections from Mt Walsh. Collections from Leichhardt and Port Curtis Districts previously referred to this species are Acacia polifolia.
Contributors: Lynise Wearne 28/06/2012; Gordon Guymer 6/05/2013.
References
Barker, M. (1996). Acacia pubicosta Species Management Profile, Department of Natural Resources, Queensland (in part).
Condamine Alliance NRM (2009). http://www.environment.nsw.gov.au/resources/pestsweeds/CondamineAllianceNRM.
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 (in part).
Maslin, B.R. (1999). Acacia pubicosta. Flora of Australia Online. Australian Biological Resources Study, Canberra. Accessed 21/06/2012. http://www.environment.gov.au/biodiversity/abrs/online-resources/flora/main/index.html.
Pedley, L. (1979). A revision of Acacia Mill. In Queensland. Austrobaileya 1 (3): 284.
Queensland Herbarium (2013). Specimen label information. Queensland Herbarium. Accessed 6/05/2013.
Profile author
Gordon Guymer (06/05/2013)

Other resources

The Australasian Virtual Herbarium (AVH)
Atlas of Living Australia

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
https://apps.des.qld.gov.au/species/?op=getspeciesbyid&taxonid=15742

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

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Licence
Creative Commons Attribution 4.0 International (CC BY 4.0)
Last updated
7 September 2021
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