Indicative distribution
The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas.
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click here to see geographic restrictions).
The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Acacia prominens - endangered population
Gazetted date:
29 Sep 1998
Profile last updated:
15 Dec 2022
Description
An erect or spreading tree, 4 - 18 m high. Phyllodes (leaves) straight or almost sickle-shaped, 3 - 5 cm long, 8 - 12 mm wide, midvein prominent, lateral veins conspicuous, apex acute to obtuse with a point; 1 gland along margin; pulvinus (swelling at base of petiole) < 2 mm long. Heads 8 - 15-flowered, pale yellow to white or golden yellow, 10 - 25 on an extended axillary inflorescence. Pod papery or leathery, 5 - 8 cm long, 10 - 20 mm wide, usually light brown.
Distribution
Occurs at a few sites along the railway line at Penshurst, at Carss Bush Park, Carss Park and there is an unconfirmed siting at Oatley Park, Oatley. This population is disjunct from other populations (Hunter Valley to Gosford region) and at the southern limit of the range of the species.
Habitat and ecology
- Grows in open situations on clayey or sandy soils.
- Flowers from July to September and pods are produced in September-October.
- Pollination of Acacia flowers is usually by insects and birds.
- Acacia species generally have high seed dormancy and long-lived persistent soil seedbanks. Seeds are bird and/or ant dispersed.
Regional distribution and habitat
Click on a region below to view detailed distribution, habitat and vegetation information.
Threats
- Habitat loss.
- Small population size and habitat fragmentation placing the population at risk of inbreeding.
- Lack of knowledge of the endangered population’s current distribution.
- Isolation and fragmentation of habitat.
- Damage during site maintenance activities (including from the use of herbicides).
- Competition from weeds.
Recovery strategies
A Saving Our Species conservation project is currently being developed for this species and will be available soon. For information on how you can contribute to this species' recovery, see the Activities to assist this species section below.
Activities to assist this species
- Ongoing training is needed for railway maintenance staff about potential impacts of their activities.
- Control Weeds.
- Protect habitat from clearing and disturbance.
- Genetic studies which examine the relationship between this population and other Acacia prominens at Gosford would be useful so that the conservation significance of this population could be determined.
- Further surveys are required and the siting at Oatley Park should be confirmed.
Information sources
- Auld, T.D. (1996) Ecology of the Fabaceae in the Sydney region: fire, ants and the soil seedbank. Cunninghamia 4(4): 531-552
- Kodela, P.G. and Harden, G.J. (2002) Acacia. Pp 381-476 in Harden, G.J. (ed.) Flora of New South Wales. Volume 2. Revised Edition (New South Wales University Press, Sydney)
- NSW Scientific Committee (1998) Acacia prominens (Gosford wattle) population, Hurstville and Kogarah LGAs - Endangered population determination - final.
- Tame, T. (1992) Acacias of South East Australia. (Kangaroo Press, Kenthurst)
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IBRA Bioregion
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IBRA Subregion
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Known or predicted
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Geographic restrictions region
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| Sydney Basin | Cumberland |
Known
| LGAs listed in the Determination (inclusive of Georges River LGA) |
| Sydney Basin | Pittwater |
Predicted
| LGAs listed in the Determination (inclusive of Georges River LGA) |
| Sydney Basin | Sydney Cataract |
Known
| LGAs listed in the Determination (inclusive of Georges River LGA) |