Species Profile and Threats Database

For information to assist proponents in referral, environmental assessments and compliance issues, refer to the Policy Statements and Guidelines (where available), the Conservation Advice (where available) or the Listing Advice (where available).
In addition, proponents and land managers should refer to the Recovery Plan (where available) or the Conservation Advice (where available) for recovery, mitigation and conservation information.

EPBC Act Listing Status Listed as Vulnerable
Listing and Conservation Advices Commonwealth Conservation Advice on Acacia aphylla (Leafless Rock Wattle) (Threatened Species Scientific Committee, 2008gg) [Conservation Advice].
Recovery Plan Decision Recovery Plan not required, included on the Not Commenced List (1/11/2009).
Adopted/Made Recovery Plans
Federal Register of
    Legislative Instruments
Declaration under s178, s181, and s183 of the Environment Protection and Biodiversity Conservation Act 1999 - List of threatened species, List of threatened ecological communities and List of threatening processes (Commonwealth of Australia, 2000) [Legislative Instrument].
State Government
    Documents and Websites
WA:Threatened flora of the Western Central Wheatbelt (Collins, J., 2009) [State Species Management Plan].
State Listing Status
WA: Listed as Vulnerable (Wildlife Conservation Act 1950 (Western Australia): September 2013 list)
Scientific name Acacia aphylla [13553]
Family Fabaceae:Fabales:Magnoliopsida:Magnoliophyta:Plantae
Species author Maslin
Infraspecies author  
Reference Nuytsia 1 (23 May 1974) 320, figs. 3, 4B, 9.
Distribution map Species Distribution Map

This is an indicative distribution map of the present distribution of the species based on best available knowledge. See map caveat for more information.

Other illustrations Google Images

The Leafless Rock Wattle is a leafless, erect, widely branching shrub to 2.3 m high with golden yellow spherical flower heads (Kelly et al. 199o; Brown et al. 1998; Orchard & Wilson 2001).

This species is restricted to two areas about 60 km apart, in the Darling Range E of Perth and in the Northam area, SW WA (Brown et al. 1998). It occurs at two general localities: the Hidden Valley area in the Helena R. valley, several kilometres downstream from Mundaring Weir; and Spencers Brook, S of Northam (Court 1978; Leigh et al. 1984; Brown et al. 1998). It is found in Clackline and Mokine NRs, both containing less than 1000 plants (Briggs & Leigh 1996).

This species is largely associated with laterite and granite outcrops on hillsides (Kelly et al 1990; Atkins 1998; Brown et al. 1998; Orchard & Wilson 2001). Individuals may grow in rock crevices (Kelly et al 1990; Brown et al. 1998; Orchard & Wilson 2001). Soils may be sand, loam, clay or gravel; brown or yellow in colour (Atkins 1998; Paczkowska & Chapman 2000).

It grows in open forest dominated by Eucalyptus marginata and E. calophylla, or woodland dominated by E. loxophleba (Leigh et al. 1984; Kelly et al 1990). Associated understorey species include Grevillea endlicheriana, Hakea petiolaris and Xanthorrhoea preissii (Leigh et al. 1984).

Flower are borne July-Oct. (Simmons 1988). Pods mature Dec.-Mar. (Kelly et al 1990) and mature pods have been collected in May and Oct. (Atkins 1998).

Few seedlings have been observed in most populations, despite high annual seed production (Brown et al. 1998). Plants are killed by fire but populations will regenerate from a soil seedbank (Kelly et al 1990). In Mokine NR, the species regenerated well from seed following an autumn fire under dry soil conditions (Atkins 1998).

The following table lists known and perceived threats to this species. Threats are based on the International Union for Conservation of Nature and Natural Resources (IUCN) threat classification version 1.1.

Threat Class Threatening Species References
Climate Change and Severe Weather:Droughts:Drought Acacia aphylla in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage (DEH), 2006u) [Internet].
Ecosystem/Community Stresses:Indirect Ecosystem Effects:Restricted geographical distribution (area of occupancy and extent of occurrence) Acacia aphylla in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage (DEH), 2006u) [Internet].
Protected status:Protected status:Lack of secure conservation land tenure Acacia aphylla in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage (DEH), 2006u) [Internet].
Species Stresses:Indirect Species Effects:Poor recruitment (regeneration) and declining population numbers Acacia aphylla in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage (DEH), 2006u) [Internet].

Atkins, K.J. (1998). Conservation Statements for threatened flora within the regional forest agreement region for Western Australia. Page(s) 1-95. Western Australia: Department of Conservation and Land Management.

Briggs, J.D. & J.H. Leigh (1996). Rare or Threatened Australian Plants - Revised Edition. Collingwood: CSIRO Publishing.

Brown, A., C. Thomson-Dans & N. Marchant, eds. (1998). Western Australia's Threatened Flora. Como, Western Australia: Department of Conservation and Land Management.

Court, A.B. (1978). Three new species of Acacia (Mimosaceae) from Western Australia. Nuytsia. 2(4):168-177.

Ecologia (1998). Northam Camp & Rifle Range Flora Survey.

Kelly, A.E., D.J. Coates, I. Hereford, S.D. Hopper, M. O'Donoghue & L. Robson (1990). Declared Rare Flora and Other Plants in need of Special Protection in the Northern Forest Region. Perth: Department of Conservation & Land Management.

Leigh, J., R. Boden & J. Briggs (1984). Extinct and Endangered Plants of Australia. Melbourne, Victoria: Macmillan.

Meredith, L.D. & M.M. Richardson (1990). Rare or Threatened Australian Plant Species in Cultivation in Australia. Report Series No. 15. Page(s) 1-114. Canberra: Australian National Parks and Wildlife Service.

Orchard, A.E. & A.J.G. Wilson (eds) (2001). Flora of Australia, Volume 11A, Mimosaceae, Acacia Part 1.

Paczkowska, G. & A.R. Chapman (2000). The Western Australian Flora, A Descriptive Catalogue. The Wildflower Society of Western Australia (Inc.), the Western Australian Herbarium, Department of Conservation and Land Management and the Botanic Gardens & Parks Authority.

Simmons, M (1988). Acacias of Australia. Ringwood, Vic., Viking O'Neil Penguin Books Aust.

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This database is designed to provide statutory, biological and ecological information on species and ecological communities, migratory species, marine species, and species and species products subject to international trade and commercial use protected under the Environment Protection and Biodiversity Conservation Act 1999 (the EPBC Act). It has been compiled from a range of sources including listing advice, recovery plans, published literature and individual experts. While reasonable efforts have been made to ensure the accuracy of the information, no guarantee is given, nor responsibility taken, by the Commonwealth for its accuracy, currency or completeness. The Commonwealth does not accept any responsibility for any loss or damage that may be occasioned directly or indirectly through the use of, or reliance on, the information contained in this database. The information contained in this database does not necessarily represent the views of the Commonwealth. This database is not intended to be a complete source of information on the matters it deals with. Individuals and organisations should consider all the available information, including that available from other sources, in deciding whether there is a need to make a referral or apply for a permit or exemption under the EPBC Act.

Citation: Department of the Environment (2014). Acacia aphylla in Species Profile and Threats Database, Department of the Environment, Canberra. Available from: Accessed Wed, 3 Sep 2014 00:00:01 +1000.