Biodiversity

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 Endangered
Recovery Plan Decision Recovery Plan required, included on the Commenced List (1/11/2009).
 
Adopted/Made Recovery Plans Zieria obcordata National Recovery Plan (Department of the Environment, Water, Heritage and the Arts, 2009g) [Recovery Plan].
 
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
NSW:Zieria obcordata - profile (NSW Department of Environment, Climate Change and Water (NSW DECCW), 2005nn) [Internet].
State Listing Status
NSW: Listed as Endangered (Threatened Species Conservation Act 1995 (New South Wales): August 2014 list)
Scientific name Zieria obcordata [3240]
Family Rutaceae:Sapindales:Magnoliopsida:Magnoliophyta:Plantae
Species author A.Cunn.
Infraspecies author  
Reference Geographical Memoirs on New South Wales (Apr. 1825) 330.
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.

Illustrations Google Images

A densely rounded shrub 40-50 cm high x 50 cm wide with inconspicuous white or pale pink flowers (Briggs & Leigh 1990; Armstrong 2002; Harden 2002).

The species is known only from near Bathurst on the Central Tablelands of NSW and from near Wellington on the Central Western Slopes of NSW. This represents a geographic range of 105 km (Briggs & Leigh 1990; Armstrong 2002; Harden 2002).

By 1988, the species had been collected only five times from three different localities. The type locality was vaguely described as 'rocky hills of the Macquarie River' and could not be relocated. (Briggs & Leigh 1990).

Site details from Briggs & Leigh (1990):

Site no.LocationLand tenureNo. of plantsAreaComments
1Bulbudgeree Station (near Wellington)Private freehold1000.5 haMature plants - no seedlings.
2Crackerjack Rock (near Bathurst)Private freehold1815 haMay be many more, as some plants are heavily browsed and easy to overlook.
3Crackerjack Rock N (near Bathurst)Private freehold1212 haMany may have been overlooked due to heavy grazing.

Since 1990, two additional populations, one of about 50 plants and the other of about 30 plants, have been located 2 km east of Crackerjack Rock (Armstrong 2002).

All known sites are on private property. None are within formal reserves (Briggs & Leigh 1990; Armstrong 2002).

Sites are moderately steep, rocky slopes with a westerly to north-westerly aspect. The plant grows in sandy loam soils in crevices and around the base of granite boulders (Briggs & Leigh 1990; RNEDB Mar. 2001; Armstrong 2002), within Eucalyptus, Callitris ) and Acacia-dominated woodland with an open, low-shrub understorey (Briggs & Leigh 1990; Armstrong 2002; Harden 2002).

Site details from Briggs & Leigh (1990):

Site 1 - Bulbudgeree Station. 500 m asl, on a granite outcrop. Moderate steep slopes of granite outcrop in undulating terrain surrounded by low hills. The plants occur in crevices between boulders, westerly to northerly aspect. Plants on the lower slopes show browsing damage. Exotic forbs and grasses have invaded these disturbed lower slopes. Vegetation is Eucalyptus blakelyi - Brachychiton populneus - Acacia implexa woodland with pockets of low shrub understorey dominated by Pandorea pandoreana, Haloragis sp., Cheilanthes sp., Lepidosperma sp. and Isotoma axillaris.

Site 2 - Crackerjack Rock. 770-830 m asl. Moderately steep boulder-strewn mid to lower slope of a conspicuous rocky hill emergent from a low rocky ridge. Northerly aspect. Vegetation is Eucalyptus goniocalyx - E. dwyeri - Acacia doratoxylon - Callitris glaucophylla woodland with understorey including Westringia eremicola, Leucopogon attenuatus, Dillwynia sericea, Olearia ramulosa, Stypandra glauca, Stellaria pungens, Acacia vestita, Melichrus urceolatus and Lepidosperma sp.

Site 3 - Crackerjack Rock North. 740 m asl. Moderately steep slope with much exposed granite rock and boulders on a low ridge extending north from a low hill, in generally undulating terrain, westerly aspect. Vegetation is Eucalyptus goniocalyx - E. macrorhyncha - Callitris glaucophylla woodland with understorey including Westringia eremicola, Cryptandra amara, Stypandra glauca, Acacia vestita, Stypheliasp., Kunzea sp.

Flowers occur in Sept. and Oct. (Briggs & Leigh 1990), with fruiting specimens observed in summer (Armstrong 2002).

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
Agriculture and Aquaculture:Livestock Farming and Grazing:Grazing pressures and associated habitat changes Zieria obcordata in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage, 2006aal) [Internet].
Zieria obcordata National Recovery Plan (Department of the Environment, Water, Heritage and the Arts, 2009g) [Recovery Plan].
Ecosystem/Community Stresses:Indirect Ecosystem Effects:Restricted geographical distribution (area of occupancy and extent of occurrence) Zieria obcordata National Recovery Plan (Department of the Environment, Water, Heritage and the Arts, 2009g) [Recovery Plan].
Invasive and Other Problematic Species and Genes:Invasive Non-Native/Alien Species:Competition and/or habitat degradation Heliotropium amplexicaule (Blue Heliotrope, Wild Heliotrope, Clasping Heliotrope, Creeping Heliotrope, Heliotrope, Purpletop, Turnsole, Wild Verbena) Zieria obcordata National Recovery Plan (Department of the Environment, Water, Heritage and the Arts, 2009g) [Recovery Plan].
Invasive and Other Problematic Species and Genes:Invasive Non-Native/Alien Species:Competition and/or habitat degradation Ailanthus altissima (Tree-of-heaven, Chinese Sumac, Stinking Cedar, Copal Tree, Varnish Tree, Hemelboom, Stinking Cedar) Zieria obcordata National Recovery Plan (Department of the Environment, Water, Heritage and the Arts, 2009g) [Recovery Plan].
Invasive and Other Problematic Species and Genes:Invasive Non-Native/Alien Species:Competition and/or habitat degradation Rubus fruticosus aggregate (Blackberry, European Blackberry) Zieria obcordata National Recovery Plan (Department of the Environment, Water, Heritage and the Arts, 2009g) [Recovery Plan].
Invasive and Other Problematic Species and Genes:Problematic Native Species:Competition, predation and/or habitat degradation by kangaroos and wallabies Zieria obcordata in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage, 2006aal) [Internet].
Natural System Modifications:Fire and Fire Suppression:Inappropriate and/or changed fire regimes (frequency, timing, intensity) Zieria obcordata National Recovery Plan (Department of the Environment, Water, Heritage and the Arts, 2009g) [Recovery Plan].
Protected status:Protected status:Lack of secure conservation land tenure Zieria obcordata in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage, 2006aal) [Internet].
Residential and Commercial Development:Housing and Urban Areas:Habitat clearance for rural, peri-urban and urban development Zieria obcordata in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage, 2006aal) [Internet].
Species Stresses:Indirect Species Effects:Low numbers of individuals Zieria obcordata in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage, 2006aal) [Internet].
Zieria obcordata National Recovery Plan (Department of the Environment, Water, Heritage and the Arts, 2009g) [Recovery Plan].
Transportation and Service Corridors:Utility and Service Lines:Powerline easement maintenance and construction; mortality due to collision with powerlines Zieria obcordata National Recovery Plan (Department of the Environment, Water, Heritage and the Arts, 2009g) [Recovery Plan].

Armstrong, J.A. (2002). Zieria (Rutaceae): a systematic and evolutionary study. Australian Systematic Botany. 15:277-463.

Briggs, J.D. & J.H. Leigh (1990). Delineation of Important Habitats of Threatened Plant Species in South-Eastern New South Wales. Canberra: Australian Heritage Commission.

Harden, G.J. (ed.) (2002). Flora of New South Wales, Volume Two - rev. edn. University of New South Wales Press, Sydney.

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.

Register of the National Estate Database (RNEDB) (2001). Register of the National Estate Database.

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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). Zieria obcordata in Species Profile and Threats Database, Department of the Environment, Canberra. Available from: http://www.environment.gov.au/sprat. Accessed Wed, 1 Oct 2014 01:52:23 +1000.