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, this species had a recovery plan in force at the time the legislation provided for the Minister to decide whether or not to have a recovery plan (19/2/2007).
 
Adopted/Made Recovery Plans Irwin's Conostylis (Conostylis dielsii subsp. teres) Interim Recovery Plan 2005-2009 Page(s) 1-14. (Chant, A., G. Stack & V. English, 2005) [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
WA:Declared Rare Flora in the Katanning District (Graham, M. & M. Mitchell, 2000) [State Species Management Plan].
WA:Declared Rare or Poorly Known Flora in the Geraldton District (Patrick, S.J., 2001) [State Species Management Plan].
WA:Western Australian Wildlife Management Program No. 28. Declared Rare and Poorly Known Flora in the Moora District (Patrick, S.J. & A.P. Brown, 2001) [State Species Management Plan].
State Listing Status
WA: Listed as Vulnerable (Wildlife Conservation Act 1950 (Western Australia): September 2013 list)
Scientific name Conostylis dielsii subsp. teres [3614]
Family Haemodoraceae:Liliales:Liliopsida:Magnoliophyta:Plantae
Species author  
Infraspecies author Hopper
Reference Hopper, S.D., Purdie, R.W., George, A.S. & Patrick, S.J. in George, A.S. (Ed) (1987), Flora of Australia 45: 460 (100, Fig. 42, Map 106) [tax. nov.]
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
http://florabase.dec.wa.gov.au/browse/profile/11258

The Irwin Conostylis is a shortly rhizomatous (Paczkowska & Chapman 2000) tufted perennial grass-like herb growing to 20 cm tall (Patrick 2001).

This species is known from a restricted area NE of Dongara, WA (Patrick 2001). It is now known from three populations, two on road verges and one small population on a nature reserve c. 30 further N (Patrick 2001).

Population details as in Patrick (2001) and Patrick & Brown (2001):

Population [as
numbered by
WA CALM]
LocationLand StatusYear of survey/
number of plants
Condition
1N of IrwinShire road reserve1976 - <10 000
1992 - 1+
1996 - 10
Moderate to poor, evidence of
rabbits and weed infestation
2N of IrwinShire road reserve1996 - 340+Healthy, but evidence of rabbits
3E of WalkawayNature reserve1996 - 11Healthy
4NW of Strawberry 1975 - <1000 
5NW of Strawberry 1976 
6The Casuarinas 1975 - <10 

Population One, when found in 1976 had been recently burnt. There are now few plants and few have been found since it was first re-inspected in 1992 (Patrick 2001).

Differs from Conostylis dielsii subsp. dielsii in the terete, not flat, leaves, which are also slightly longer. Also similar to C. teretiuscula, which has silvery, villous hairs on the leaves and numerous ovules on the sides and lower part of the placenta (Patrick 2001).

Grows in white, pale yellow or grey sand with lateritic gravel, in heath, open scrub, low open heath and low open woodland, in upland areas (Brown et al. 1998). Associated species include Hibbertia hypericoides, Hakea trifurcata, Eremaea beaufortioides and Allocasuarina humilis (Patrick 2001).

This subspecies has small cream flowers borne during the period July-Aug (Hopper et al. 1987). It is thought to regenerate after fire, like other members of the genus, from subterranean regenerative buds emerging from horizontal rhizomes (Gill 1981 in Patrick 2001). The genus consists of a mixture of insect and bird pollinated species (Holland et al. 1997b).

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
Human Intrusions and Disturbance:Human Intrusions and Disturbance:Mechanical disturbance during construction, maintanance or recreational activities Irwin's Conostylis (Conostylis dielsii subsp. teres) Interim Recovery Plan 2005-2009 Page(s) 1-14. (Chant, A., G. Stack & V. English, 2005) [Recovery Plan].
Invasive and Other Problematic Species and Genes:Invasive Non-Native/Alien Species:Competition and/or habitat degradation Oryctolagus cuniculus (Rabbit, European Rabbit) Irwin's Conostylis (Conostylis dielsii subsp. teres) Interim Recovery Plan 2005-2009 Page(s) 1-14. (Chant, A., G. Stack & V. English, 2005) [Recovery Plan].
Invasive and Other Problematic Species and Genes:Invasive Non-Native/Alien Species:Competition and/or habitat degradation by weeds Irwin's Conostylis (Conostylis dielsii subsp. teres) Interim Recovery Plan 2005-2009 Page(s) 1-14. (Chant, A., G. Stack & V. English, 2005) [Recovery Plan].
Natural System Modifications:Fire and Fire Suppression:Inappropriate and/or changed fire regimes (frequency, timing, intensity) Irwin's Conostylis (Conostylis dielsii subsp. teres) Interim Recovery Plan 2005-2009 Page(s) 1-14. (Chant, A., G. Stack & V. English, 2005) [Recovery Plan].
Species Stresses:Species Stresses:unspecified Irwin's Conostylis (Conostylis dielsii subsp. teres) Interim Recovery Plan 2005-2009 Page(s) 1-14. (Chant, A., G. Stack & V. English, 2005) [Recovery Plan].
Transportation and Service Corridors:Roads and Railroads:Development and/or maintenance of roads Irwin's Conostylis (Conostylis dielsii subsp. teres) Interim Recovery Plan 2005-2009 Page(s) 1-14. (Chant, A., G. Stack & V. English, 2005) [Recovery Plan].

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

Council of Heads of Australian Botanic Gardens (CHABG) (1994). Census of plants in botanic gardens. [Online]. Canberra: Australian National Botanic Gardens. Available from: http://www.anbg.gov.au/chabg/census/census.html.

Graham, M. & M. Mitchell (2000). Declared Rare Flora in the Katanning District. [Online]. Western Australia Department of Conservation and Land Management. Available from: http://www.dpaw.wa.gov.au/plants-and-animals/threatened-species-and-communities/threatened-plants.

Holland, E., K. Kershaw & A. Brown (1997b). Small-flowered Conostylis (Conostylis micrantha) Interim Recovery Plan 1996-1999. Wanneroo, Western Australia: Department of Conservation and Land Management.

Hopper, S.D., R.W. Purdie, A.S. George & S.J. Patrick (1987). Conostylis. In: Flora of Australia. 45:57-110. Canberra, ACT: Australian Government Publishing Service.

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.

Patrick, S.J. (2001). Declared Rare or Poorly Known Flora in the Geraldton District. [Online]. Wildlife Management Program No 26. Perth, Western Australia: Department of Conservation and Land Management. Available from: http://www.dpaw.wa.gov.au/plants-and-animals/threatened-species-and-communities/threatened-plants.

Patrick, S.J. & A.P. Brown (2001). Western Australian Wildlife Management Program No. 28. Declared Rare and Poorly Known Flora in the Moora District. [Online]. Perth, Western Australia: Department of Conservation and Land Management. Available from: http://www.dpaw.wa.gov.au/plants-and-animals/threatened-species-and-communities/threatened-plants.

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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). Conostylis dielsii subsp. teres in Species Profile and Threats Database, Department of the Environment, Canberra. Available from: http://www.environment.gov.au/sprat. Accessed Sat, 26 Jul 2014 00:32:25 +1000.