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.
(
click here to see geographic restrictions).
The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Brachyscome muelleroides
Profile last updated:
16 Aug 2018
Description
The Claypan Daisy is an annual herb that grows to 14 cm tall. Its single white flowers, only 4 mm across, are produced from September to November, at the ends of thread-like stems to 3 cm long. The 5.5 cm long leaves, growing from the stem, are also thread-like.
Distribution
The Claypan Daisy occurs in the Wagga Wagga, Narranderra, Tocumwal and Walbundrie areas. Also occurs in north-central Victoria (only along the Murray from Tocumwal to the Ovens River).
Habitat and ecology
- Grows in damp areas on the margins of claypans in moist grassland with Pycnosorus globosus, Agrostis avenacea and Austrodanthonia duttoniana.
- Also recorded from the margins of lagoons in mud or water, and in association with Calotis anthemoides.
- Victorian collections have generally come from open positions on the Murray River floodplain, swampy River Red Gum (Eucalyptus camaldulensis) Forest and damp depressions.
Regional distribution and habitat
Click on a region below to view detailed distribution, habitat and vegetation information.
Threats
- Changes in land use on agricultural land (to a more intensive use).
- Drainage of swamps.
- Clearing of roadside vegetation.
- Low-lying, seasonally inundated areas are usually extremely sensitive to disturbances caused by domestic stock or vehicles during the wetter months.
- The regulation of water flow in the Murray River, especially the decrease in flood frequency may have affected the range of the species.
- The use of recreational vehicles.
- Timber extraction from the riparian forest habitats.
- Only a single significant population exists, species is vulnerable to extinction via stochastic events.
- The species has a restricted distribution, though additional populations are likely to exist in suitable habitat in surrounding areas.
- Direct competition for space and resources by species such as rye grass and others.
- Physical disturbances due to direct grazing and/or pugging; likely to degrade habitat and remove individuals.
Recovery strategies
Priority actions are the specific, practical things that must be done to recover a threatened species, population or ecological
community. The Office of Environment and Heritage has identified
10 priority actions
to help recover the Claypan Daisy in New South Wales.
Activities to assist this species
- Alert land managers to the presence of populations and their appropriate management.
- Maintain natural drainage characteristics.
- All vegetation within 200 m of swamps supporting the species should be retained and not disturbed.
- Avoid the introduction of heavy, prolonged grazing on sites where the species occurs.
- Protect wetlands and their surrounds.
- Mark sites and potential habitat onto maps used for planning roadworks.
Information sources
- Benson, J.S., Ashby, E.M. and Porteners, M.F. (1996) The native grasslands of the southern Riverina, New South Wales. Report to the Australian Nature Conservation Agency. (Royal Botanic Gardens, Sydney)
- Benson, J.S., Ashby, E.M. and Porteners, M.F. (1997) The native grasslands of the Riverine Plain, New South Wales. Cunninghamia 5(1): 1-48
- Everett, J. (1992) Brachycome in Harden, G.J. (ed.) Flora of New South Wales. Volume 3. (New South Wales University Press, Kensington)
- Lucas, A. (2010) National Recovery Plan for the Mueller Daisy Brachyscome muelleroides. (Department of Sustainability and Environment, Melbourne)
- Murray Catchment Management Authority and Office of Environment and Heritage (2012) New South Wales Murray Biodiversity Management Plan: A guide to terrestrial biodiversity investment priorities in the central and eastern NSW Murray catchment. (Murray CMA, Albury)
- Porteners, M. and Robertson, G. (2003) Threatened Plants in Western New South Wales: Information Review. (NSW NPWS, Hurstville)
- Walsh, N.G. and Entwisle, T.J. (1999) Flora of Victoria; Volume 4, Dicotyledons Cornaceae to Asteraceae. (Inkata Press, Melbourne)
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