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: Eleocharis obicis
Profile last updated:
18 Oct 2022
Description
This small sedge is a tufted perennial with very short underground stem. Stems about 30 cm high, about 1 mm diameter, cylindrical and striped. Flowerhead 20-30 mm long, about 2.5 mm wide, 20-30-flowered, straw-coloured tinged dark red-brown. Nut narrowed to a distinct neck, about 1.5 mm long, 1.2 mm in diameter, pale yellow to dark brown, unequally triangular in cross-section with the angles ribbed and bristles red.
Distribution
Found near Condobolin and Hay, as well as being known from an old collection from the Barrier Range near Broken Hill. The later collection was made on the Lachlan River floodplain at Micabil, near Condobolin.
Habitat and ecology
- Grows in ephemerally wet situations such as roadside mitre drains and depressions, usually in low-lying grasslands.
- Sites include depressions with heavy clay soils on the Lachlan River floodplain, with Eragrostis australasica, Atriplex vesicaria and A. nummularia shrublands, low-lying claypans near an irrigation channel, and a shallow open ditch on a low ridge with Eucalyptus populnea in red sandy soil over clay.
- Recorded as flowering in November.
- Found to be locally frequent to abundant in western NSW populations.
Regional distribution and habitat
Click on a region below to view detailed distribution, habitat and vegetation information.
Threats
- Habitat clearing and modification (for agriculture and sheep grazing).
- Grazing, trampling and pugging (stock particularly sheep).
- Weed invasion and competition.
- Feral animals (pigs, rabbits).
- Insufficient understanding of distribution.
- Insufficient understanding of threats.
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
- Feral animal control (pigs, rabbits).
- Protect existing populations from stock with the construction of appropriate fencing.
- Weed monitoring and control at sites.
- No further loss of extant populations.
- Survey for new populations
Information sources
- Briggs, J.D. and Leigh, J.H. (1996) Rare or Threatened Australian Plants. Revised Edition. (CSIRO Publishing, Melbourne)
- Cunningham, G.M. and Milthorpe, P.L. (1981) The vascular plants of five exclosure sites in western New South Wales. Cunninghamia 1(1): 23-34.
- Cunningham, G.M., Mulham, W.E., Milthorpe, P.L. and Leigh, J.H. (1992) Plants of Western New South Wales. (Inkata Press, Sydney)
- Johnson, L.A.S. and Evans, O.D. (1968) New species in Eleocharis. Contributions from the New South Wales National Herbarium 4(2): 70-72.
- Porteners, M.F. (1993) The natural vegetation of the Hay Plain: Booligal-Hay and Deniliquin-Bendigo 1:250 000 maps. Cunninghamia 3(1): 1-122
- Pressey, R.L., Cohn, J.S. and Porter, J.L. (1990) Vascular plants with restricted distributions in the Western Division of New South Wales. Proceedings of the Linnean Society of New South Wales 112: 213-227
- Wilson, K.L. (1993) Eleocharis. In Harden, G.J. (ed.) Flora of New South Wales. Volume 4. New South Wales University Press: Sydney.
|
IBRA Bioregion
|
IBRA Subregion
|
Known or predicted
|
Geographic restrictions region
|
|---|