Nature conservation

Threatened species

Spike-Rush - profile

Indicative distribution

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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
Conservation status in NSW: Vulnerable
Commonwealth status: Vulnerable
Profile last updated: 18 Oct 2022


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.


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.


Recovery strategies

Activities to assist this species

Information sources

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
Broken Hill ComplexBarrier Range Known None
Cobar PeneplainLachlan Plains Known None
Cobar PeneplainNymagee Known None
Murray Darling DepressionDarling Depression Predicted None
NSW South Western SlopesLower Slopes Known None
RiverinaLachlan Known None