Erect, caespitose rhizomatous, annual or perennial, grass-like or herb (sedge), to 0.3 m high, spikelets +/- terete; flowers usually all with 3 stamens and 3 style branches; nut usually 3-angled. Fl. green-brown, Jun to Dec or Jan to Feb. Dark peaty or clay loam, sandy clay, silt, saline soils, granite. Swamps, pools, estuary margins, seepage areas, winter-wet depressions.
Beard’s Provinces: South-West Province.
IBRA Regions: Avon Wheatbelt, Esperance Plains, Jarrah Forest, Mallee, Swan Coastal Plain, Warren.
IBRA Subregions: Avon Wheatbelt P2, Eastern Mallee, Fitzgerald, Northern Jarrah Forest, Perth, Southern Jarrah Forest, Warren.
Local Government Areas (LGAs): Albany, Boyup Brook, Busselton, Esperance, Gingin, Jerramungup, Katanning, Kojonup, Manjimup, Plantagenet, Victoria Plains, Wagin, Wanneroo, Waroona, Woodanilling.