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Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s flora taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not currently being reflected in Florabase, herbarium collections, or the census. The Herbarium team, working with the Biodiversity Information Office, now have the Nomos-hosted WACensus in production, and we will begin to update the flora and fungi for WA within the system soon. The Specify project team continues to test and streamline the new collections management system, and we expect this to be online in October. Please reach out to us if you have any questions or concerns.

The notice period started at 9:45 am on Friday, 12 December 2025 +08:00 and will end at 12:00 pm on Thursday, 1 October 2026 +08:00.

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Isolepis cernua (Vahl) Roem. & Schult.
Nodding Club-rush

Reference
Syst.Veg. 2:106 (1817)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

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.

Amanda Spooner, Descriptive Catalogue, 19 May 2003

Distribution

IBRA Regions
Avon Wheatbelt, Coolgardie, Esperance Plains, Geraldton Sandplains, Jarrah Forest, Mallee, Swan Coastal Plain, Warren, Yalgoo.
IBRA Subregions
Dandaragan Plateau, Eastern Mallee, Edel, Fitzgerald, Geraldton Hills, Katanning, Lesueur Sandplain, Mardabilla, Merredin, Northern Jarrah Forest, Perth, Recherche, Southern Cross, Southern Jarrah Forest, Tallering, Warren, Western Mallee.
IMCRA Regions
Leeuwin-Naturaliste, WA South Coast.
Local Government Areas (LGAs)
Albany, Armadale, Augusta Margaret River, Beverley, Boyup Brook, Bruce Rock, Bunbury, Busselton, Canning, Capel, Carnamah, Chapman Valley, Chittering, Claremont, Cockburn, Coorow, Cranbrook, Cuballing, Dalwallinu, Dandaragan, Denmark, Donnybrook-Balingup, Dundas, Esperance, Gingin, Gnowangerup, Goomalling, Gosnells, Greater Geraldton, Harvey, Jerramungup, Kalamunda, Katanning, Kojonup, Kondinin, Mandurah, Manjimup, Melville, Merredin, Murray, Nannup, Narrogin, Northam, Northampton, Perenjori, Perth, Plantagenet, Ravensthorpe, Rockingham, Serpentine-Jarrahdale, Shark Bay, South Perth, Stirling, Swan, Toodyay, Victoria Plains, Wagin, Wanneroo, Waroona, West Arthur, Westonia, Wongan-Ballidu, Woodanilling, Yilgarn, York.