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Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not reflected in Florabase, herbarium collections, or in the census. We are hoping to be able to reinstate services around December 15; we will provide an update at that time.

The notice period started at 9:00 am on Wednesday, 1 October 2025 +08:00 and will end at 12:00 pm on Monday, 15 December 2025 +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.