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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 project team is now conducting testing of the migrated data, and a further update will be provided by the end of the financial year (1 July). 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 Wednesday, 1 July 2026 +08:00.

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Cyperus tenellus L.f.
Tiny Flatsedge

Reference
Suppl.Pl. 103 (1782)
Conservation Code
Not threatened
Naturalised Status
Alien to Western Australia
Name Status
Current

Tufted annual, grass-like or herb (sedge), 0.02-0.12 m high, stems filiform, 0.1-0.2mm diam, with a solitary spikelet or 2-4 spikelets in a pseudolateral cluster. Fl. green-brown, Aug to Nov or Jan. White or grey clayey sand, clay, brown loam, granite. Margins of swamps, rockpools on granite and other damp habitats.

Helen Coleman, Descriptive Catalogue, 14 December 1998

Distribution

IBRA Regions
Avon Wheatbelt, Coolgardie, Esperance Plains, Geraldton Sandplains, Jarrah Forest, Mallee, Swan Coastal Plain, Warren, Yalgoo.
IBRA Subregions
Fitzgerald, Geraldton Hills, Katanning, Lesueur Sandplain, Northern Jarrah Forest, Perth, Recherche, Southern Cross, Southern Jarrah Forest, Tallering, Warren, Western Mallee.
IMCRA Regions
WA South Coast.
Local Government Areas (LGAs)
Albany, Armadale, Augusta Margaret River, Bayswater, Beverley, Boyup Brook, Bridgetown-Greenbushes, Brookton, Busselton, Canning, Capel, Carnamah, Chittering, Cranbrook, Cuballing, Denmark, Donnybrook-Balingup, Dundas, Esperance, Gingin, Gnowangerup, Gosnells, Greater Geraldton, Harvey, Jerramungup, Kalamunda, Kojonup, Lake Grace, Manjimup, Mundaring, Murray, Nannup, Narrogin, Northampton, Perenjori, Pingelly, Plantagenet, Serpentine-Jarrahdale, South Perth, Swan, Toodyay, Victoria Plains, Wanneroo, West Arthur, Wickepin, Williams, Woodanilling, Yilgarn, York.