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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. Due to the rapidly approaching holiday season and associated agency and facility soft closures, along with the substantial work involved in data mapping, cleaning, and verification, the migration to the new collection management software is not expected to occur before 1 March 2026, when a further update will be provided. 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 Monday, 2 March 2026 +08:00.

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Cyperus bifax C.B.Clarke
Downs Nutgrass

Reference
Bull.Misc.Inform.Kew, Addit.Ser. Ser.8:13 (1908)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Rhizomatous and tuberous, caespitose, colonial perennial, grass-like or herb (sedge), 0.3-1 m high. Fl. brown, Jan to Aug. Red or grey sandy loam, black clay. Stream banks, swamps.

Amanda Spooner, Descriptive Catalogue, 24 September 2007

Distribution

IBRA Regions
Carnarvon, Central Kimberley, Dampierland, Gascoyne, Great Sandy Desert, Little Sandy Desert, Murchison, Ord Victoria Plain, Pilbara, Victoria Bonaparte.
IBRA Subregions
Ashburton, Augustus, Cape Range, Chichester, Eastern Murchison, Fitzroy Trough, Fortescue, Hamersley, Hart, Keep, McLarty, Pindanland, Purnululu, Roebourne, Rudall, Trainor, Western Murchison, Wooramel.
IMCRA Regions
Canning.
Local Government Areas (LGAs)
Ashburton, Broome, Carnarvon, Derby-West Kimberley, East Pilbara, Halls Creek, Karratha, Leonora, Meekatharra, Murchison, Port Hedland, Shark Bay, Upper Gascoyne, Wyndham-East Kimberley.