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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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Paspalidium constrictum (Domin) C.E.Hubb.
Knottybutt Grass

Reference
Bull.Misc.Inform.Kew 447 (1934)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Often rhizomatous, tufted perennial, grass-like or herb, 0.2-0.6 m high. Fl. green/purple, mostly Apr to Aug. Red sand, red or dark brown loam, clay.

Grazyna Paczkowska, Descriptive Catalogue, 1 December 1993

Distribution

IBRA Regions
Avon Wheatbelt, Central Ranges, Coolgardie, Gascoyne, Geraldton Sandplains, Great Victoria Desert, Jarrah Forest, Mallee, Murchison, Nullarbor, Pilbara, Yalgoo.
IBRA Subregions
Augustus, Carlisle, Carnegie, Central, Chichester, Eastern Goldfield, Eastern Mallee, Eastern Murchison, Edel, Fortescue, Geraldton Hills, Hamersley, Katanning, Mann-Musgrave Block, Merredin, Northern Jarrah Forest, Nullarbor Plain, Roebourne, Shield.
Local Government Areas (LGAs)
Ashburton, Coolgardie, Coorow, Cunderdin, Dundas, East Pilbara, Esperance, Greater Geraldton, Kalgoorlie-Boulder, Karratha, Laverton, Leonora, Meekatharra, Menzies, Moora, Ngaanyatjarraku, Northam, Nungarin, Port Hedland, Shark Bay, Swan, Victoria Plains, Wiluna, York.