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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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Caustis dioica R.Br.

Reference
Prodr. 239 (1810)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Monoecious, rhizomatous, tangled, tussocky, pungent leaved perennial, grass-like or herb (sedge), 0.15-0.7 m high, to 0.5 m wide. Fl. yellow & brown, Sep to Dec. White, grey, yellow or red sand, loam.

Amanda Spooner, Descriptive Catalogue, 8 December 2003
Image

Distribution

IBRA Regions
Avon Wheatbelt, Esperance Plains, Geraldton Sandplains, Jarrah Forest, Mallee, Swan Coastal Plain.
IBRA Subregions
Dandaragan Plateau, Eastern Mallee, Fitzgerald, Geraldton Hills, Katanning, Lesueur Sandplain, Merredin, Northern Jarrah Forest, Perth, Recherche, Southern Jarrah Forest, Western Mallee.
IMCRA Regions
WA South Coast.
Local Government Areas (LGAs)
Albany, Beverley, Brookton, Broomehill-Tambellup, Bruce Rock, Busselton, Carnamah, Chittering, Coorow, Corrigin, Cranbrook, Cuballing, Cunderdin, Dandaragan, Dowerin, Dumbleyung, Esperance, Gingin, Gnowangerup, Irwin, Jerramungup, Kalamunda, Kent, Kojonup, Kulin, Lake Grace, Mingenew, Moora, Narrogin, Northam, Northampton, Pingelly, Plantagenet, Quairading, Ravensthorpe, Swan, Tammin, Three Springs, Victoria Plains, Wagin, Wanneroo, West Arthur, Wickepin, Williams, Wongan-Ballidu, Woodanilling, York.