Skip to main content

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.

Advanced Search

Onopordum acaulon L.
Stemless Onopordon

Reference
Sp.Pl. [Linnaeus] edn 2, 2:1159 (1763)
Conservation Code
Not threatened
Naturalised Status
Alien to Western Australia
Name Status
Current

Spiny, woolly biennial, herb, to 1 m high. Fl. purple, Jul or Oct to Dec. Weed of pastures, arable land & roadsides.

Amanda Spooner, Descriptive Catalogue, 21 May 1997
Image

Distribution

IBRA Regions
Avon Wheatbelt, Mallee.
IBRA Subregions
Eastern Mallee, Merredin, Western Mallee.
IMCRA Regions
Central West Coast.
Local Government Areas (LGAs)
Esperance, Kulin, Lake Grace, Mingenew.