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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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Trianthema portulacastrum L.
Giant Pigweed

Reference
Sp.Pl. [Linnaeus] 1:223-224 (1753)
Conservation Code
Not threatened
Naturalised Status
Alien to Western Australia
Name Status
Current

Prostrate to decumbent, spreading annual, herb, 0.01-0.2 m high, to 1 m wide. Fl. pink/white, Mar to Sep. Clay, sand. Roadsides, disturbed & cultivated areas.

Grazyna Paczkowska, Descriptive Catalogue, 25 October 1995
Image

Distribution

IBRA Regions
Central Kimberley, Dampierland, Indian Tropical Islands, Ord Victoria Plain, Pilbara, Victoria Bonaparte.
IBRA Subregions
Chichester, Fitzroy Trough, Hamersley, Keep, Mount Eliza, Pindanland, Purnululu, Roebourne.
IMCRA Regions
Kimberley, Pilbara (nearshore).
Local Government Areas (LGAs)
Ashburton, Broome, Christmas Island, Derby-West Kimberley, East Pilbara, Halls Creek, Karratha, Port Hedland, Wyndham-East Kimberley.