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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 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.

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Amaranthus undulatus R.Br.

Reference
Prodr.Fl.Nov.Holland. 414 (1810)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Erect, open annual, herb, to 1 m high. Fl. green/white, Mar or May or Jul. Red sandy loams, gritty red skeletal soil with stony gibbers on the surface, grey-brown loam, pindan soil, laterite. Plains, riverbedas and riverbanks, floodplains, slopes, crests of hills, croplands.

Amanda Spooner, Descriptive Catalogue, 9 October 2007
Image

Distribution

IBRA Regions
Carnarvon, Central Kimberley, Dampierland, Gascoyne, Great Sandy Desert, Indian Tropical Islands, Little Sandy Desert, Murchison, Northern Kimberley, Ord Victoria Plain, Pilbara, Tanami, Victoria Bonaparte, Yalgoo.
IBRA Subregions
Ashburton, Augustus, Berkeley, Cape Range, Chichester, Edel, Fitzroy Trough, Fortescue, Hamersley, Hart, Keep, Mackay, McLarty, Mitchell, Mount Eliza, Pentecost, Pindanland, Purnululu, Roebourne, Rudall, Tanami Desert, Timor Sea Coral Islands, Western Murchison, Wooramel.
IMCRA Regions
Canning, Kimberley, Ningaloo, North West Shelf, Pilbara (nearshore), Pilbara (offshore), Shark Bay.
Local Government Areas (LGAs)
Ashburton, Broome, Carnarvon, Derby-West Kimberley, East Pilbara, Exmouth, Halls Creek, Karratha, Murchison, Port Hedland, Shark Bay, Upper Gascoyne, Wyndham-East Kimberley.