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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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Malvastrum americanum (L.) Torr.
Spiked Malvastrum

Reference
Emory, Rep.U.S.Mex.Bound.,Bot. 2 (2):38 (1858)
Conservation Code
Not threatened
Naturalised Status
Alien to Western Australia
Name Status
Current

Erect perennial, herb or shrub, 0.5-1.3 m high. Fl. yellow-orange, Apr to Jul. Orange/red/yellow sands, gritty alluvial sand, black/brown clay, alluvial cracking clays, limestone, calcrete. Stony ridges and hillsides, floodplains, along drainage lines.

Amanda Spooner, Descriptive Catalogue, 11 June 2005
Image

Distribution

IBRA Regions
Carnarvon, Central Kimberley, Central Ranges, Dampierland, Gascoyne, Great Sandy Desert, Little Sandy Desert, Murchison, Nullarbor, Ord Victoria Plain, Pilbara, Victoria Bonaparte.
IBRA Subregions
Ashburton, Augustus, Cape Range, Carlisle, Carnegie, Chichester, Eastern Murchison, Fitzroy Trough, Fortescue, Hamersley, Hart, Keep, Mackay, Mann-Musgrave Block, McLarty, Mount Eliza, Nullarbor Plain, Pentecost, Pindanland, Purnululu, Roebourne, Rudall, Trainor, Wooramel.
IMCRA Regions
Pilbara (nearshore), Shark Bay.
Local Government Areas (LGAs)
Ashburton, Broome, Carnarvon, Cue, Derby-West Kimberley, Dundas, East Pilbara, Exmouth, Halls Creek, Kalgoorlie-Boulder, Karratha, Meekatharra, Menzies, Ngaanyatjarraku, Upper Gascoyne, Wiluna, Wyndham-East Kimberley.