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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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Isotoma hypocrateriformis (R.Br.) Druce
Woodbridge Poison

Reference
Rep.Bot.Exch.Club Brit.Isles 4:629 (1917)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Erect, succulent annual, herb, 0.08-0.6 m high. Fl. white-blue-purple-pink, Sep to Dec or Jan. Sand, granite, laterite. Variety of habitats.

Amanda Spooner, Descriptive Catalogue, 10 September 1999
Image

Distribution

IBRA Regions
Avon Wheatbelt, Coolgardie, Esperance Plains, Geraldton Sandplains, Jarrah Forest, Mallee, Swan Coastal Plain, Warren.
IBRA Subregions
Dandaragan Plateau, Eastern Mallee, Fitzgerald, Geraldton Hills, Katanning, Lesueur Sandplain, Merredin, Northern Jarrah Forest, Perth, Recherche, Southern Cross, Southern Jarrah Forest, Warren, Western Mallee.
IMCRA Regions
Central West Coast, Leeuwin-Naturaliste, WA South Coast.
Local Government Areas (LGAs)
Albany, Armadale, Augusta Margaret River, Bayswater, Boyup Brook, Bridgetown-Greenbushes, Busselton, Canning, Capel, Carnamah, Chittering, Collie, Coorow, Corrigin, Cranbrook, Cuballing, Dandaragan, Denmark, Esperance, Gingin, Gnowangerup, Goomalling, Gosnells, Greater Geraldton, Harvey, Irwin, Jerramungup, Joondalup, Kalamunda, Kellerberrin, Kojonup, Lake Grace, Manjimup, Merredin, Mingenew, Moora, Morawa, Mount Marshall, Mundaring, Murray, Nannup, Narembeen, Narrogin, Northampton, Nungarin, Perenjori, Perth, Pingelly, Plantagenet, Ravensthorpe, Serpentine-Jarrahdale, Swan, Tammin, Three Springs, Toodyay, Victoria Plains, Wagin, Wanneroo, Waroona, West Arthur, Westonia, Wongan-Ballidu, York.