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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 Herbarium team, working with the Biodiversity Information Office, now have the Nomos-hosted WACensus in production, and we will begin to update the flora and fungi for WA within the system soon. The Specify project team continues to test and streamline the new collections management system, and we expect this to be online in October. 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 Thursday, 1 October 2026 +08:00.

Myriophyllum decussatum Orchard

Reference
Brunonia 8:282-284 (1985)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Semi-aquatic annual, herb, forming open mats 1-2 m diameter. Fl. Jul to Sep. Floating in shallow water or growing in mud. Claypans, lakes.

Grazyna Paczkowska, Descriptive Catalogue, 27 February 1996
Image

Distribution

IBRA Regions
Avon Wheatbelt, Carnarvon, Gascoyne, Murchison, Yalgoo.
IBRA Subregions
Augustus, Cape Range, Eastern Murchison, Merredin, Tallering, Wooramel.
Local Government Areas (LGAs)
Ashburton, Carnarvon, Cue, Dalwallinu, Leonora, Menzies, Perenjori, Sandstone, Upper Gascoyne, Yalgoo.