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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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Chaetomorpha basiretrorsa Setch.

Reference
Univ.Calif.Publ.Bot. 12:72, Pl. 8, Figs 4-6 (1926)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus forming dense prostrate mats composed of stiff irregularly curved decumbent filaments attached by numerous rhizoidal branchlets, septate or non-septate. Cells (225-) 275–400 (–550) µm diam. [L:B 0.75–3 (–4)].

Distribution. Widespread in the Indian and Pacific Oceans.

Habitat. Generally epilithic in the high intertidal, on rock associated with sand.

[After Huisman & Leliaert, Algae of Australia: Mar. Benthic Algae of North-western Australia, 1. Green and Brown Algae 49 (2015)]

John Huisman and Cheryl Parker, 3 August 2021

Distribution

IBRA Regions
Pilbara.
IBRA Subregions
Roebourne.
Local Government Areas (LGAs)
Karratha.