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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. Due to the rapidly approaching holiday season and associated agency and facility soft closures, along with the substantial work involved in data mapping, cleaning, and verification, the migration to the new collection management software is not expected to occur before 1 March 2026, when a further update will be provided. 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 Monday, 2 March 2026 +08:00.

Chaetomorpha billardierii Kütz.

Reference
Bot.Zeit. 166 (1847)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus light green, becoming yellow-green, loose-lying in extensive entangled masses (up to several metres across) of fairly straight filaments, in sheltered lower eulittoral to upper sublittoral habitats. Filaments without attachment cells, of similar diameter throughout. Cells (200–)220–350(–450) µm in diameter and L/B (1–)1.5–3(–4), not or only very slightly incised at the cross walls; wall 3–8(–20) µm thick, in some species thickened especially at the cross walls; chloroplasts openly reticulate with numerous pyrenoids; nuclei numerous.

Reproduction. Unknown.

Distribution. From Esperance, W. Aust., to the north coast of Kangaroo I., S. Aust., and around Tas.

Habitat. Loose-lying in calm-water situations.

[After Womersley, Mar. Benthic Fl. Southern Australia I: 176 (1984)]

John Huisman & Cheryl Parker, 3 August 2021

Distribution

IBRA Regions
Swan Coastal Plain, Warren.
IBRA Subregions
Perth, Warren.
Local Government Areas (LGAs)
Manjimup.