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Service Notice

The Western Australian Herbarium’s collections management system and census were set to read-only mode on 1 October 2025. Taxonomic updates published since this time are not being reflected in Florabase, herbarium collections, or Western Australia’s taxonomic names census (Nomos). Conservation listings displayed on Florabase may also be out of date. Please refer to DBCA’s Threatened species and communities webpage for the most recent Threatened and Priority Flora List, noting that recent taxonomic updates are similarly not included. Our database migration is moving to a staging phase. We thank you for your patience as we ensure the integrity of our biodiversity data, develop new workflows, and train staff to use the new systems. Please reach out to us if you have any questions or concerns.

The notice period started at 12:00 pm on Wednesday, 1 October 2025 +08:00 and will end at 12:00 pm on Friday, 1 January 2027 +08:00.

Chaetomorpha linum (O.F.Müll.) Kütz.

Reference
Phycol.General. 204 (1843)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus medium to dark green, fairly rigid, loose-lying as entangled masses or long strands of single, curved, filaments amongst other algae in sheltered habitats of the lower eulittoral or uppermost sublittoral. Filaments without attachment cells, of similar diameter throughout. Cells (200–)240–400 µm in diameter and L/B (0.5–)0.7–1(–1.5), not or only very slightly incised at the cross walls; wall 5–10 µm thick. Chloroplasts moderately to densely reticulate and lobed, with numerous pyrenoids.

Reproduction. Not reported for Australian material. Elsewhere, with gametophytic and sporophytic phases.

Distribution. Widespread. In southern Australia, from Walpole Inlet and probably the west cost of W. Aust., to Nelson Lagoon, Vic., and probably further east, in calm-water bays and lagoons.

[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.
IMCRA Regions
Leeuwin-Naturaliste.
Local Government Areas (LGAs)
Augusta Margaret River, East Fremantle, Mandurah, Manjimup, Melville, Murray.