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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.

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.