Chaetomorpha linum (O.F.Müll.) Kütz.
Phycol.General. 204 (1843)

Conservation Code: Not threatened
Naturalised Status: Native to Western Australia
Name Status: Current

Distribution

Beard’s Provinces: South-West Province.

IBRA Regions: Swan Coastal Plain, Warren.

IBRA Subregions: Perth, Warren.

IMCRA Regions: Eyre, Leeuwin-Naturaliste.

Local Government Areas (LGAs): Augusta-Margaret River, East Fremantle, Mandurah, Manjimup, Melville, Murray.

Scientific Description
John Huisman & Cheryl Parker, Thursday 8 September 2016

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)]