- Reference
- Marine Plants of Australia 200, 286-287 (2000)
- Conservation Code
- Not threatened
- Naturalised Status
- Native to Western Australia
- Name Status
- Current
Scientific Description
Habit and structure. Thallus (gametophyte) light brown to olive, partially prostrate but with unattached margins, 4-8 cm in length, membranous (to 250-300 µm thick), flabellate with occasional splitting at the margins. Marginal meristem trichothallic, with simple filaments 0.3-3.0 mm long, 17-25 µm diam. Concentric hair bands 2-3 mm apart in mature regions of thallus. Structure with medulla of 3-4 layers of hyaline cells, 150-200 x 120-150 µm, bordered by a single layer of pigmented cortical cells, 20-25 x 15-25 µm.
Reproduction. Female gametangia 55-80 x 15-25 µm, borne on hairs in concentric bands on the thallus surface. Male gametangia and sporophyte unknown
Distribution. Known from Ningaloo Reef, the Houtman Abrolhos Is. and Rottnest I., W. Aust.
Habitat. Epilithic in the shallow subtidal.
[After Huisman, Mar. Pl. Australia: 286 (2000)]
Distribution
- IBRA Regions
- Geraldton Sandplains, Swan Coastal Plain.
- IBRA Subregions
- Geraldton Hills, Perth.
- IMCRA Regions
- Abrolhos Islands, Leeuwin-Naturaliste.
- Local Government Areas (LGAs)
- Cockburn, Greater Geraldton.