- Reference
- Acta Univ.Lund. 60-61 (1897)
- Conservation Code
- Not threatened
- Naturalised Status
- Native to Western Australia
- Name Status
- Current
Scientific Description
Habit and structure. Thallus dark brown-red, erect, 10–25 cm high, complanately and irregularly branched with indeterminate branches 1–2 mm broad and separated by 3 to many determinate laterals on each side. Determinate laterals 2–3(–5) mm long, slender, usually with 2–3 apical branches, 2–5 mm apart on each side of indeterminate branches, denuded near the thallus base. Holdfast probably fibrous (inadequately seen). Structure. Apical structure not observed. Axial cells moderately conspicuous, branching to the determinate laterals every 3–4 cells. Indeterminate branches with 6 pericentral cells, corticated from near the apices; indeterminate laterals corticated. Trichoblasts not observed.
Reproduction.Only tetrasporangial branch clusters seen, situated on the surface over lateral veins of determinate laterals, much branched; tetrasporangia immature.
Distribution. Port Elliot, S. Aust., and Walkerville, Vic. J. Agardh placed similar specimens from Geographe Bay, W. Aust., under this species.
[After Womersley, Mar. Benthic Fl. Southern Australia IIID: 345–347 (2003)]