- Sci.Pap.Inst.Algol.Res.Fac.Sci.Hokkaido Imp.Univ. 3:42 (1944)
- Conservation Code
- Not threatened
- Naturalised Status
- Native to Western Australia
- Name Status
Habit and structure. Thallus with prostrate and assurgent or lateral erect axes to 1–2 mm tall. Erect axes mostly unbranched, with segments 60–70 µm diam. [L:B 3–4] in mature axes, much shorter near the straight apices. Axial cells with 8 or 9 periaxial cells, each producing 2 acropetal initials, the second slightly more lateral than the first. Basipetal filaments 2 per periaxial cell, one from the proximal end of the periaxial cell, the other arising from the second acropetal initial which also cuts off a single distal cell. First acropetal initial cutting off 2 cells, one of which often bears a short 1- or 2-celled spine near the branch apices, although these dehiscent. Acropetal cells often with elongate hairs. Basipetal filaments unbranched, 7–12 cells long, covering the axial cell, lying parallel but with the cells not transversely aligned, 16–18 per segment; cells c. 10 µm diam. [L:B 1.5–2].
Reproduction. Reproductive structures not observed.
Distribution. Widespread in tropical seas.
Habitat. Epilithic in the subtidal.
[After J.M. Huisman in Algae of Australia: Marine Benthic Algae of North-western Australia, 2. Red Algae: 384 (2018)]