- Conservation Code
- Not threatened
- Naturalised Status
- Native to Western Australia
- Name Status
- Current
Scientific Description
Habit and structure. Thallus erect, to 10 mm tall, attached by rhizoidal filaments from lower cells, with 1–3 percurrent primary axes arising near the base. Primary axes polysiphonous, ecorticate, with 6 pericentral cells, these slightly offset in successive segments; branching distichous with pseudolaterals arising every 2 segments. Polysiphonous segments to 80 µm diam. near the thallus apex [L:B c. 1], broadening to 220 µm near the base [L:B c. 0.6]. Pseudolateral branches to 1.2 mm long, curved towards the apex, monosiphonous except for basal and often suprabasal polysiphonous segments (these with 4 pericentral cells), dichotomously divided every 2 cells; lower cells 50–65 µm diam., tapering gradually to outer cells 35–40 µm; apical cells 18–25 µm diam., pointed but without a spine.
Reproduction. Reproductive structures not seen.
Distribution. Widespread in tropical seas; epiphytic and epilithic in the subtidal.
[After J.M. Huisman in Algae of Australia: Marine Benthic Algae of North-western Australia, 2. Red Algae: 435 (2018)]