IMCRA Regions: Abrolhos Islands, Central West Coast, Leeuwin-Naturaliste, Ningaloo, Pilbara (nearshore), Pilbara (offshore).
Local Government Areas (LGAs): Ashburton, Cockburn, Dandaragan, Exmouth, Greater Geraldton, Karratha.
Habit and structure. Thallus erect, to 4–5 cm tall, with numerous cylindrical axes arising from the base, attached by non-septate rhizoids. Axes to 3 mm diam., with basal annular constrictions. Lateral branches formed from protoplasts of the parent branch, these rounding up and forming irregularly radial protrusions along the parent branch which grow to a length of 1–2 cm. All branches with rounded apices.
Distribution. A common tropical species. In W.A. south to Rottnest Island.
Habitat. Epilithic in the intertidal and subtidal.
[After Huisman & Leliaert, Algae of Australia: Mar. Benthic Algae of North-western Australia, 1. Green and Brown Algae 64 (2015)]
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Western Australian Herbarium (1998–). FloraBase—the Western Australian Flora. Department of Biodiversity, Conservation and Attractions. https://florabase.dpaw.wa.gov.au/