Flat-bladed alga with frequent irregular divided branching. Blades are mostly straight with some pointed, short side branches (laterals). Blade tips are round to fan-shaped. Central area of the branch (axes) and entire lower branches are flattened and covered in tufted filaments. Holdfast at base is felty, matted and root-like (rhizoidal). Dark brown. Up to 20 cm long (thallus).
This is one of several thin, flat-bladed algae that are difficult to distinguish.
Tidal pools and subtidal rocky reefs, to depth of 30 m.
New Zealand and southern Australia.
Photosynthetic - sunlight
Recorded in Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed