Distinctive flattened stalk. Long, zig-zag, flattened central stalk (stipe) with flattened branches arising at point of zig-zag in an alternate pattern on one plane (two-dimensional). Flattened secondary branches (laterals) continue zig-zag pattern on one-plane but less obvious than on main stalk. Blades (ramuli) are flat and tear shaped with short stem at base arising at point of zig-zag on secondary branches also in alternate pattern. Holdfast at base is simple disc. Can have floats (vesicles) that are round to oval in shape. Medium brown. Up to 2 m long (thallus).
This is considered a very distinctive species due to its tear shaped blades, flattened form and strong single plane zig-zag branching pattern. It is one of the deep water species of algae.
Subtidal rocky reefs with rough wave action, at depths between 10 to 44 m.
New Zealand and Australia.
Photosynthetic - sunlight
Recorded in Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed