Flattened leathery central stalk (stipe) with branches arising in an alternate pattern on one plane (appearing to blend together), secondary branches (laterals) also arranged in alternate pattern on one plane with narrowed sections at base appearing leaf-like (narrow at base oval-oblong at end) at branch ends. Often distinctly spotted (conceptacles) on surface. Holdfast at base is a simple and disc-cone shaped. Medium to dark brown. Up to 1 m long (thallus).
This alga often appears broken or damaged because of attacks from snails and other herbivores.
Subtidal rocky reef, to depths from 2 to 40 m.
Photosynthetic - sunlight
Native to Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed