Central stalk (stipe) almost cylindrical and zig-zagged openly branched on one plane. Secondary branches can be as long as main stem and are arranged in an alternate pattern. Zig-zag pegs (branch residues) can be slightly backward facing (retroflex). Branchlets (laterals/ramuli) are comb-like arranged alternately with even branching on one plane. Vesicles round-oval in shape, arising in the place of the first two ramuli on each branch. Holdfast at base is a simple and disc-conical shaped. Medium to dark brown. Up to 1.5 m long (thallus).
This species is usually found in deeper water, but it can be drifting in water or washed ashore after its fronds are detached from rocks by large seas.
Subtidal rocky reefs, to depth of 26 m.
Singapore, Solomon Islands and southern Australia.
Photosynthetic - sunlight
Recorded in Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed