Long almost straight central stalk (stipe) appearing square-angular in cross section. Secondary branching is open in an alternate pattern on opposite sides of stalk (distichous) on one plane. Lower branches are usually lost leaving zigzagged pegs (residues). Branchlets (laterals) arise in an alternate pattern branching on opposite sides of branch becoming branched more evenly into two towards ends (subdichotomous). Reproductive parts (receptacles) are straight to wavy tapering gradually at both ends. Holdfast at base is a simple and disc-conical shaped. Medium to dark brown. Up to 1 m long (thallus).
This species has separate female and male plants (dioecious) unlike some species in the Cystophora genus.
Subtidal rocky reefs and tidal pools on rough-water coasts, to depth of 8 m.
Photosynthetic - sunlight
Native to Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed