Cylindrical perennial stalk (stipe), arising from disc-conical to divided holdfast. Lower leaf-like branches (perennial laterals) are irregularly divided. Single stem (stipe) with radial teeth at base appearing zigzagged facing backward (retroflex). Densley branched secondary laterals (upper laterals/ramuli) appear like basal laterals becoming fine and thread-like (filiform) towards top of plant. Clustered branchlets (receptacles) arise on upper laterals attached by a short stem (petiole)and are occasionally branched. Vesicles (when reproductive) are round-oval, attached by a short stem (petiole) and have either no protrusion or a slender-compressed protrusion (mucro). Dark to medium brown. Up to 1 m long (thallus).
This species has been renamed from Sargassum to Phyllotricha.
Subtidal rocky reefs and tidal pools, to depth of 16 m.
Egypt, Jordan, New Caledonia, New Zealand and Australia.
Photosynthetic - sunlight
Recorded in Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed