Multiple stems (stipes) arising from base with dense, irregular secondary branching. Secondary laterals are frequent, short and spreading and often more slender than main branches. Holdfast root-like (rhizoidal) from prostrate parts. Dark brown-red. Up to 15 cm long (thallus).
This species usually grows as an epiphyte on seagrass. Its size is variable and can change due to ecological conditions. It is the most common species in its genus Polysiphonia along the southern Australian coastline.
Shallow subtidal areas, sheltered to rough waters, to depth of 12 m.
Fuegia, New Zealand and Australia.
Photosynthetic - sunlight
Recorded in Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed