General Description

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).

Biology

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.

Habitat

Shallow subtidal areas, sheltered to rough waters, to depth of 12 m.

Reefs

Seagrass meadows

Distribution guide

Fuegia, New Zealand and Australia.

Species Group

Seaweeds and seagrasses › Red algae

Depth

Shallow (1-30 m)

Water Column

On or near sea floor

Max Size

15 cm

Diet

Photosynthetic - sunlight

Commercial Species

No

Global Dispersal

Recorded in Australia

Identify

• Seaweeds and seagrasses

Conservation Status

• DSE Advisory List : Not listed
• EPBC Act 1999 : Not listed
• IUCN Red List : Not listed