General Description

One to few cylindrical stems (stipes) arising from a disc-like (discoid) holdfast. Fronds are compressed, linear with occasional constrictions on edges. Branching occurs mostly equally in two (subdichotomous). Branches split into a fork at ends. Branch tips (apex) are rounded with dark caps. Dark red-brown. Up to 40 cm long (thallus).

Biology

This robust alga turns almost black in colour when dying.

Habitat

Subtidal reef in rough waters, to depth of 21 m.

Reefs

Distribution guide

New Caledonia, 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

40 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