General Description

One to several flattened stems (stipes) arising from holdfast. Branching in a tree-like (arborescent) pattern mostly on one plane. Secondary branches are ribbon-like with thickened vein-like midlines. Numerous secondary branches usually distributed evenly in groups of two or more. Lateral blades have fan-shaped (flabellate) ends. Obvious pale circular lumps (conceptacles) on blade surface when reproductive. Pink to dull red. Up to 23 cm long (thallus).

Biology

This coralline alga has an obvious pale crusting on its surface that gives it a coral-like appearance. Pycnogonids such as Ammothea species and other invertebrates associate with this alga.

Habitat

Tidal pools, subtidal reefs, sheltered and open coasts, to depth of 48 m.

Reefs

Coastal shores

Distribution guide

Worldwide.

Species Group

Seaweeds and seagrasses › Red algae

Depth

Shore (0-1 m)
Shallow (1-30 m)
Deep ( > 30 m)

Water Column

On or near sea floor

Max Size

23 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