PORT PHILLIP BAY


Red Seaweed 

Gelidium australe

View scientific description and taxonomy

Scientific Details

Superficially similar to Pterocladia capillacea which is a less slender species with wider axes.

Main information sources:
Womersley, H.B.S., (1984-2003). The Marine Benthic Flora of Southern Australia. Part 1-3d. Govt. Printer, South Australia.
Baldock, R.N. 2010. Algae Revealed. South Australian State Herbarium. Website.
AlgaeBase. Website.

Taxonomy

Phylum:
Rhodophyta
Subphylum:
Eurhodophytina
Class:
Florideophyceae
Subclass:
Rhodymeniophycidae
Order:
Gelidiales
Family:
Gelidiaceae
Genus:
Gelidium
Species:
australe

General Description

Fine, slender and cartilaginous flattened branches with even finer secondary branches (laterals) that are long, densely branched, and evenly divided in opposite pairs (bipinnate). Slender root-like (haptera) holdfast. Medium to dark red-brown. Up to 25 cm long (thallus).

Biology

This species is most common at reef in the lowest intertidal area. It can appear almost green in intertidal areas due to increased exposure to light that bleaches its colour.

Habitat

Intertidal and subtidal reefs, to depth of 13 m.

Reefs

Coastal shores

Distribution guide

Korea and Australia.

Species Group

Seaweeds and seagrasses Red algae

Depth

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

Water Column

On or near sea floor

Max Size

25 cm

Diet

Photosynthetic - sunlight

Commercial Species

No

Global Dispersal

Recorded in Australia

Identify

Conservation Status

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

Author

article author Pocklington, Jacqui

Jacqui Pocklington is a Research Associate with expertise in algal taxonomy.

citation

Cite this page as:
Pocklington, Jacqui, 2011, Red Seaweed, Gelidium australe, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 21 Oct 2017, http://portphillipmarinelife.net.au:8098/species/11330

Text: creative commons cc by licence