PORT PHILLIP BAY


Brown Seaweed 

Cladostephus spongiosus

View scientific description and taxonomy

Scientific Details

May be confused with Diplocladia patersonis which isn't denuded at base, the branchlets don't occur in sets, the branchlets are themselves branched, and it has a rhizoidal holdfast rather than a crustose holdfast.

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:
Ochrophyta
Subphylum:
Phaeista
Superclass:
Fucistia
Class:
Phaeophyceae
Order:
Sphacelariales
Family:
Cladostephaceae
Genus:
Cladostephus
Species:
spongiosus

General Description

Cylindrical appearing branches made up of few to several branching stems (stipes) branching usually equally in two, with tightly packed whorled branchlets (laterals) occurring in distinct sets. Often denuded lower on the branch. Holdfast at base is crustose. Medium Brown. Up to about 20 cm long (thallus).

Biology

Under magnification, the branches of this species appear like a bottle brush.

Habitat

Lower intertidal rocky reefs and tidal pools, to depth of 6 m.

Reefs

Coastal shores

Distribution guide

Worldwide.

Species Group

Seaweeds and seagrasses Brown algae

Depth

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

Water Column

On or near sea floor

Max Size

20 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, Brown Seaweed, Cladostephus spongiosus, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 29 Mar 2017, http://portphillipmarinelife.net.au:8098/species/11336

Text: creative commons cc by licence