PORT PHILLIP BAY


Brown Seaweed 

Petalonia fascia

View scientific description and taxonomy

Scientific Details

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:
Ectocarpales
Family:
Scytosiphonaceae
Genus:
Petalonia
Species:
fascia

General Description

One to several flattened (leaf-like) unbranched fronds, either tapering at both ends or strap-like in shape, wedge-shaped near holdfast. Holdfast at base is small disc. Medium to dark brown. Up to 30 cm long (thallus).

Biology

A seaweed that often occurs in seasonal bursts, as it has a crustose life stage before developing into the adult plant. It can cover large areas and is in shallow waters where it often grows on seagrass.

Habitat

Intertidal areas, tidal pools and shallow subtidal rocky reefs, to depth of 2 m.

Reefs

Coastal shores

Seagrass meadows

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

30 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, Petalonia fascia, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 29 Mar 2017, http://portphillipmarinelife.net.au:8098/species/11307

Text: creative commons cc by licence