PORT PHILLIP BAY


Brown Seaweed 

Carpoglossum confluens

View scientific description and taxonomy

Scientific Details

Superficially similar to Cystophora platylobium in its leaf-like sub branches. Somewhat similar in appearance to Dictyopteris muelleri but lacks mid-rib, has more branch divisions and is much thicker.

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:
Fucales
Family:
Sargassaceae
Genus:
Carpoglossum
Species:
confluens

General Description

Flattened leathery central stalk (stipe) with branches arising in an alternate pattern on one plane (appearing to blend together), secondary branches (laterals) also arranged in alternate pattern on one plane with narrowed sections at base appearing leaf-like (narrow at base oval-oblong at end) at branch ends. Often distinctly spotted (conceptacles) on surface. Holdfast at base is a simple and disc-cone shaped. Medium to dark brown. Up to 1 m long (thallus).

Biology

This alga often appears broken or damaged because of attacks from snails and other herbivores.

Habitat

Subtidal rocky reef, to depths from 2 to 40 m.

Reefs

Distribution guide

South-eastern Australia.

Species Group

Seaweeds and seagrasses Brown algae

Depth

Shallow (1-30 m)

Water Column

On or near sea floor

Max Size

1 m

Diet

Photosynthetic - sunlight

Commercial Species

No

Global Dispersal

Native to 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, Carpoglossum confluens, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 21 Jul 2017, http://portphillipmarinelife.net.au:8098/species/11142

Text: creative commons cc by licence