PORT PHILLIP BAY


Paddle Weed 

Halophila australis

View scientific description and taxonomy

Scientific Details

Very similar to Halophila ovalis which can be distinguished by having a more rounded leaf, less cross veins on the leaf surface, and flowers arising on the runners.

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:
Tracheophyta
Subphylum:
Euphyllophytina
Superclass:
Angiospermae
Class:
Liliopsida
Subclass:
Alismatidae
Order:
Alismatales
Family:
Hydrocharitaceae
Genus:
Halophila
Species:
australis

General Description

Paddle-shaped leaves occurring often in pairs with obvious cross-veins on surface arise from delicate stems (petioles). Stem arises from buried runner (stolon). Flowers arise on branches between leaf pairs. Green to almost transparent leaves with white stem. Up to 7 cm (leaf) long.

Biology

This seaweed can form large beds across the sea floor.

Habitat

Sandy and muddy substrates in sheltered embayments and estuaries, to depth of 23 m.

Seagrass meadows

Soft substrates

Distribution guide

Southern Australia.

Species Group

Seaweeds and seagrasses Seagrasses

Depth

Shallow (1-30 m)

Water Column

On or near sea floor

Max Size

7 cm

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, Paddle Weed, Halophila australis, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 18 Dec 2017, http://portphillipmarinelife.net.au:8098/species/11338

Text: creative commons cc by licence