Spirodela polyrhiza (L.) Schleid.

Linnaea 13: 392 (1839) APNI

Taxonomic status:Accepted

Occurrence status:Extinct

Establishment means:Native

Threat status:Victoria: extinct (x)

Roots (5–)10–13(–18). Thallus elliptic to obovate, (3–)5–10 mm long, 5–10 mm wide (length to width ratio 1–1.5), with 7–16 veins; dorsal surface yellow-green; ventral surface usually purplish.

Also NT, Qld, NSW. Alsmost  cosmopolitan distribution in temperate to tropical regions. Very rare in Victoria, only known from 2 historical records from lagoons on the Upper Murray River near Towong and Biggara.

Created by: Andre Messina, 2014-08-11
Updated by: Val Stajsic, 2018-03-28
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Alismatales
family Araceae
genus Spirodela
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Spirodela polyrhiza in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Spirodela polyrhiza in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain extinct native
Northern Inland Slopes extinct native

State distribution

Distribution map
Western Australia
Northern Territory
New South Wales