Egeria densa Planch.

Dense Waterweed

Ann. Sci. Nat., ser. 3, 11: 80 (1849) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

See generic description for diagnostic features.

*GipP, *HNF, *HSF, *MuF, *OtR, *VRiv, *VVP. Also Qld, NSW. In Florida (USA) it has become a nuisance to navigation in some inland waterways (Sainty & Jacobs 1981). It occurs in shallow lakes, ponds and slow-flowing streams containing high nutrient levels. Recorded rarely in Victoria (e.g. Shepparton, Ringwood, Royal Botanic Gardens Melbourne) and populations not long-persisting.

Source: Conn, B.J. (1994). Hydrocharitaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne.
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Alismatales
genus Egeria
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Egeria densa in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Egeria densa in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present naturalised
Victorian Riverina present naturalised
Murray Fans present naturalised
Gippsland Plain present naturalised
Highlands-Southern Fall present naturalised
Highlands-Northern Fall present naturalised
Otway Ranges present introduced

State distribution

Distribution map
Western Australia
South Australia
New South Wales
Australian Capital Territory