Nymphaea mexicana Zucc.

Yellow Waterlily

Abh. Math.-Phys. Cl. Königl. Akad. Wiss. 1: 365 (1832) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Rhizomes vertical, to c. 30 cm long, c. 4 cm thick, with long horizontal stolons produced at apex; new plants produced at nodes of stolons. Leaves suborbicular with a radial sinus, to c. 25 cm diam., dark green and brown-blotched above, crimson-brown with blackish dots below, margins obscurely and finely sinuate. Flowers to c. 12 cm diam., borne up to 12 cm above the water on rigid pedicels, closing at night; sepals 4, green; petals c. 25, elliptic, acute, bright yellow, passing into petaloid stamens; stamens c. 50, yellow; ovary lobes large with stigmatic surface on lower 60%. Berry ovoid, c. 2.5 cm long; seeds (rarely formed in Australia) many, c. 5 mm long or more. Flowers mostly summer.

*VRiv. Also naturalised Qld, NSW. Native of Mexico. So far recorded as naturalised in Victoria only along an anabranch of the Goulburn River near Nagambie, where the infestation is expanding rapidly, and near Glenthompson. It is potentially a very troublesome weed that can block waterways and eradication has proved difficult.

The taxonomy of the species is under review and the above description includes hybrids derived from N. mexicana.

Source: Jeanes, J.A. (1996). Nymphaeaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne.
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Nymphaeanae
order Nymphaeales
family Nymphaeaceae
genus Nymphaea
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Nymphaea mexicana in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Nymphaea mexicana in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Riverina present introduced

State distribution

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