Brasenia schreberi J.F.Gmel.

Water-shield

Syst. Nat. 2: 853 (1791) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: vulnerable (v); listed in Flora and Fauna Guarantee Act 1988

Stems 3–10 mm diam., covered in mucilage. Leaves elliptic, 2.5–9 cm long, 1.5–6 cm wide; petioles to 30 cm long or more (bringing leaf to water surface); young leaves inrolled longitudinally. Flowers long-pedicellate (bringing flower to water surface); perianth segments 9–18 mm long, dark reddish-black or purplish; stamens 12–37, filaments reaching 1 cm long (extending after pollination of stigma); carpels 6–16, ovules usually 2 per carpel. Fruit beaked. Flowers Oct.–Feb.

NIS, VRiv. Also Qld (?now extinct), NSW. Tropical parts of Africa, Asia and America. Known in recent times only from shallow lagoons of the Goulburn River and tributaries near Nagambie, but there locally common. Early records from the lower Ovens and Mitta Mitta Rivers suggest a former wider range.

Plants need to remain submerged (except for floating leaves and flowers) in freshwater year-round. The flowers rise twice to the surface, firstly to be pollinated, then a day later to release pollen.

Source: Entwisle, T.J. (1996). Cabombaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne.
Updated by: Neville Walsh, 2016-09-06
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Nymphaeanae
order Nymphaeales
family Cabombaceae
genus Brasenia
Higher taxa

Victoria

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

State distribution

Distribution map
State
Queensland
New South Wales
Victoria