Nymphoides

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Leaf-blades ovate to circular (in Victoria), usually strongly cordate at the base, sometimes semi-erect but usually floating and then strongly dorsiventral with upper surface glossy green or sometimes mottled with maroon, lower surface dotted and pale cream to deep purple. Flowers paired along inflorescence axis or condensed to a tight cluster subtended by several leaves at a stem node (or, not in Victoria, a unilateral fascicle arising at the junction of a long petiole-like stem and the true petiole of a subtending leaf), homostylous or heterostylous, long-pedicelled; corolla yellow (in Victoria), or white, orange, mauve or pink. Capsule ellipsoid, mostly indehiscent and ripening underwater on recurved pedicels, sometimes dehiscing by valves when the fruits are aerial.

About 38 species, in most tropical and temperate parts of the world; c. 19 species in Australia.

Source: Aston, H.I. (1999). Menyanthaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 4, Cornaceae to Asteraceae. Inkata Press, Melbourne.
 
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