Citation: Séguier, Pl. Veron. 3:121 (1754).

Derivation: From nymphaea, water-lilies, and the Greek ending -odes, meaning resembling or like.

Synonymy: Limnanthemum S. Gmelin, Novi Comment. Acac. Sci. Imp. Petropol. 14:527 (1770). (A. Raynal (1974) Adansonia 14:405-58; H. I. Aston (1982) Muelleria 5:35-51; H. I. Aston (1984) Muelleria 5:265-270; H. I. Aston in G. J. Leach & P. L. Osborne (1985) Freshwater Plants of Papua New Guinea; H. I. Aston (1986, in press) Muelleria 6).

Common name: None

Description:
Leaf blades ovate to orbicular (or, not in S.Aust., elliptic, triangular to sagittate) in outline, usually strongly cordate at the base, entire or crenate, semi-erect or usually floating and then strongly dorsiventral, glossy above, dotted and either pale or purplish beneath.

Inflorescence bearing flowers in pairs along its axis or condensed to a tight cluster of flowers subtended by several leaves at a stem node (or, not in S.Aust., a unilateral fascicle arising at the junction of a long petiole-like stem and the true petiole of a solitary subtending leaf); flowers heterostylous, long-pedicelled; corolla yellow in S.Aust. (white, orange or pink elsewhere); wings keels and hairs of the corolla lobes various.

Capsule mostly indehiscent and ripening underwater on recurved pedicels, sometimes dehiscing by valves when the fruits are aerial.

Distribution:  About 32 species in most tropical and temperate parts of the world; about 16 species in Australia.

Biology: No text

Key to Species:

1. Leaves crenate; corolla lobes with a laciniate longitudinal keel on the adaxial surface; seed compressed-ellipsoid, non-carunculate	N. crenata 1.
1. Leaves entire; corolla lobes not keeled; seed compressed-globular, carunculate	N. geminata 2.

Author: Not yet available