Citation: Vent., Jard. Cels 9 (1803).

Derivation: After Dominique Villars, French botanist and physician, 1745-1814.

Synonymy: Not Applicable

Common name: Marsh-flowers.

Description:
Leaf blades mostly (elliptic, not in S.Aust.) ovate to circular or reniform in outline, usually (obtuse, not in S.Aust.) shallowly to deeply cordate at the base, entire or rarely dentate, erect or floating and then strongly dorsiventral and dotted beneath.

Inflorescence an erect to semi-erect open panicle (or, not in S.Aust., a dense head); flowers all with styles of the same length (or, not in S.Aust., heterostylous), pedicellate; corolla yellow (or, not in S.Aust., white); wings keels and hairs of the corolla lobes various.

Capsule mostly opening by 4 apical valves, ripening in the air.

Distribution:  About 14 species in South Africa, Australia, and Laos to Cambodia; 12 species in south-western and south-eastern Australia. (H. I. Aston (1969) Muelleria 2:3-63.)

Biology: No text

Key to Species:

1. Plants stoloniferous; leaf blades usually floating and strongly dorsiventral; inflorescence stems robust and more or less erect; mature capsules on erect pedicels	V. reniformis 1.
1. Plants not stoloniferous; leaf blades usually erect to reclining and not markedly dorsiventral; inflorescence stems lax and spreading; mature capsules on recurved pedicels	V. umbricola 2.

Author: Not yet available