Villarsia
 Villarsia is a genus of aquatic flowering plants in the family Menyanthaceae. The genus is named for the French botanist Dominique Villars (1745–1814). Villarsia are wetland plants with basal leaves. The inflorescence is a branched panicle with numerous flowers. Flowers are five-parted either yellow or white and the petals are adorned with wings.Villarsia is largely restricted to Australia but some species are found in Southeast Asia and V. capensis and others exist in South Africa.