water fringe, marsh-flower
Could be confused with
Southeast Asia, Australia, South Africa.
Species commonly cultivated
Villarsia albiflora F. Muell. (Australia)
V. exaltata (Sims) G. Don (Australia)
V. reniformis R. Br. (Australia)
V. umbricola Aston (Australia)
Annual or perennial. Monoecious or dioecious. Sometimes stoloniferous. Leaves submerged, floating or emergent, in basal rosette; petiole elongate; leaf blade elliptic to reniform; margin entire or crenate. Inflorescence an open panicle or rarely a dense head. Sepals 5; petals 5, fused at base, conspicuous, usually yellow or white, fimbriate (hairy) in throat, undulate along margins. Dispersal by seed.
shallow water of swamps, ponds, and streams; adapts quickly to rising floodwaters by rapid petiole elongation