Senegal tea plant
Species commonly cultivated
Gymnocoronis spilanthoides DC. (Mexico to Argentina)
Australia, New Zealand, India
Gymnocoronis spilanthoides is a declared noxious weed in Australia and under surveillance in New Zealand. It is also recorded as weedy in Argentina and India.
Perennial. Stems creeping, ascending or erect, inflated when submersed or floating. Leaves opposite, petiolate; leaf blade lanceolate to ovate; margin serrate when emergent. Inflorescence of several heads in an apical cyme. Florets white, 100-150. Dispersal by seed and stem fragments.
still waters and wet ground of lakes, rivers, and streams