Bergia cuddalorensis S. Soosairaj, sp. nov. (Elatinaceae), a new species from Tamil Nadu, India

Bergia cuddalorensis S. Soosairaj, sp. nov. a new species from Tamil Nadu, India, has some distinct characteristics that set it apart from other related species like B. trimera Fisch. & C.A. Mey., B. ammannioides Roxb., and B. suffruticosa (Delile) Fenzl. It can be distinguished by the number of stamens, the shape of sepals, leaves and stipules as well as trichome features. A key to the Indian species of Bergia L. is provided.