NechamandraNechamandra is a monotypic genus of an aquatic plant family Hydrocharitaceae. The sole species is Nechamandra alternifolia. It is found in slow moving fresh water.Distribution and habitatThis is a rare plant in lakes and ponds. It is known from Asian fresh waters of Sudan, Socotra, Sri Lanka, India, Nepal, Bangladesh, China, Myanmar, Thailand, and Vietnam.Chromosome numberChromosome numbers of 2n = 14 is reported from India and Myanmar.