Biodiversity of Sri Lanka

An indigenous aquatic herb  occurs in stagnant, shallow most probably temporary waters, paddy fields, ponds and marshlands from sea level...

An indigenous aquatic herb with submerged and floating leaves occurs in lakes, ponds and tanks from sea level to about 1300 m a.s.l, ...

Locally common endemic aquatic herb found in shallow or deep ponds and rivulets with stagnant or fast flowing water in higher elevations...

An endemic aquatic herb with submerged leaves, distributed in slow or fast flowing streams and rivers in Kalutara, Rathnapura and Galle ...