Biodiversity of Sri Lanka

An introduced aquatic herb with floating leaves, native to the Africa . Cultivated and also escaped and naturalized in ponds and tanks. F...

Olu is a very common indigenous aquatic herb of ponds and tanks, particularly in the dry lowlands. Flowering throughout the year and co...

An indigenous aquatic herb with floating leaves common in ponds and tanks of lowlands, particularly in dry zone and often cultivated in o...