The aquatic and wetland plants represent great morphological diversity and fill various ecological niches. This plasticity also leads to a great diversity of phenotypes, which may be potentially available from the same genotype.

The family Hydrocharitaceae provides several cases of evolutionary adaptation to diverse habitats. In India, which is one of the 12 megabiodiversity centres of the world, the family Hydrocharitaceae is represented by 9 genera and 15 species. The present book ‘Aquatic Macrophytes: Hydrocharitaceae in India’ is an attempt to analyse the taxonomic status of the Indian taxa taking into account various aspects. Chapters on morphology, biogeography, pollen morphology, floral biology, etc. will be helpful for future workers in tracing origin and segregation of the family.