The importance of wetlands to life on Earth is now generally accepted. This is a reference book and identification manual for the vascular plants found in permanent or seasonal fresh water in the subcontinent of India south of the Himalayas. About 660 species are described, and all plantsare illustrated by line drawings showing the diagnostic features. The text is written in a style for both experts and those with only a little botanical training. Scientists and conservationists will be able to identify the plants with accuracy and to build on this information to promoteconservation.