Aquatic Angiosperms of India

Some of the salient features pertaining to the taxonomy of a few interesting aquatic angiosperms and their distribution, variability of fruits and seeds, their economic importance, floral biology, anatomy, embryology and cytology are presented here. The varied and diverse pattern of distribution of some Indian aquatic taxa is described with examples. Certain unique embryological features noticed in some aquatic plants are pointed out. Though the data on the cytplogy of Indian aquatic angiosperms is raher meagre, it is evident that from the evolutionary point of view, polyploidy has played an important role in the differentiation of races, varieties and species. The nomenclature of Nymphoides Hill and Necharmndra Planch., is discussed. Finally, the ample scope present for further work for a better understanding of these plants is emphasised.