This paper deals with the pollen morphology of 22 species of the aquatic plants belonging to 18 genera and 13 families. 11 species of them are first time reported: Potamogeton maackianus Benn; P. malaianus Miq, Myriophyllum spicatum L., Zizania latifolia Turcz., Sagittaria sagittifolia L. var. longilaba Turcz., Polygonum hydropiper L., Ranunculus sceleratus L., Cardamine lyrata Bunge, Cyperus difformis L., Eleocharis pellucida PresI and Scripus mucronatus Diels. All pollen grains were observed under light microscope (LM) but 12 species among them were also examined under scanning electronic microscope (SEM). The environmental conditions and community structure of aquatic vegetation in the lake are briefly discussed.