Health Bulletin No. 24 Malaria Bureau No. 11 Hand Book of Common Water and Marsh Plants of India and Burma 1936

Cell—the structural unit in the formation of a plant; one of the cavities of an ovary or of an anther. [...] Diffuse—widely spreading Disciform—depressed and circular like a disc or point Disc or Disk—art enlargement of the receptacle of a flower in the form of a cup or cushion ring or glands. [...] Pericarp—tbe portion of the ftuit formed of the walls of the cr aty and whatever adheres to it inclusive of and outside the seed. [...] Stigma—that part of the pistil which is specially adopted lot the reception of the pollen for the fettilization of the ovule. [...] Growth of vegetation in surface water is dependent on various factors such as the cheitical and physical nature of the water; the nature of the bottoms whether muddy or silt-laden; the climatic environment including meteorological conditions of a locality; etaphic and geological nature of the substratum and last but not the least on the' biological nature of the water.