Chandmala or Water snowflake (nymphoides indica, family: menyanthaceae) is a fast growing floating aquatic plant. The root of the plant arises from the clay. This mother-plant expands through the roots that grow from stem-nodes. And by this the floating plant can make its length up to 3 meters. They seem to be a colony from a distance. In the colonies, when they begin to bloom, they look like stars. In Bangla, the plant is called Chandmala or Chondromala (group of stars) for this reason.
Heart-shaped floating leaves are simple, shinny green, wavy-edged, 3-10 cm wide; petioled, almost 4 cm long. Flowers are small, white in color with yellow mark at the centre. Petals are quite exceptional, 5-7, with fringe. Flower blooms in rainy season to late outumn. They are short-lived. They can survive only a day. Fruit is globose with many bright yellow seeds. The propagation of the plant is caused by seeds.