Dollarweed is an aquatic, or water-loving, perennial that thrives in warm, temperate regions. Freely branching stems creep and spread by rooting at the nodes. Leaves are bright green, round, fleshy and have slightly wavy margins. They appear to be centrally balanced on tall, upright stems. In lawns, flowers of dollarweed seldom have a chance to develop. They are tiny, with five star-shaped white petals. Each flower is borne on an umbrella-shaped cluster. Dollarweed receives its name from the similarity in leaf shape to the silver dollar.