This plant is found in moist open areas and grows even in water. It grows among the smartweed in our wetlands. The stems lie flat with branches up to a foot or more rising vertically from them. The opposite, lanceolate leaves are toothed at the edges near the tip. The tiny flowers are arrayed on a flower head at the top of a long stalk. Each flower is whitish-pink and has four petals and a yellow or pink center.