Ranunculus flammula is commonly known as Lesser spearwort, a species of flowering plant belonging to the buttercup family. It is known by various other names like creeping spearwort, bog buttercup, and lesser water chestnut. The plant can be seen growing in a variety of habitats like wetlands, ponds, marshes, and streams. It has beautiful bright yellow flowers that are small and delicate. The leaves are narrow, and shiny. Lesser spearwort has medicinal properties and has been used to treat various ailments in traditional medicine. Other synonyms for the plant include Batrachium flammula, Ranunculus reptans, and Batrachium reptans.