Nabalus is a genus of flowering plants that belongs to the Asteraceae family. It comprises about 20 species of herbs, commonly known as rattlesnake-root or lion's foot. Although there are not many synonyms for the word nabalus, the derogatory term "dogfennel" is often used to refer to some species within the genus. Other synonyms that have been used for nabalus include Prenanthes, Helminthia, and Siphium. The plants are native to North America and can be found in a variety of habitats such as woodlands, fields, and meadows. They are valued for their medicinal properties and are commonly used in traditional herbal medicine.