Genus Hypochaeris is a group of common perennial herbs that are found in various regions of the world. There are several synonyms that are used to refer to this genus, including Cat's Ear, Flatweed, and Hypochaeris radicata. These synonyms are commonly used in different places around the world to refer to the same type of plant. The Cat's Ear refers to the shape of the leaves and the Flatweed refers to the flatness of the flower head. The Hypochaeris radicata is the scientific name for the plant and is used by botanists to classify it in the family Asteraceae. These various synonyms help to identify and distinguish this particular genus of plants.