Hydnoracea is a family of parasitic plants that grow on the roots of other plants, and are known for their unusual appearance. The common name for this family of plants is "jackal-food". However, there are several synonyms used for the word hydnoracea, including Hydnoraceae, Hydnoraceus, and Hydnorales. These synonyms are often used interchangeably to refer to the same category of plants. It is thought that there are only a few species of hydnoracea in existence, with most of them being found in South Africa, but their unique adaptation to survival makes them an interesting topic for botanists and nature enthusiasts.