Definition: Prothalamiumia is a genus of flowering plants in the family Apiaceae. The species are native to South America, but they can also be found in other regions such as North America and Europe. The genus name, "prothalamium", comes from Latin and means "broad leaf", referring to their broad leaves that are large and flat. The species, however, may have various names depending on the specific variety and its characteristics. Prothalamiumia is characterized by