Lousewort is a common name for plants in the genus Pedicularis, which belong to the family Orobanchaceae. These flowering plants are typically found in temperate regions and are known for their unique, often colorful blooms. Louseworts are hemiparasitic, meaning they can photosynthesize but also derive some nutrients from the roots of neighboring plants. The name "lousewort" is believed to originate from the plant's historical use in folk medicine, where it was thought to treat lice infestations. Louseworts are often found in meadows, grasslands, and alpine environments, contributing to the biodiversity of these ecosystems.