Genus Isatis is a scientific classification for various species of the plant family Brassicaceae. Commonly known by its scientific name, Isatis, this genus has various synonyms that refer to different plants. Examples of synonyms for Genus Isatis include dyers woad, woad, pastel plants, and glastum, among others. These synonyms are derived from the different species of Isatis that have been used for various purposes, such as producing a blue coloring agent for textiles, and medicinal purposes. Although the plants classified under Genus Isatis have different names, they share similar characteristics, such as a biennial or perennial growth habit, and the production of yellow flowers.