The Genus Descurainia is a group of flowering plants that belongs to the family Brassicaceae. Commonly known as tansy mustard, these plants are characterized by their delicate, lacy leaves and tiny yellow flowers. While the name Descurainia is the accepted scientific name for this group of plants, there are several synonyms that have been used in the past. These include Sophia, Pinnatifida, and Sisymbrium. These synonyms were used due to inconsistencies in the classification of plants in the past, but with the advancement of taxonomy, the name Descurainia is now the standard name used to refer to this particular group of flowering plants.