Linaria is a genus of 150 species of herbaceous annuals and perennials and the largest genus in the Antirrhineae tribe of the plantain family Plantaginaceae. The members of this genus are known in English as toadflax, a name shared with several related genera. The scientific name Linaria means Resembling linum (flax), which the foliage of some species superficially resembles. Linaria has been used as a medicinal herb for the treatment of many illnesses and conditions, including hepatitis, hemorrhoids, scrofula, and scurvy. It has been used as an astringent, an emollient and a laxative.