FUMARIACEAE. An order of herbs, now included, by Bentham and Hooker, as a tribe of Papaveraceae. Flowers irregular; sepals two, deciduous; petals four, in two usually very dissimialr pairs, cruciate, irregular, one or both of the outer pairs often saccate or spurred, and the two inner frequently cohering at the apex so as to include the anthers and stigma. Leaves alternate, usually divided, exstipulat. Stems brittle. The species possess slight bitterness and acridity,and are natives of the temperate and warm regions of the Northern hemisphere and Southern Africa. Five of the seven genera are: Adlumia, Corydalis, Dicentra, Fumaria, and Hypecium. There are about 100 species.