Peucedanum is a genus of flowering plant in the carrot family, Apiaceae. Peucedanum , Herbs perennial. Rootstock short, crown usually bearing remnant leaf sheaths. Stem finely striate, dichotomously branched above. Leaves petiolate; petioles sheathing.Calyx teeth short or obsolete. Petals usually white, occasionally pinkish or purplish, rarely pale yellow, orbicular to obovate, with a narrow inflexed apex. Stylopodium low-conic. Fruit ellipsoid, oblong to suborbicular, dorsally compressed; dorsal ribs filiform, slightly prominent, lateral ribs thickened and narrowly winged, wings closely appressed to one another; vittae 1 to several in each furrow, 2 to several on commissure. Seed face plane or slightly concave. Carpophore bipartite. Between 100 and 200 species: Africa, Asia, Europe; 40 species (33 endemic) in China. A preparative high-speed counter-current chromatography (HSCCC) method for isolation and purification of coumarin compounds from the Chinese medicinal plant Peucedanumdecursivum (Miq.)