Celandine (lat. Chelidonium is an oligotypic genus of dicotyledonous plants in the Poppy family (Papaveraceae). The taxonomic name of the genus was suggested by the Swedish taxonomist Carl Linnaeus.
As a rule, in the genus Celandine there is only one species of Chelidonium majus (Celandine large), but in some sources there is also at least one more species of Chelidonium asiaticum, previously considered a subspecies of Chelidonium majus. Erect perennial herbaceous plants with a rounded stem that secrete milky juice on the cut. The rhizome is brown. Leaves are pointed, ovate, can be stem and basal. Basal leaves form from obovate-oblong to lanceolate, collected in a rosette; stem leaves are placed in turn. Flowers are numerous, four-petalled, yellow, collected in an inflorescence-umbrella. The fruit is a bare box of narrowly cylindrical shape, bearing numerous small shiny seeds.