Chelidonium majus, commonly known as greater celandine, is a plant in the family Papaveraceae, native to Europe and Asia. The vernacular name celandine derives from Late Latin celidonia, from earlier Latin chelidonia or chelidonium, and ultimately from Ancient Greek chelidon (“swallow”); hence the common name swallowwort. It has two accepted subspecies: Chelidonium majus subsp. grandiflorum (native to Siberia, China, and Korea) and Chelidonium majus subsp. majus (native to Europe, western Asia, and a small area of North Africa).