Callistephus /kæˈlɪstᵻfəs/ is a monotypic genus of flowering plants in the aster family, Asteraceae, containing the single species Callistephus chinensis. Its common names include China aster and annual aster. It is native to China and Korea. and it is cultivated worldwide as an ornamental plant. This plant is a naturalized species in some areas outside of its native range (Indochina, Europe, North America, Australia, New Zealand, etc.).