Stylophorum diphyllum
（重定向自Celandine poppy）
Stylophorum diphyllum (celandine-poppy, wood poppy, poppywort) is a herbaceous perennial native to moist woodland in eastern North America, valued for its yellow flowers. The common name is derived from greater celandine (Chelidonium majus), a closely related European plant with similarly shaped leaves and similarly coloured and shaped flowers.