Stylophorum diphyllum (Michx.) Nutt., Gen. N. Amer. Pl. 2: 7 7 1818. (Syn: Chelidonium diphyllum Michx. (Unresolved); Stylophorum ohiense Spreng.); 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 celandine-poppy is named for the greater celandine (Chelidonium majus), […]