In North America, do not confuse with very-similar-named (and very-similar-looking!) without-adjective celandine poppy  Stylophorum diphyllum.   Although members of separate genera, both are part of poppy  family Papaveraceae.

And do not confuse either with very-similar-named lesser celandine  Ficaria verna.   Although together the three species are members of two separate families, all three are part of barberry/​buttercup/​poppy  order Ranunculales.

Native to most of Europe, and temperate regions of northern Africa and western Asia.   Invasive > 🇨🇦 Canada, 🇺🇸 USA Invasive > report it! Invasive > 🇺🇸 USA Invasive > Michigan

Uses by native peoples
(Ethnobotany database)

Learn more about greater celandine poppy Chelidonium majus

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